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Home > Research > Staff Working Paper No. 539: Bank leverage, credit traps and credit policies - Angus Foulis, Benjamin Nelson and Misa Tanaka
 

Staff Working Paper No. 539: Bank leverage, credit traps and credit policies - Angus Foulis, Benjamin Nelson and Misa Tanaka

31 July 2015

​Staff Working Paper No. 539: Bank leverage, credit traps and credit policies
Angus Foulis, Benjamin Nelson and Misa Tanaka

We construct an overlapping generations macroeconomic model with which to study the causes, consequences and remedies to ‘credit traps’ — prolonged periods of stagnant real activity accompanied by low productivity, financial sector undercapitalisation, and the misallocation of credit. In our model, credit traps arise when shocks to bank equity capital tighten banks’ borrowing constraints, causing them to allocate credit to easily collateralisable but low productivity projects. Low productivity weakens bank capital generation, reinforcing tight borrowing constraints, sustaining the credit trap steady state. We use the model to study policy options, both ex ante (avoiding credit traps) and ex post (escaping them). Ex ante, restrictions on bank leverage can help to enhance the economy’s resilience to the shocks that can cause credit traps. Further, a policymaker focused on maximising the economy’s resilience to credit traps would set leverage countercyclically, allowing an expansion of leverage in minor downturns and reducing leverage in upswings. However, ex post, relaxing a leverage cap will not help escape the trap. Instead, a range of unconventional policies are needed. We study publicly intermediated lending, discount window lending, and recapitalisation, and compare the efficacy of these policies under different conditions.

July 2017

This is an updated version of the Staff Working Paper originally published on 31 July 2015. The title of the paper has now been changed as below.

Credit traps and macroprudential leverage
Angus Foulis, Benjamin Nelson and Misa Tanaka
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