This paper investigates how government bond purchases affect leverage-constrained banks and non-financial firms by utilising a stochastic general equilibrium model. My results indicate that government bond purchases not only reduce non-financial firms' borrowing costs, amplified through a reduction in expected defaults, but also lower banks' profit margins. In an economy in which loans priced at par dominate in banks' balance sheets - as a reflection of the euro area's structure - the leverage constraint of non-financial firms is relaxed while that of banks tightens. I show that the leverage constraint in the non-financial sector plays an essential role in transmitting the impulses of government bond purchases to the real economy.
DSGE Model Financial Frictions Banking Sector Portfolio Rebalancing Channel Government Bond Purchases