Mortgage interest rates have clearly risen more than interest rates on savings accounts since the European Central Bank (ECB) started raising rates last year in its fight against inflation. Economists at De Nederlandsche Bank (DNB) asserted this while noting that interest rates on savings have actually increased "only slightly." The Dutch central bank said it was not surprised by the development. Even with previous interest rate increases by the ECB, it took some time before that led to consumers again receiving more interest on their savings.