Mortgages are long-term loans with nominal payments. Consequently, in incomplete asset markets, monetary policy can affect housing investment and the economy through the cost of new mortgage borrowing and real payments on outstanding debt. These channels, distinct from the traditional real rate channel, are embedded in a general equilibrium model. The transmission mechanism is stronger under adjustable-rate mortgages compared with fixed-rate mortgages. Further, persistent monetary policy shocks affecting the level of the nominal yield curve have larger real effects compared with transitory shocks. Persistently higher inflation gradually benefits homeowners under FRMs, but hurts them immediately under ARMs.

Mortgages are long-term loans with nominal payments. Consequently, under incomplete asset markets, monetary policy can affect housing investment and the economy through the cost of new mortgage borrowing and real payments on outstanding debt. These channels, distinct from traditional real rate channels, are embedded in a general equilibrium model. The transmission mechanism is found to be stronger under adjustable-than fixed-rate mortgages. Further, monetary policy shocks affecting the level of the nominal yield curve have larger real effects than transitory shocks, affecting its slope. Persistently higher inflation gradually benefits homeowners under FRMs, but hurts them immediately under ARMs.