Currency issuance[edit]
Similar to commercial banks, central banks hold assets (government bonds, foreign exchange, gold, and other financial assets) and incur liabilities (currency outstanding). Central banks create money by issuing interest-free currency notes and selling them to the public in exchange for interest-bearing assets such as government bonds. When a central bank wishes to purchase more bonds than their respective national governments make available, they may purchase private bonds or assets denominated in foreign currencies.
The European Central Bank remits its interest income to the central banks of the member countries of the European Union. The US Federal Reserve remits all its profits to the U.S. Treasury. This income, derived from the power to issue currency, is referred to as seigniorage, and usually belongs to the national government. The state-sanctioned power to create currency is called the Right of Issuance. Throughout history there have been disagreements over this power, since whoever controls the creation of currency controls the seigniorage income.
Interest rate interventions[edit]
Typically a central bank controls certain types of short-term interest rates. These influence the stock- and bond markets as well as mortgage and other interest rates. The European Central Bank for example announces its interest rate at the meeting of its Governing Council; in the case of the U.S. Federal Reserve, the Federal Reserve Board of Governors.
Both the Federal Reserve and the ECB are composed of one or more central bodies that are responsible for the main decisions about interest rates and the size and type of open market operations, and several branches to execute its policies. In the case of the Federal Reserve, they are the local Federal Reserve Banks; for the ECB they are the national central banks.