The balance-sheet channel operates through the net worth of business firms and this is related
with the ability of firms to borrow. In this literature, the borrower’s financial position is
influenced by the monetary policy and the business cycle. Under a restrictive monetary
policy, the firm’s asset prices are lower reducing the net worth of the firm while the cost of
external financing is higher making investment much more difficult. As Schmidt (1999)
remarks, for firms with problems to access external credit markets, there is an “external
finance premium cost” which is a positive function of the interest rate: the cost moves in the
same direction as a consequence of the own situation of the firm.
Summarising, although there is not a complete agreement (and probably not a full
understanding on the way the monetary policy works), both real economy and financial
factors play a fundamental role in the transmission of monetary policy and in the possible
asymmetries that generates. In the next section, a brief summary on the available empirical
evidence on asymmetries on the transmission of monetary policy and its determinants is done.
Figure 1. Monetary policy transmission channels
