It develops a model where banks compete with trade creditors to fund small firms and applies it to study the effects of the Community Reinvestment Act (CRA). The empirical tests reveal that a CRA-induced increase in bank loans reduces small firms’ use of relatively expensive trade credit. The effect is more profound in low- and medium-income areas where financial constraints are tighter due to low bank competition. The effect is also larger for small firms that operate in trade credit-dependent industries.