We find robust empirical evidence that firms in locations with higher exposure to climate change pay significantly higher spreads on their bank loans. To alleviate the concerns related to using firms' headquarters in determining climate risk exposure, we exploit the economic link between a firm and its customers and find that the exposure of a firm's customers to climate risk also adversely affects that firm's cost of borrowing. In the cross-section, we find that the long-term loans of poorly rated firms drive the effect. Overall, our evidence suggests that lenders increasingly view climate change as a relevant risk factor.

Using a sample of 27 countries between 1990 and 2014, we find that banks charge higher interest rates and adjust other contractual features of their loans when lending to firms facing more stringent environmental regulations. Our evidence suggests that lenders’ concerns about the increase in environmental liabilities resulting from regulations is driving the results. Specifically, we show that firms facing such regulations have fewer participants in their loan syndicates, higher bankruptcy risk, and lower credit ratings, despite reducing their leverage. Overall, our results indicate that the observed higher loan spread is the result of environmentally sensitive lending practices by banks.