Deposit money is money held as account balances at banks and other deposit-taking institutions, rather than as physical notes and coins. It is an asset of the account holder and a liability of the institution that maintains the account. Transferable deposits function as a medium of exchange because their holders can use them to pay others. Broader monetary measures also include some deposits that must first be converted into payment-ready balances. Deposit money constitutes a major component of modern monetary systems. (elibrary.imf.org)
Nature and monetary functions
A bank deposit is a claim against the issuing institution, not ownership of particular banknotes stored on the depositor’s behalf. Its value is expressed in the economy’s unit of account, such as dollars or euros. Deposits also provide a store of value, although their purchasing power can change and their repayment depends on the bank and applicable institutional protections. Their monetary usefulness rests on acceptance for payments and convertibility into other forms of money. (bankofengland.co.uk)
Demand deposits, including conventional checking or current-account balances, are normally withdrawable on demand. Transferable deposits can be used directly for payments through account transfers, checks, or payment cards. Savings and term deposits may face notice periods, maturity dates, or other restrictions. Consequently, “deposit money” sometimes refers narrowly to immediately spendable deposits and sometimes more broadly to deposits included in monetary aggregates. The relevant definition must be established before comparing statistics. (elibrary.imf.org)
Creation and extinguishment
Commercial banks create deposit money when they extend loans by crediting customers’ accounts. In a simplified example, a bank grants a borrower a $10,000 loan and credits a $10,000 deposit. On its balance sheet, the bank records an additional loan asset and an additional deposit liability. The borrower gains a deposit asset alongside an equal debt: the transaction creates money, but does not itself create an equivalent increase in net wealth. (bankofengland.co.uk)
Banks can also create deposits by purchasing assets from nonbank sellers and crediting their accounts. Conversely, repayment of bank-loan principal using deposits reduces both the outstanding loan and deposit money. An ordinary payment between two deposit holders generally reallocates existing balances rather than creating or extinguishing money. Depositing cash changes the composition of the public’s money holdings from currency to deposits; it does not, by itself, increase their combined total. (bankofengland.co.uk)
This accounting mechanism does not mean banks can lend without limits. Lending must remain commercially viable, and banks face funding costs, borrower demand, credit risk, and regulatory constraints. Creating a deposit is therefore distinct from securing the resources needed to maintain and settle the resulting obligations. (bankofengland.co.uk)
Payments and interbank settlement
When payer and recipient use the same bank, payment can be recorded by reducing one account balance and increasing another. Payments between different banks additionally require the institutions to settle their obligations. In modern two-tier monetary systems, central bank money provides the ultimate settlement asset, commonly through transfers of bank reserves. Customer deposits and reserve balances thus occupy different levels of the monetary system. (bis.org)
A payment system combines account records, payment instructions, and settlement arrangements. Some arrangements settle individual transfers; others offset obligations before settlement. Customers ordinarily experience the process simply as a debit and a credit, but the underlying transfer of settlement assets matters for banks’ liquidity management. Central banks may supply intraday liquidity against eligible collateral so that payments can settle without unnecessary delays. (bis.org)
Relationship to monetary aggregates
The money supply includes different instruments according to the statistical measure used. Narrow aggregates generally emphasize currency and readily transferable deposits, while broader aggregates include additional liquid deposits and sometimes other instruments. Classification depends not only on an instrument’s characteristics but also on the issuing and holding sectors. National definitions therefore differ, and not every bank liability qualifies as money. (elibrary.imf.org)
Deposit money should not be confused with the monetary base, which encompasses currency and central bank reserve balances. Commercial-bank deposits are liabilities of deposit-taking institutions; reserve balances are liabilities of the central bank. The money multiplier can describe a ratio between monetary aggregates and the base, but a fixed, mechanical multiplication of reserves does not adequately describe modern bank lending and deposit creation. (bankofengland.co.uk)
Regulation, confidence, and monetary policy
Banks must manage the possibility that depositors will transfer or withdraw funds while bank assets remain outstanding. Insufficient liquidity and losses on assets are distinct problems. Bank capital absorbs losses, whereas liquid assets help meet payments and withdrawals. Regulatory safeguards, supervision, and access to central bank facilities support confidence in deposits and their convertibility at face value. (bankofengland.co.uk)
Deposit insurance protects eligible deposits against bank failure within specified coverage rules. In the United States, the Federal Deposit Insurance Corporation covers qualifying deposits at insured banks, but not every financial product sold by those banks. Such protection concerns nominal deposit claims, not protection against inflation or every possible source of financial loss. (fdic.gov)
Monetary policy influences deposit creation through interest rates, financing conditions, and spending decisions. Quantitative easing can create additional deposits when central bank asset purchases from nonbanks are settled through commercial banks. Additional reserves do not automatically translate into a proportional expansion of lending. (bankofengland.co.uk)
Digital forms
Deposit money is already largely represented by electronic account records. A digital interface does not change the identity of the institution owing the money. Tokenized deposits represent commercial-bank claims using token-based records, whereas a central bank digital currency is a direct central bank liability. A stablecoin is a different instrument whose issuer, redemption arrangements, and backing must be distinguished from those of a bank deposit. These distinctions concern the underlying claim, not merely the technology used to transfer it. (bankofengland.co.uk)