| Abstract: | This paper proposes a model that links households and firms, as usual, by 
markets for factors and goods and, additionally, by a banking sector that 
channels households' funds to firms and eliminates idiosyncratic risk. In 
equilibrium, agency costs and tax benefits of corporate debt are equalizing 
each other, which renders an institutionally based explanation of financial 
structure. Adjustment of corporate finance adds to the ordinary savings 
channel of fiscal and monetary policy. Taking real and financial interactions 
into account, the model predicts a somewhat lower impact of fiscal policy on 
macroeconomic aggregates as commonly assessed and a much stronger impact of 
monetary policy. This amplification is caused by the banking sector's 
translation of borrowing rates into lending rates and vice versa. |