1 Understanding Trade Finance: Theory and Evidence from Transaction-level Data JaeBin Ahn y International Monetary Fund PRELIMINARY DRAFT Novemer, 2014 Astract This paper provides a portrait of the pattern of payment methods in international trade at the national level, y employing the universe of Colomian and Chilean import transactions data. The data reveal a striking predominance of the post-shipment payment system: the post-shipment term accounts for 8090 percent of total import transactions in Colomia and Chile. Further, a sustantial level of variation across source countries is mostly explained y Asian countries with which the post-shipment payment term is used signi cantly less y around 1020 percentage points. Alternative model of trade nance that features the self-liquidating and recourse nature of account receivales nancing is introduced to explain the oserved empirical patterns of payment methods. A susequent econometric analysis strongly supports the validity of the model. JEL classi cation: F1, F4, G2, G3 This paper is a sustantially revised version of the working paper titled A Theory of Domestic and International Trade Finance. The views expressed in this paper are those of the author and should not e attriuted to the International Monetary Fund, its Executive Board, or its management. y Research Department, International Monetary Fund, th street NW, Washington, DC
2 Trade Finance 2 1. Introduction Exchange takes time. For example, when a seller receives a purchase order that stipulates payment after delivery, the seller has to produce and ship a product efore the uyer pays. This requires nancing over short horizons ecause the seller may need to orrow working capital to complete the order or may purchase credit insurance to protect against counterparty defaults. That is the essence of trade nance. It is often descried as the lifeline of usiness transactions ecause more than 90 percent of transactions involves some form of credit, insurance or guarantee (International Trade Center, 2009). Despite its importance in international trade, however, it was not until the recent great trade collapse that trade nance came to the attention of academic researchers. 1 This study aims to roaden understanding of trade nance, in particular, the pattern of payment methods pre-shipment payment, post-shipment payment, or letter of credit. One of the most fundamental questions in trade nance is what determines the pattern of payment methods ecause it essentially tells who is responsile for nancing transactions, and thus who would most need liquidity support. This is particularly relevant in developing countries where the lack of trade nance supply is often cited as the main hindrance to trade, or in times of nancial crisis when the overall drying up of trade nance supply could lead to the gloal collapse in trade. The lack of understanding on the topic thus far stems largely from the unavailaility of su ciently detailed data. The main contriutions of this paper are two folds empirical and theoretical. First, I provide a portrait of the pattern of payment methods in international trade at the national level, y exploring the universe of Colomian and Chilean import transactions data, and document three main stylized facts. 2 Second, I develop a theoretical model that can explain 1 The great trade collapse has een the motivation for a variety of theoretical and empirical exercises seeking to account for the much more dramatic collapse in trade relative to GDP. The role of trade nance in the great trade collapse has een discussed in Ahn (2013), Ahn, Amiti, and Weinstein (2011), Amiti and Weinstein (2011), Auoin (2009), Berman, de Sousa, Martin, and Mayer (2012), Berman and Martin (2012), Bricongne, Fontagné, Gaulier, Taglioni, and Vicard (2012), Chor and Manova (2012), Niepmann and Schmidt-Eisenlohr (2013), and Paravisini, Rappoport, Schnal, and Wolfenzon (forthcoming). Other hypotheses on the great trade collapse includes product composition e ects (Levchenko, Lewis, and Tesar, 2010), inventory adjustment (Alessandria, Kaoski, and Midrigan, 2010), vertical integration e ects (Bems, Johnson, and Yi, 2010), and other demand factors (Eaton, Kortum, Neiman, and Romalis, 2011). 2 Given that the choice of payment methods is made etween the importer and the exporter, it is critical to consider the characteristics of oth sides involved in the transaction, which requires importer- and/or exporter-level transaction data with payment method information. The unique feature of these datasets which identify the payment method used in each transaction, in addition to the fact that the majority of importers or exporters transact with multiple trading partners from di erent countries enhances the quality of econometric analysis ecause it allows for exploiting within- rm variations, e ectively controlling for rm-level characteristics such as nonpayment risks or nancing conditions (Section 2). Rare exceptions with uyer-seller matched transactions data include Antras and Foley (2011) using data from a single U.S. food exporter and Klapper, Laeven, and Rajan (2012) using data from a factoring company. Other sources for the information on patterns of payment methods include the ank-level trade nance survey, which collect rst-hand information from commercial anks on market conditions for trade nance (Asmundson et al., 2011; IMF- BAFT, 2009; ICC, 2010).
3 Trade Finance 3 these empirical ndings, and take the model to the data to test the main prediction of the model. A comprehensive look at the data reveals that the post-shipment payment term is the predominant payment method in Colomian and Chilean imports. It accounts for as much as 90 percent of total import transactions in Colomia, and around 80 percent of import transactions in Chile, while letters-of-credit transactions covering only 5 percent of Colomian imports and around 10 percent of Chilean imports. It further shows that a sustantial level of variation across source countries is mostly explained y, in addition to exchange controls on payment methods, Asian countries the share of transactions covered y the post-shipment payment term declines to around 75 percent for Colomian imports from Asia and and to around 50 percent for Chilean imports from Asia. Controlling for goodsand rm-level xed e ects as well as other country-level characteristics, econometric analysis con rms that imports from an Asian exporter tends to use the post-shipment payment term signi cantly less y around 520 percentage points. Such a high prevalence of the post-shipment payment terms in general as well as the lack thereof in trade with Asian countries is at odds with existing theory models of trade nance or trade credit (Section 3). This paper proposes alternative model of trade nance y explicitly considering the peculiar feature of account receivales nancing. According to the model, the predominance of the post-shipment payment term can e explained y the self-liquidating and recourse nature of account receivales nancing when a trade nance loan is made with account receivales (i.e., trade credits) as collateral, it ecomes self-liquidating and the lender retains recourse to the orrower. In practice, account receivales further o er a roader range of nancing options such as factoring and securitization, all of which make trade nancing cost cheaper than otherwise. To the extent that account receivales nancing markets are less developed or their advantages are diluted y other implicit or explicit state policies on trade payment controls, it also explains why the post-payment term is less frequently used in Asia (Section 4). The model is further developed to derive the implication of the relationship etween trading partners on the pattern of payment methods, which is used as the unique hypothesis to test the validity of the model. Colomian imports data with trading partner relationship information strongly support the model prediction: controlling for importer- and exporter-level characteristics, the post-shipment payment term is more likely to e chosen for a transaction etween trading partners with stronger relationship in general, ut such tendency disappears for transactions with Asian countries or countries with explicit policy requiring to use letters of credit, where the account receivales nancing mechanism is expected to e weaker. Chilean data with the importer-country level relationship information yield qualitatively idential results (Section 5). Main ndings of this study are expected to complement a growing literature that studies
4 Trade Finance 4 the pattern of an optimal payment system in international trade. Schmidt-Eisenlohr (2013) shows that rms in a country with relatively lower nancing costs or weaker enforcement of contracts o er trade credit to counterparty rms in a country with relatively higher nancing costs or stronger enforcement of contracts. Olsen (2013) considers the optimal payment system in the presence of imperfect contract enforcement, and shows how ank intermediation mitigates such prolems in international trade. Antràs and Foley (forthcoming) also o er a prediction on the pattern of an optimal payment system ased on an imperfect contract approach, and test the prediction using international transactions data from a single U.S. food exporter. Demir and Javorcik (2014) nd supporting evidence for the imperfect contract approach using the Turkish industry-country level export data. Niepmann and Schmidt-Eisenlohr (2013a) investigate the use of letters of credit in exports y employing anking data from the U.S. 3 This paper also contriutes to the trade credit literature, which o ers various theory models that explain why trade credits exist. This includes transaction costs motive (Ferris, 1981)), suppliers informational advantage on uyers (Biais and Gollier, 1997; Smith, 1987) or etter aility in monitoring uyers moral hazard (Burkart and Ellingsen, 2004). Empirical evidence on these theories is provided in Petersen and Rajan (1997), Love, Preve, and Sarria-Allende (2007), and Klapper, Laeven, and Rajan (2012) among others. Other closely related literatures include studies on credit constraints and international trade. In the presence of xed costs for exporting, credit constrained rms nd it di cult to nance such xed costs, and are discouraged from participating in exporting (Chaney, 2013). This can alter the patterns of trade, depending on industry level nancial vulneraility as well as the nancial development of the countries (Manova, 2013), and thus nancial development can ecome a source of comparative advantage (Kletzer and Bardhan, 1987; Ju and Wei, 2011). Empirical studies nd that nancial development leads to a greater level of exports (Beck, 2002; Hur, Riyanto, and Raj, 2006), and credit constrained rms are less likely to ecome exporters (Mûuls, 2008). 4 Although the literature focuses on the comparison etween non-exporting and exporting rms in terms of long-term xed costs nancing, the current paper studies the di erence etween short-term domestic and export nancing even for a single exporter Methods of Payment in International Trade There are three major types of payment methods post-shipment payment terms, preshipment payment terms, and letters of credit in international trade, each of which is 3 There is a newly emerging literature employing various types of trade nance data. This includes Auoin and Engemann (forthcoming) and Van der Veer (forthcoming) for export credit insurance, and Felermayr and Yalcin (2013) for export guarantees. 4 Greenaway, Guariglia, and Kneller (2007) nd that the strong correlation etween rms nancial health and exporting status rather comes from the reverse causality, i.e., exporting improves rms nancial health.
5 Trade Finance 5 illustrated in <Figure 1>. The post-shipment payment (i.e., open account system) refers to when suppliers extend trade credit to uyers such that the intermediate goods are produced and shipped to uyers rst and the payment is made later. The exact opposite is true for the pre-shipment payment (i.e., cash-in-advance system) in that the payment y uyers is made to suppliers prior to the production or delivery of the intermediate goods. Therefore, it is the supplier that is responsile for nancing the post-shipment payment transaction and thus is exposed to non-payment risk from the uyer, while it is the uyer that is responsile for nancing the pre-shipment payment transaction and is suject to non-delivery risk from the supplier. In contrast to these, a letter of credit system involves a uyer s ank and a supplier s ank in such a way that the former guarantees the payment to the latter on ehalf of uyers. By accepting the agreement, the supplier s ank ecomes oliged to pay the supplier whether the uyer s ank actually pays or not. 5 As a result, the supplier s ank is exposed to non-payment risk from the uyer s ank. 2. Data 2.1. Colomia Transaction-level Import Data One of primary datasets for this study comes from the import transaction dataase of the Colomian National Customs and Taxes Authority (DIAN) over the period The value of import transactions in the data adds up to nearly 100 percent of the o cial import value reported y the Central Bank of Colomia. The unique feature of the data, even when compared to other countries micro-level customs data, is that every oservation is recorded at the transaction level with extremely detailed information. This includes the name of importers and foreign exporters oth at the rm level and payment methods in addition to other routine items such as CIF value, quantity, 10-digit product codes, country of exports, dates, etc. 7 Small transactions with CIF value elow US$ 100, which total.04 percent of the o cial import value, are excluded in the main analysis so as to remove noisy transactions. The sample is further restricted to import transactions from those countries that are covered y other main country-level variales (see elow), which account for 97 percent of the o cial import value in Regarding the payment methods item, there are 11 di erent types of payment methods, most of which can e roadly re-classi ed into three major payment methods (i.e., post- 5 This corresponds to the irrevocale con rmed letters of credit. Detailed descriptions on various kinds of letters of credit can e found, for example, in Venedikian and War eld (2000). 6 The main analysis of this paper will e ased on the single year s data in 2011, and the previous 3 years data will e used to provide the importer-exporter speci c past transactions history. 7 This dataset is also used in Ahn (2013) that focus on letters-of-credit transactions during the nancial crisis period.
6 Trade Finance 6 shipment payment, pre-shipment payment, and letters of credit). Transactions with few types of payment methods that cannot fall into these three major payment methods, which account for 17 percent of the o cial import value in 2011, are excluded in the main analysis. 8 The consequent nal dataset covers 80 percent of the o cial import value in Chile Transaction-level Import Data The other part of primary datasets for this study includes the import transaction dataase of the Chilean National Customs Service over the period The value of import transactions in the data adds up to 89.5 percent of the o cial import value reported y the Central Bank of Chile in Unlike the Colomian data, this dataset cannot identify the counterparty of the transaction foreign exporters, ut the data provide the same level of information in all other dimensions, such as the Chilean importer, payment methods, CIF value, quantity, 10-digit product codes, country of exports, dates, etc. Small transactions with CIF value elow US$ 100, which total less than.02 percent of the o cial import are excluded in the main analysis so as to remove noisy transactions. The sample is further restricted to import transactions from those countries that are covered y other main country-level variales (see elow), which account for 87 percent of the o cial import value in Regarding the payment methods item, there are 7 di erent types of payment methods, most of which can e roadly re-classi ed into three major payment methods (i.e., preshipment payment, post-shipment payment, and letters of credit). Transactions with few types of payment methods that cannot fall into these three major payment methods, which account for 2.7 percent of the o cial import in 2011, are excluded in the main analysis. 10 The resulting nal dataset covers 84.3 percent of the o cial import value in types of payment methods are in Spanish: (i) "PAGOS ANTICIPADOS", (ii) "CARTA DE CRED- ITO SOBRE EL EXTERIOR", (iii) "GIRO DIRECTO", (iv) "MECANISMO DE COMPENSACION O CUENTA DE COMPENSACION EN EL EXT", (v) "FINANCIACION DEL INTERMEDIARIO DEL MERCADO CAMBIARIO", (vi) "FINANCIACION DIRECTA DEL PROVEEDOR", (vii) "CREDITO EXTERNO DE MEDIANO Y LARGO PLAZO", (viii) "ARRENDAMIENTO FINANCIERO - LEASING -", (ix) "INVERSION EXTRANJERA DIRECTA", (x) "COMBINACION DE ALGUNAS DE LAS AN- TERIORES FORMAS DE PAGO", (xi) "IMPORTACION QUE NO GENERA PAGO AL EXTERIOR". Cross-checking etween Colomian imports and Chilean exports data y Chilean exporter name, HS codes, value, and quantity assigns (i), (ii), and (iii)-(vii) to pre-shipment payment, a letter of credit, post-shipment payment, respectively, and drops (viii)-(xi) in the analysis. 9 The main analysis of this paper will e ased on the single year s data in 2011, and the previous 3 years data will e used to provide the importer-exporting country speci c past transactions history types of payment methods are in Spanish: (i) "ANTICIPO", (ii) "ACREDITIVO"/"CREDITO BANCO 1 A 2 ANOS", (iii) "COBRANZA HASTA 1 ANO"/"COBRANZA ENTRE 1 Y 2 ANOS", (iv) "ANT/CRED"/"ANT/COB", (v) "CBIM"/"CBOFU"/"CBOFA", (vi) "OTRAS", (vii) SIN PAGO COBERTURA. Cross-checking etween Colomian imports and Chilean exports data y Chilean exporter name, HS codes, value, and quantity assigns (i), (ii), and (iii) to pre-shipment payment, a letter of credit, post-shipment payment, respectively, and drops (iv)-(vii) in the analysis.
7 Trade Finance Other Country-level Data Additional country-level data are merged to the primary transaction-level data. The rst set of the country-level data comes from the IMF s Annual Report on Exchange Arrangements and Exchange Restrictions (ARERER) dataase, which provides a description of the foreign exchange arrangements, exchange and trade systems, and capital controls of all IMF memer countries. This has een the original source of the widely-used capital control measures such as Chinn-Ito Index (Chinn and Ito, 2008) and Quinn Index (Quinn, 1997), and also used in Wei and Zhang (2007) to construct the measure of controls on trade payment. Of particular interest to this paper is the item that records whether a memer country imposes any policy measure that requires letters of credit for certain export transactions, which are expected to have rst-order e ects on the pattern of payment system across countries. Other country-level data include GDP data in 2010 from the World Development Indicators (WDI) dataase, ilateral distance data from CEPII (Mayer and Zignago, 2011), and legal origins data are from LaPorta, Lopez-de-Silanes, Shleifer, and Vishny (1999). 3. Empirical Findings and Discussion 3.1. Stylized Facts on Patterns of Payment Methods This section documents empirical ndings on the pattern of payment system in import transactions in Colomia and Chile. Beginning with the aggregate level, <Figure 2> summarizes the share of international transactions nanced y each payment system pre-shipment, letter of credit, post-shipment in Colomian and Chilean imports, oth measured in terms of total import values in It reveals a striking predominance of the post-shipment payment system: the post-shipment terms account for 90 percent of total import transactions in Colomia, and 79 percent of total import transactions in Chile. On the other hand, letters of credit and pre-shipment payments are used to nance only aout half the remaining transaction values, respectively. Fact 1 The post-shipment term is the predominant payment method in import transactions in Chile and Colomia. Turning to the country-level, the rst thing to consider is whether a country imposes any policy measure that restricts the choice of payment methods for international transactions ecause such policy will have rst-order e ects on the country s pattern of payment system. According to the AREAER y the IMF, there were 28 countries that required letters of credit for certain export transactions in <Figure 3> summarizes the share of import 11 Countries have di erent conditions under which international transactions are required to e settled y letters of credit; there are few countries that require all transactions to use letters of credit, while other countries require certain products, trade with certain countries, or transactions over certain values to e settled y letters of credit.
8 Trade Finance 8 transactions nanced y each payment system, separately for countries with an explicit policy requiring letters of credit and for countries without any such policy. Unsurprisingly, those countries with such policy tend to use post-shipment terms much less in their exports to Colomia and Chile, in favor of letters of credit. Fact 2 The share of Colomian and Chilean imports paid y the post-shipment term is signi cantly lower for imports from countries with payment control policies requiring letters of credit. Even after excluding those countries with the explicit policy measure requiring letters of credit, there is a sustantial level of variation in the use of each payment method across trading partner countries. <Figure 4> plots the share of transactions y post-shipment terms in Colomian imports (y-axis) and Chilean imports (x-axis) from each exporting country. A closer look at the gure further reveals that countries are concentrated in the northeast region, ut that Asian countries marked as a triangle are mostly located outside the northeast region. That is, the post-payment term is the predominant payment method in transactions with Chile and Colomia for most countries, ut its predominance is much weaker for Asian countries. <Figure 5> shows stark contrast etween Asian and non-asian countries in the share of transactions nanced y each payment system. The predominance of the post-payment term in import transactions reported in <Figure 2> ecomes even more pronounced in imports from non-asian countries, accounting for as much as 93 percent and 86 percent of import transactions in Colomia and Chile, respectively, whereas it accounts for only 74 percent and 50 percent of total Colomian and Chilean import transactions from Asian countries, respectively. 12 One possile factor ehind such regional level variation may e the di erence in the composition of product types y regions. There are theories suggesting that the pattern of payment methods may di er y product types (e.g., Hoefele, Schmidt-Eisenlohr, and Yu, 2013; Demir and Javorcik, 2014). Excluding those countries with the explicit policy measure requiring letters of credit, <Figure 6> and <Figure 7> check this possiility y comparing the share of transactions y each payment method etween Asian and non Asian countries across 15 roadly de ned sectors in Colomian imports and Chilean imports, respectively. 13 They all unamiguously show that such regional level variation in the pattern of payment 12 This appears largely consistent with South Korean data reported in Shin (2005) and Hong (2011) that the share of South Korean trade covered y letters credit is one of the highest in trade with other Asian countries. 13 Industry classi cation is ased on 2 digit HS codes. 1:01-05 Animal & Animal Products;2:06-15 Vegetale Products; 3:16-24 Foodstu s; 4:25-27 Mineral Products; 5:28-38 Chemicals & Allied Industries; 6:39-40 Plastics / Ruers; 7:41-43 Raw Hides, Skins, Leather, & Furs; 8:44-49 Wood & Wood Products; 9:50-63 Textiles; 10:64-67 Footwear / Headgear; 11:68-71 Stone / Glass; 12:72-83 Metals; 13:84-85 Machinery / Electrical; 14:86-89 Transportation; 15:90-97 Miscellaneous.
9 Trade Finance 9 methods holds across all sectors, con rming that it is not simply driven y the composition of product types y regions. Fact 3 The predominance of the post-shipment payment system is particularly pronounced in imports from non-asian countries, and much weaker for imports from Asian countries Econometric Evidence This section performs econometric analysis to check the roustness of the second and third stylized facts reported aove, y controlling for country- and rm-level characteristics. For example, it would e interesting to know whether the third stylized fact merely re ects some country-level characteristics common to Asian countries. Similarly, it could simply e the result of the composition of rm-level characteristics; it is possile that Chilean or Colomian importers that prefer the post-shipment payment terms for whatever reasons happened to transact mostly with non-asian countries. <Tale 1> summarizes regression results from the rm-country-6 digit HS product level Colomian and Chilean imports data. The dependent variale is the share of transactions paid y the post-shipment term in total transactions at the rm-country-6 digit HS product level, and de ned etween 0 and 1. Independent variales include country-level variales such as GDP in 2010 and distance, oth in log. Common law dummy variale is also included to capture contract enforceaility in exporting countries a la Antràs and Foley (forthcoming). Firm-HS6 level xed e ects in all columns asor any rm- and productspeci c characteristics. As a result, all speci cations explore country-level variation within a given importer-hs6 pair, and thus actual samples are restricted to importers that imported a certain HS6-level product from multiple countries. Of particular interest in this analysis are dummy variales for countries with letter-of-credit requirement policy and for Asian countries. The dummy variale for letter-of-credit requirement policy has the straightforward interpretation and checks the second stylized fact, while the dummy variale for Asian countries corresponds to the third stylized fact and will show if there is indeed anything special in Asian countries other than typical country-level characteristics. As expected, the policy dummy variale shows negative and statistically signi cant coe cient estimates for oth Colomia (column 2) and Chile (column 6). Any given importer in Colomia and Chile tends to have the same product paid in post-shipment term y 11 and 18 percentage points lower when exporting country imposes an explicit policy requiring letters of credit. This highlights potential omitted variale ias in other studies that overlook the role of payment control policies in investigating country-level determinants of payment methods. More interestingly, the dummy variale for Asian countries con rms the stark contrast etween Asian and non-asian countries for any given importer-hs6 product pair, suggesting that there exists something special in Asian countries that weakens the incentive to use the
10 Trade Finance 10 post-shipment payment terms. The share of Colomian imports paid y the post-shipment terms is on average 5.5 percentage point lower for imports from Asian countries compared to imports from non-asian countries (column 3). The numer is even igger 21 percentage point for Chilean imports (column 7). Overall, only the policy dummy and Asian countries dummy variales show roust signs and signi cance levels across all columns, while other country-level variales often change signs and signi cance levels depending on speci cations and countries considered. In sum, once rm-level and product-level characteristics are e ectively wiped out, the Asia dummy variale as well as the letter-of-credit policy dummy variale remains to e highly signi cant, oth economically and statistically, after controlling for other country-level key characteristics. We take this as evidence con rming the roustness of the second and third stylized facts reported aove Discussion The rst stylized fact that the post-shipment payment term predominates in Colomian and Chilean import transactions is not as expected from previous theoretical models that study the pattern of payment systems in international trade. In particular, the sheer size of the share of transactions covered y the post-shipment terms 80s90 percent in countries like Chile and Colomia is y all means rather striking. For example, recent theory models ased on incomplete contracts such as Antràs and Foley (forthcoming) and Schmidt-Eisenlohr (2013) predict that country-level contract enforceaility would e the main determinant of optimal payment choice. According to these models, the post-shipment term is more likely to e chosen when, other things eing equal, an importing country has a relatively stronger contract enforceaility than an exporting country. To the extent that Chile or Colomia does not have one of the strongest contract enforceaility in the world, the oserved share of import transactions paid y the post-shipment terms in Chile and Colomia is not readily reconciled with these models. Neither an extensive set of theory models in the trade credit literature squares well with such a high prevalence of the post-shipment payment terms in international transactions, not least ecause the literature tended to focus implicitly on domestic transactions. The main question in the literature has een why uyers orrow from suppliers instead of anks, or to put it di erently, why trade credit exists at all. Trade credit theories have o ered answers ased on the idea that suppliers have advantage over anks in monitoring or liquidating collateral thanks partly to input illiquidity, which may not e easily extended to international transactions ecause it is questionale if foreign suppliers would have such advantage over domestic anks, given the weaker cross-order contract enforceaility and/or stronger cross-order informational friction. Alternative theories ased on rm-level determinants such as market power or nancing conditions do not seem to e ale to explain the
11 Trade Finance 11 oserved pattern well either, ecause it would require an implausily skewed distriution of market power or nancial conditions etween importers and exporters. With all that eing said, all of the aove theories have merit and are elieved to operate in practice, ut none of them can reasonaly explain the degree of predominance of the post-shipment payment terms in import transactions oserved in Chile and Colomia; there must e something missing that makes the post-shipment payment term overwhelmingly prevalent in overall international transactions, ut at the same time that makes it less so in trade with Asian countries. This paper proposes, namely, the account receivales nancing mechanism as the missing element, y carefully considering how trade credit is used for trade nancing in practice. An interesting feature of trade nancing in the post-shipment payment term is that suppliers can pledge trade credit as collateral. 14 That is, trade nance loan is acked y self-liquidating trade credits (i.e., account receivales): the payment from the uyer is made directly to the lending ank, wherey the trade nance loan is automatically deducted efore eing transferred to the supplier s account. It is also suject to recourse: when the uyer fails to make the payment (i.e., trade credit defaults), the supplier is responsile for the repayment to the lending ank. Therefore, the lending ank will fail to collect loan repayment only if oth supplier and uyer default. This is why trade nance loan is often referred as safer than other types of loans (e.g., IMF, 2003). This self-liquidating and recourse nature of account receivales nancing makes, this paper argues, trade nancing cost of the post-shipment payment transaction cheaper than that of other payment methods. In addition, account receivales o er a roader range of nancing options such as factoring and securitization, and hence, the post-shipment payment term ecomes more appealing to oth uyers and suppliers. To the extent that account receivales nancing mechanism is weaker in Asia, this can explain not only the predominance of the post-shipment payment terms in general, ut also lack thereof in trade with Asian countries. The weaker account receivales nancing mechanism could stem from several reasons; it could simply e the re ection of the fact that many Asian countries are actively engaged in susidizing trade nance, often targeted at letter of credit owing to its non-fungiility. 15. It could also e the legacy of past foreign exchange control policies not captured in the present AREAER dataase. For instance, China regulated the ratio of the trade credit alance and payment periods for exporters and importers until recently under the State Administration of Foreign Exchange (SAFE). In South Korea, it was not until 1998 that the choice of payment methods in international trade 14 Burkart and Ellingsen (2004) considers the implication of trade credits as pledgeale assets on drawing additional loans. 15 The recent drop in metal prices precipitated y China s credit tightening, as widely covered y the media (e.g., Financial Times (2014)), stems from the implicit policy targeted at letters of credit in China; imported metals have ecome popular forms of collateral mainly ecause import letters of credit are cheaper and easier to get than other types of credit.
12 Trade Finance 12 is fully lieralized under the Foreign Exchange Management Act. <Figure 8> descries the evolution of the share of South Korean trade nanced y letters of credit since 1990, revealing two interesting facts. First, foreign exchange control policies were inding in that the relaxation of the payment methods regulation toward pre- and post-shipment payment terms coincides with the declining share of letters-of-credit transactions. Second, even a decade after the full lieralization, letters-of-credit transactions account for around 20 percent of international trade, which seems relatively high compared to present data from Colomia and Chile. This could e due to the fact South Korean exporters, importers, and anks are so accustomed to using letters of credit from their long experience under the regulation. In any case, such present and past credit policies and foreign exchange regulations, which tend to have een more popular in Asian countries, would have dampened the incentive to use trade credits, and thus in turn hindered the development in the account receivales nancing market. As an example, Factoring Chain International (FCI), a gloal network of factoring companies, reports that the size of factoring market in Asia (25 percent of world total) relative to the total export value (37 percent of world total) is, although having risen recently, one of the lowest in 2011(<Figure 9>). Given that factoring is one particular type of account receivales nancing, this indicates the under-developed account receivales nancing market in Asia A Model This section presents a model of trade nance, with a particular attention to actual practices of each payment method. The main element of the model that distinguishes itself from previous theory models is the explicit consideration of the self-liquidating and recourse nature of account receivales nancing, which enales to predict empirical ndings reported aove while preserving most of the properties from other theory models. The model also features rm-level heterogeneity in default proaility, and hence that in orrowing costs, to replicate the co-existence of multiple payment systems in ilateral trade. In addition, the model allows for other country-level variales in reduced forms to incorporate insightful properties from other theory models such as imperfect contract enforcement. This greatly helps to make the current model comparale to others Environment A random matching process provides a unique supplier-uyer relationship etween producers of intermediate goods and nal goods. Once a random match is made etween a supplier and a uyer, the supplier has the exclusive right to provide the inputs to the corresponding uyer, who in turn produces and sells nal goods to domestic consumers. 16 Factoring can e either recourse or non-recourse. Recourse factoring shares the property stated aove. Non-recourse factoring is another example of roader nancing options o ered y account receivales.
13 Trade Finance 13 Both suppliers and uyers are assumed to e risk neutral such that suppliers set the price for intermediate goods to maximize their own expected pro t, and similarly nal goods producers set the nal goods price to maximize their expected pro t. 17 Each transaction can e domestic (D) or international (F ) transaction, depending on the geographical location of each matched uyer and supplier. International transactions incur variale trade costs that take the form of an iceerg-type cost ( F > 1); whereas domestic transactions are free of such trade costs ( D = 1): This captures various sources of possile trade costs such as transportation costs. A nal goods producer transforms a unit of intermediate goods into nal goods without any additional cost. Accordingly, the demand for intermediate inputs (q s ) follows exactly the demand for nal goods (q ): q s = q = q = Ap ; (1) where A denotes the demand level for nal goods, = 1 1 > 1 is the constant elasticity of sustitution across varieties, and p is the price of nal goods. Intermediate goods are produced with a unit working capital requirement technology such that one unit of working capital (with unit cost w) is required to produce one unit of intermediate goods. Firms are heterogeneous in the level of default proaility: when a rm defaults, it fails to ful ll any commitment and is assumed to get zero payo. The proaility that a rm does not default throughout the transaction cycle is de ned as The countrylevel contract enforceaility 0 C 1 is introduced a la Antras and Foley (2011) and Schmidt-Eisenlohr (2013) such that when a rm in country C defaults, the counterparty rm can recover C fraction of claims. 19 For notational simplicity, no internal nancing is assumed and the only availale nancing in this model will e external, namely orrowing from anks. This assumption makes the default proaility as the only source of orrowing cost heterogeneity across rms in this model The main discussion of the model can e readily extended to other types of trade nance facilities (e.g., export credit insurance) y introducing risk averse agents. 18 The default proaility is assumed as exogenous and pulicly known in the aseline model, ut this assumption is relaxed later when trading partner relationship is considered. See Ahn (2011) for a model with endogenous default proaility ased on informational friction etween counterparty anks and rms in a transaction. 19 For inter-ank claims, a constant contract enforceaility of BB is assumed. On the other hand, lending anks are assumed to recover none of claims when orrowing rms default (i.e., = 0). As long as C > 0, the model, therefore, allows foreign suppliers as well as foreign uyers to have the advantage over domestic lenders in terms of recovery. This is for the sake of simplicity, and is not critical for the main results. 20 Additional sources of orrowing cost heterogeneity could e introduced y considering rm-speci c collateral assets or orrowing needs, which will asically re ect nancial health of each rm. For instance, Ahn (2011) introduces a fraction of working capital that can e used as collateral. A direct implication is that rms may have di erent values of collateralizale assets or use di erent technology in terms of tangile input usage, ut this can e more roadly interpreted as any other rm characteristic that leads to di erent orrowing cost across rms.
14 Trade Finance 14 One of the novel features of the model is the introduction of the three main modes of payment system post-shipment payment (OA), pre-shipment payment (CA), and a letter of credit (LC). The susequent sections will go over each payment system step y step, and provide conditions under which each mode is chosen as the optimal payment system y either party in the transaction. In terms of speci c timing of events, the transaction cycle of the post-shipment payment system egins with the delivery of intermediate goods at t = 0, and ends with the payment from the uyer to the supplier (hence, with loan repayment y orrowers) at t = 1: Similarly, a letter of credit transaction egins with the delivery of intermediate goods at t = 0, and ends with the payment from the uyer s ank to the supplier s ank (and the susequent loan repayment from the uyer) at t = 1, whereas the transaction cycle of the pre-shipment payment system egins with the uyer s advance payment to the supplier at t = 0, and ends with the delivery of intermediate goods (and the susequent nal goods sale and loan repayments) at t = 1: 21; Post-shipment Payment (OA) Buyer s Prolem On receiving the intermediate goods from a supplier, a uyer transforms them into the nal goods, which are then sold to domestic consumers. As long as the uyer does not default until the end of the transaction cycle (with proaility ), the uyer receives revenue from sales of nal goods, and then makes the payment (i.e., account payale) to the supplier. Since the revenue from sales of nal goods is enough to cover the inputs payment, the uyer does not need to orrow from a ank. Taking an input price p s as given, the uyer solves the simple expected pro t maximization prolem: maxe OA p j = p q p s q (2) to set the optimal price for the nal goods as a markup over marginal cost: p = 1 p s (3) Supplier s Prolem A supplier providing q units of intermediate goods needs q w value of working capital. Since, y extending trade credits to the uyer, the payment from the uyer will e made to the supplier only after the delivery; the supplier has to nance the working capital from a ank at the interest rate rs OA ; hence the cost function ecomes qwrs OA. If the uyer defaults and cannot ful ll the payment, the supplier can recover only 21 The legth of transaction cycles (t) can e allowed to vary across country pairs or shipping modes a la Ahn et al. (2011) and Berman et al. (2012). 22 Note that the price of nal goods as well as that of intermediate goods, hence the sales quantity is optimally determined at the very eginning of each transaction, and a uyer will have no incentive to change nal goods price after the intermdiate goods are delivered as ordered.
15 Trade Finance 15 the fraction of the account receivale, depending on the degree of contract enforceaility in the uyer s country, 0 C 1. Consequently, taking the interest rate as a given, the supplier maximizes the expected pro t conditional on his/her own non-default (with proaility s ) as in: maxe OA p s j s = p s q + (1 ) p s q C qwrs OA (4) s The optimal price for the intermediate goods is, taking into account the proaility of the non-payment from the uyer, set as a markup over marginal cost: p s = 1 1 wroa s + (1 ) C A risk-neutral supplier charges a higher price to a uyer with a higher default proaility to compensate expected losses from the non-payment, which also depends on the recovery ratio (i.e., C ). Bank s Prolem A ank lends working capital (qw) to a supplier and expects to receive gross repayment (qwrs OA ) from the supplier. An interesting feature of trade nancing in the post-shipment payment system is that it is acked y account receivales and thus self-liquidating, and the lending ank retains the recourse to the supplier. Therefore, the lending ank fails to receive loan repayment only if oth supplier and uyer default during the transaction cycle (with proaility (1 s ) (1 )). The anking sector is assumed to e competitive such that the ank sets the lending rate y equalizing the expected pro t with the opportunity cost of lending (or cost of funding): [1 (1 s ) (1 )] qwr OA s = qwi sc (6) where i sc is the risk-free gross return rate such as the deposit rate at the central ank in the supplier s country. The interest rate is then set as: (5) r OA s = i sc [1 (1 s ) (1 )] (7) It is intuitive that the orrowing cost is increasing in the ank s funding cost (i sc ) and supplier s default proaility < 0). More interestingly, it is also increasing in the s uyer s default proaility ecause the value of collateral (i.e., account receivale) declines as the uyer is more likely to default. Overall, the self-liquidating and recourse nature of trade nancing loan acked y account receivales will e, other things eing equal and unless the default proaility is perfectly correlated, cheaper than other type s general loans solely dependent on the orrower s repayment proaility.
16 Trade Finance 16 To sum up, the orrowing cost in equation (7) enters the intermediate goods price in equation (5), which in turn determines the nal goods price in equation (3) as: p OA (' s ) = 1 2 wroa s + ( Pre-shipment payment (CA) Buyer s Prolem 1 ) C ; (8) A uyer needs to pay a supplier efore the intermediate goods are shipped and delivered. If the supplier defaults and cannot complete the shipment, the uyer can recover only the fraction of the scheduled shipment, depending on the degree of contract enforceaility in the supplier s country, 0 sc 1. To nance the advance payment, the uyer needs to orrow from a ank at the interest rate r CA. The cost function for the uyer is thus p s qr CA ; and taking the interest rate and the intermediate goods price as given, the uyer maximizes expected pro t: maxe CA p j = s p q + (1 s ) p q sc p s qr CA to set the optimal price for the nal goods, taking into account the proaility of nondelivery from the supplier, as a markup over marginal cost: p = 1 p s r CA [ s + (1 s ) sc ] (9) A risk-neutral uyer charges a higher price for the nal goods as non-delivery risk from a supplier is higher, ut relatively less so when a recovery ratio ( sc ) is higher. Bank s Prolem A ank supports the transaction y lending to a uyer so that the uyer can make advance payment to a supplier. The ank will e ale to collect the full loan repayment from the uyer only if the uyer does not default (with proaility ). The ank equates the expected pro t with the opportunity cost of lending in a following way: p s qr CA = p s qi C (10) to set the optimal interest rate charged to a uyer with non-default proaility as: r CA = i C (11) The orrowing cost for a uyer increases with the ank s cost of funding in a uyer s country (i C ), and decreases with the non-default proaility ( ).
17 Trade Finance 17 Supplier s Prolem Since the advance payment made y the uyer can e used for working capital nancing, a supplier does not need to orrow from a ank. More interestingly, a uyer s default after the payment no longer a ects the supplier s pro t. The corresponding expected pro t for a supplier ecomes: maxe CA p s j s = ps q qw s yielding the optimal price for the intermediate goods as: p s = 1 w (12) Plugging the input price expressed in equation (12) and the orrowing cost expressed in equation (11) into the nal goods price in equation (9), the nal goods price is expressed as: p CA = 1 2 wrca 4.4. A Letter of Credit (LC) Buyer s Prolem 1 s + (1 s ) sc (13) By issuing a letter of credit, a uyer s ank oligates itself to pay a supplier s ank on ehalf of a uyer. From the ank s perspective, the letter of credit issuance essentially amounts to providing a loan to the uyer ecause the uyer s ank makes a payment to the supplier s ank rst and gets reimursement from the uyer later. The letter of credit fee for the uyer is thus similarly set as the interest rate for a loan, and the cost function for a uyer is expressed as p s qr LC : Taking the fee as a given, the uyer maximizes the expected pro t as: maxe LC p j = p q p s qr LC that yields the optimal nal goods price as: p = 1 p sr LC (14) Issuing Bank s Prolem (Buyer s Bank) Once the agreement to use a letter of credit is made and the intermediate goods are shipped, the uyer s ank has to meet the oligation to pay the supplier s ank. Unless the uyer defaults, the ank receives the repayment at the gross interest rate r LC (i.e, a letter of credit fee). The expected pro t of the uyer s ank is then equated with the opportunity cost: p s qr LC = p s qi C (15)
18 Trade Finance 18 and the corresponding optimal interest rate (a letter of credit fee) is exactly the same to the lending rate to a uyer in the pre-shipment payment case aove: r LC = i C (16) Supplier s Prolem The supplier s ank is promised to receive the payment from the uyer s ank on ehalf of the uyer, ut at the same time guarantees to pay the supplier whether the uyer s ank actually pays or not. Since the supplier receives the payment only after the delivery of the inputs, the supplier still faces the working capital nancing prolem. A supplier orrows the total working capital from the ank using the letter of credit proceeds as collateral, which also features self-liquidating property ut non-recourse in this case. In practice, a supplier receives the proceeds in advance with discount rate ; from the supplier s ank. Taking the discount rate as a given, the supplier s expected pro t function ecomes: maxe LC p s j s = ps q (1 ) qw s and the optimal price for the intermediate goods is set as: p s = 1 1 w (17) (1 ) The higher the discount rate charged, the higher the price of the intermediate goods. Con rming Bank s Prolem (Supplier s Bank) The supplier s ank would receive the payment from the uyer s ank only if the uyer s ank does not default (with proaility BB ), while the guaranteed payment is made to the supplier irrespective of the uyer s ank default. As discussed aove, the supplier s ank disurses the proceeds in advance with discount rate ; to the supplier. The supplier s ank equates the following expected pro t with the opportunity cost: BB p s q + (1 BB ) p s q BB = (1 ) p s qi sc (18) where BB and BB denote the uyer s ank s non-default proaility and the contract enforceaility etween anks. This yields the discount rate charged to a supplier for a letter of credit issued y a ank with the non-default rate BB as: 1 (1 ) = i sc [ BB + (1 BB ) BB ] It is intuitive that the discount rate will e higher as the uyer s ank is more likely to default or the cost of fund is higher. (19)
19 Trade Finance 19 Sustituting the supplier ank s optimal discount rate from equation (19) into equation (17), which in turn enters equation (14) together with equation (16), the nal goods price is expressed as: p LC = 1 2 w i C i sc [ BB + (1 BB ) BB ] (20) 4.5. Optimal Payment System Depending on who has control over the choice of payment systems, the payment system that gives the highest expected pro t for the corresponding entity will e chosen as an optimal payment system for a transaction etween a given uyer-supplier pair ( ; s ). The overall pattern of optimal payment system in this model depends on country-, uyer-, and supplier-level characteristics as well as the joint distriution of uyers and suppliers and the matching process etween them. This section compares key variales across payment systems as summarized in <Tale 2>, and performs simple comparative statics analysis to discuss conditions under which each payment system is optimally chosen for a transaction. The key property of the model will e that country-level determinants of the pattern of the payment system play a limited role in the presence of the account receivales nancing mechanism that strongly favors the post-shipment payment term. Symmetric case First consider the choice etween the post-shipment term and preshipment payment term for a symmetric case in which = s, C = sc, and i C = i sc : Comparing the intermediate goods price (p s ) in two payment systems, it is clear that a supplier always charges a higher price for the intermediate goods under the post-shipment payment system, y the amount of trade nancing cost (r) and the (e ective) proaility of successful payment from the uyer (1= [ + (1 ) C ]). The former re ects that the supplier is responsile for nancing the transaction, which therefore enters the supplier s marginal cost. The latter stems from the risk-neutral supplier s optimal pricing ehavior to take into account the non-payment proaility from the uyer s side: a lower intermediate goods price is charged to a uyer with lower default proaility (i.e., higher ). This o ers a unique explanation for the stylized fact in the trade credit literature that the price o ered via trade credits (implied y the discount rate in the early payment option) is often more expensive than the general ank-orrowing rate, which gives rise to the long-standing puzzle why trade credits are widely used despite such high prices. On the contrary, the nal goods price (p ) will e always lower when a transaction is supported y the post-shipment payment system than when it is done y the pre-shipment payment system. The nal goods price etween two payment systems di ers only y trade nancing cost (r). This is ecause risk-neutral uyer also factors in the non-delivery risk from the seller s side when setting an optimal nal goods price in the pre-shipment payment
20 Trade Finance 20 system. As for the di erence in the cost of trade nancing, it is easy to see that, in the symmetric case, the cost of nancing the post-shipment payment system is always lower than that of nancing the pre-shipment payment system (i.e., r CA > r OA ), precisely ecause of the self-liquidating and recourse nature of the nancing acked y account receivales, consistent with the general notion among practitioners that trade nance loan is safer than other types of loans (i.e., 1 (1 s ) (1 ) > ). Since the nal goods demand is decreasing with the nal goods price from equation (1) (i.e., < 0), the expected pro t for a supplier will e always greater in the postshipment payment system (i.e., rs OA q OA > q CA ), and thus a supplier will always prefer the post-shipment payment system to the pre-shipment payment system. Similarly, a uyer also nds the post-shipment payment system always more pro tale than the pre-shipment 1 payment system (i.e., > [s + (1 s ) sc ] p CA 1 ). p OA The important di erence from other trade nance models is that unlike their prediction that rms will e indi erent etween the post-shipment payment and pre-shipment payment system when countries (as well as rms in an implicit manner) are symmetric, this model suggests that oth uyers and suppliers will prefer the post-shipment payment system. This also o ers a unique explanation for wide use of trade credits in domestic transactions account receivales nancing mechanism, which has not een discussed in the trade credit literature. Comparative statics Considering a deviation from the country-level symmetry condition (i.e., i C 6= i sc or C 6= sc ); holding the rm-level symmetry condition xed (i.e., = s ), gives qualitatively similar predictions from previous studies (Antràs and Foley, forthcoming); Schmidt-Eisenlohr, 2013): as the ank s funding cost in the supplier s country is relatively higher than that in the uyer s country, the pre-shipment payment system ecomes more attractive for oth suppliers and uyers, and the same is true as the contract enforceaility in the supplier s country is relatively stronger than the contract enforceaility in the uyer s country. However, this model predicts that the sensitivity of the choice in the optimal payment system to variations in country-level parameters will e relatively limited ecause of the presence of the account receivales nancing mechanism discussed aove that unamiguously works toward the post-shipment payment system under the symmetric condition. In other words, it requires su ciently large asymmetries in country-level determinants for the pre-shipment payment system to e chosen as an optimal payment method in this model. A rm-level heterogeneity in the default proaility allows a richer prediction on the within-country share of each payment system. Considering a deviation from the rm-level symmetry condition (i.e., 6= s ); holding country-level parameters xed at the symmetric case, shows that as a uyer s default proaility is lower, nal goods prices for oth
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