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A bank tax, or a bank levy, is a tax on banks which was discussed in the context of the 2008 financial crisis. The bank tax is levied on the capital at risk of financial institutions, excluding federally insured deposits, with the aim of discouraging banks from taking unnecessary risks. The bank tax is levied on a limited number of sophisticated taxpayers and is not especially difficult

In macroeconomics, sterilization is action taken by a country's central bank to counter the effects on the money supply caused by a balance of payments surplus or deficit.