An account is a named record that tracks increases and decreases in a specific asset, liability, equity, revenue, or expense. It’s the basic classification unit of double-entry bookkeeping — every transaction is recorded by debiting one or more accounts and crediting one or more others.

Accounts are grouped into five types, each with a normal balance (the side — debit or credit — that increases the account):

TypeNormal balanceExamples
AssetDebitCash, accounts receivable, equipment, inventory
LiabilityCreditAccounts payable, loans payable, wages payable
EquityCreditOwner’s equity, retained earnings, common stock
RevenueCreditSales revenue, service revenue, interest income
ExpenseDebitRent expense, wages expense, supplies expense

The complete list of accounts an entity uses is its chart of accounts. The structure of that chart — how accounts are numbered, named, and grouped — shapes what the entity can report and how granularly it can analyze its finances.