This is Part 3 in Deficits 101, which is a series I am writing to help explain why we should not fear deficits. In this blog we consider the impacts on fiscal deficits on the banking system to dispel the recurring myths that deficits increase the borrowing requirements of government and that they drive interest rates up. The two arguments are related. The important conclusions are: (a) deficits introduce dynamics which put downward pressure on interest rates; and (b) debt issuance by government does not “finance” its spending. Rather debt is issued to support monetary policy which is expressed as the desire by the RBA to maintain a target interest rate.