A central bank is an institution responsible for conducting monetary policy for a country or monetary union and providing the central bank money used within its financial system. Its responsibilities commonly include issuing banknotes, supplying settlement balances to financial institutions, and supporting financial stability. Unlike a commercial bank, it generally does not provide ordinary retail banking services to the public. Its objectives, powers, and relationship with other public authorities are established through national or supranational legal arrangements. (imf.org)
Historical development
Modern central banking developed gradually from institutions concerned with government finance, banking, and currency issuance. Sveriges Riksbank, established in Sweden in 1668 as the Bank of the Estates of the Realm, is the world's oldest surviving central bank. The Bank of England was founded in 1694 to raise funds for the English government. Its responsibilities subsequently expanded, and the Bank Charter Act of 1844 formalized important aspects of its banknote-issuing role. These institutions acquired their modern functions over time rather than possessing them all at their foundation. (riksbank.se)
Objectives and monetary policy
Price stability is a central objective of many central banks, usually understood as maintaining low and stable inflation rather than holding every individual price constant. Other statutory objectives may include employment or financial stability. The United States Federal Reserve, for example, conducts monetary policy to promote maximum employment and stable prices. Under inflation targeting, policy is organized around an announced numerical inflation objective, with decisions informed by economic forecasts and other evidence. (imf.org)
Central banks influence financing conditions rather than directly determining all prices or lending decisions. Changes in policy interest rates affect borrowing costs, saving incentives, and spending by households and businesses. Policy also interacts with the exchange rate: a fixed exchange-rate commitment generally leaves less room for independent monetary policy than a flexible exchange rate. Consequently, central banks operate within different monetary frameworks rather than following one universal model. (federalreserve.gov)
Central bank money and commercial banking
Central bank money includes banknotes and electronic balances held by eligible institutions at the central bank. These balances, known as bank reserves, allow banks to settle payments between themselves. Currency and reserve balances form the core of the monetary base, which must be distinguished from broader measures of the money supply containing commercial bank deposits. (bankofengland.co.uk)
Commercial banks create deposit money when lending: a new loan normally produces a corresponding deposit in the borrower's account. This process is constrained by regulation, profitability, funding needs, and monetary conditions. It is not simply a mechanical multiplication of a fixed stock of reserves. A bank whose customers transfer deposits to other banks must obtain the settlement balances needed to complete those payments. Central banks therefore influence money creation without directly creating every unit of money used by the public. (bankofengland.co.uk)
Policy instruments
Policy implementation involves managing the terms on which institutions hold or obtain central bank money. Instruments include interest paid on reserve balances, lending facilities, reserve requirements where applicable, and open market operations involving securities purchases, sales, or secured transactions. Their relative importance varies across operating frameworks. For example, the Federal Reserve uses administered rates, including interest on reserve balances, to help guide short-term market rates toward its policy target. (federalreserve.gov)
Central banks may also use quantitative easing, involving large-scale asset purchases, and forward guidance about prospective policy. Asset purchases create central bank balances and can influence broader financial conditions; they are distinct from printing additional physical banknotes. Forward guidance works through expectations about future policy. These instruments supplement conventional rate policy, particularly when additional monetary accommodation is sought and ordinary interest-rate reductions are constrained. (federalreserve.gov)
Financial stability and payments
A central bank may act as lender of last resort, supplying liquidity to eligible institutions unable to obtain sufficient market funding. Emergency lending generally involves safeguards, including collateral and conditions concerning the recipient's solvency. Its purpose is to address funding difficulties and limit disruption, not to guarantee that every failing institution survives. A bank run illustrates how a sudden demand for withdrawals can create an acute need for liquidity. (ecb.europa.eu)
Some central banks supervise financial institutions or conduct macroprudential policy, which addresses vulnerabilities across the financial system rather than only individual firms. They may also operate or oversee payment and settlement infrastructure. Responsibilities differ: banking supervision, crisis resolution, and other financial functions may belong to the central bank, separate agencies, or several authorities jointly. (imf.org)
Governance and accountability
Central bank independence commonly means operational freedom to choose instruments within a legally defined mandate. It does not mean freedom from public accountability. Legislatures or other competent authorities establish objectives, while reporting requirements, published financial statements, policy explanations, and legislative scrutiny make decisions open to examination. Governance arrangements distinguish the authority to define policy goals from the discretion to implement them. (federalreserve.gov)
Relations with government also extend beyond interest-rate decisions. Transparency frameworks cover financial relations, agency services, information exchange, and cooperation with domestic and international institutions. The allocation of these responsibilities helps clarify the boundary between central banking and government financial management. (imf.org)
Digital forms of central bank money
A central bank digital currency is a digital payment instrument denominated in the national unit of account and constituting a direct central bank liability. Retail designs concern access by the public; wholesale designs concern financial institutions. Unlike commercial deposits or privately issued stablecoins, its defining feature is the identity of the issuer. Design questions include access, privacy, operational resilience, and interaction with existing banking and payment systems. (bis.org)