We analyze the use of trade credit as a substitute for relationship lending credit when firms cannot otherwise obtain such credit. Using a sample of SMEs from the Survey of Italian Manufacturing Firms, we show that when opaque firms seeking relationship credit encounter transactional banks, they use a greater portion of trade credit. This findings suggest that opaque firms substitute their missing relationship credit with trade credit, because trade creditors are more able to evaluate soft information. The results depend on firm characteristics, the nature of the bank, and the size of the firms’ banking pool.