Demand deposits, bank money or scriptural money are funds held in demand deposit accounts in commercial banks. These account balances are usually considered money and form the greater part of the narrowly defined money supply of a country.

A transaction account or demand deposit account is a deposit account held at a bank or other financial institution which is available to the account owner "on demand" and is available for frequent and immediate access by the account owner or to others as the account owner may direct. Access may be in a variety of ways, such as cash withdrawals, use of cheques and debit by electronic transfer. In economic terms, the funds held in a transaction account are regarded as liquid funds.