Monetary policy effects asymmetric under multiple firm constraints

This Federal Reserve paper revisits the credit channel of monetary policy, proposing that firms facing multiple financing constraints exhibit an asymmetric response to policy changes.

Standard models often assume a single constraint, but in reality, firms navigate various limits such as collateral requirements, leverage caps, or earnings-based covenants.

The theory demonstrates that this multiplicity significantly dampens the transmission of expansionary policy to firm borrowing and investment, yet notably amplifies the transmission of policy tightening.

This asymmetry arises because when policy tightens, the most responsive constraint becomes binding, sharply curtailing borrowing.

Conversely, during policy easing, the least responsive constraint often remains binding, preventing substantial investment expansion.

This mechanism helps explain why monetary contractions tend to depress economic activity more profoundly than easings stimulate it, a pattern widely observed but not well-captured by traditional models.

Using U.S. firm-level data, the authors find strong support for their predictions.

A majority of publicly listed firms face multiple tight financial covenants at any given time.

These firms reduce external borrowing and investment markedly after policy tightenings but show little response to easings.

To establish causality, the study exploits a quasi-natural experiment: the 2019 ASC 842 accounting rule, which tightened many debt-based covenants.

Firms more exposed to this change subsequently displayed greater asymmetry in their monetary policy reactions.

Embedding this mechanism into a New Keynesian framework, the paper concludes that the aggregate decline in investment following a rate hike is roughly twice as large as the increase after an equally-sized rate cut.