A ledger is a list of all the financial account information for a company or individual. It is used to track debits and credits for all accounts, both personal and business. Accountants, auditors, and internal accounting systems use the ledger to maintain the financial records of a company or individual.

The ledger can be an electronic spreadsheet or a printed journal. The assets, liabilities, equities, and capital of a company are all listed in the ledger. A ledger allows the accountant to easily compare assets with liabilities, as well as equity capital with revenues and expenses.