During the past years, Germany generated a record budget surplus due to decreasing interest rates combined with high revenues.
According to Bundesbank calculations, as from the 2008 financial crisis, 240 billion euros were saved in interest on public debt in Germany. Due to the financial crisis, interest rates were lowered. 47 billion euros were saved from social insurance funds, municipalities, the federal government and sixteen states.
Originally in 2007, Germany had relatively high interest rates at a 4.23%, however, as it was hit with the financial crisis, rates dropped as low as 2.05%. After all these years of low interest rates, the slightest percentage change in rates could lead into very high additional costs.