We examine how banks’ cross-border lending reacts to changes in the intensity of liquidity regulation using a new dataset on the UK’s Individual Liquidity Guidance. An increase in requirements reduces banks’ cross-border lending growth to banks and non-banks. But banks’ business models determine how they adjust: banks with higher deposit shares, such as those with UK retail operations, protect lending more; banks also preserve lending to countries they do most business, cutting elsewhere; foreign subsidiaries from countries not eligible to issue High Quality Liquid Assets (HQLA) show the strongest reduction in lending; in contrast, subsidiaries from HQLA-issuing countries cut intragroup lending.

We use a new data set on macroprudential foreign exchange (FX) regulations to evaluate their effectiveness and unintended consequences. Our results support the predictions of a model in which banks and markets lend in different currencies, but only banks can screen firm productivity. Regulations significantly reduce bank FX borrowing, and firms respond by increasing FX debt issuance. Moreover, regulations reduce bank sensitivity to exchange rates but are less effective at reducing the sensitivity of the broader economy. Therefore, FX regulations mitigate bank vulnerability to currency fluctuations and the global financial cycle, but appear to partially shift the snowbanks of vulnerability elsewhere.