Financing the Newsvendor: Supplier vs. Bank, and the Structure of Optimal Trade Credit Contracts

We consider a supply chain with a retailer and a supplier: A newsvendor-like retailer has a single opportunity to order a product from a supplier to satisfy future uncertain demand. Both the retailer and supplier are capital constrained and in need of short-term financing. In the presence of bankruptcy risks for both the retailer and supplier, we model their strategic interaction as a Stackelberg game with the supplier as the leader. We use the supplier early payment discount scheme as a decision framework to analyze all decisions involved in optimally structuring the trade credit contract (discounted wholesale price if paying early, financing rate if delaying payment) from the supplier's perspective. Under mild assumptions we conclude that a risk-neutral supplier should always finance the retailer at rates less than or equal to the risk-free rate. The retailer, if offered an optimally structured trade credit contract, will always prefer supplier financing to bank financing. Furthermore, under optimal trade credit contracts, both the supplier's profit and supply chain efficiency improve, and the retailer might improve his profits relative to under bank financing (or equivalently, a rich retailer under wholesale price contracts), depending on his current "wealth" (working capital and collateral).