Skip to content
Accounting

Double-entry bookkeeping

What is double-entry bookkeeping, and why do the books always balance?

GlossaryUpdated 10 October 2026

Definition

Double-entry bookkeeping is the accounting system in which every transaction is recorded in at least two accounts, with equal debits and credits, so the books always balance.

What is double-entry bookkeeping in practice?

It reflects that every transaction has two sides: buying stock on credit increases inventory and increases what you owe. Debits increase assets and expenses; credits increase liabilities, equity and income. Because each entry balances, the accounting equation (assets = liabilities + equity) always holds, and errors are easier to find.

Buying goods on credit

Example
Dr Inventory
USD 9,000
Cr Accounts payable
USD 9,000

Debits equal credits

USD 9,000

Inventory (an asset) and accounts payable (a liability) both rise by the same amount.

Single-entry records, such as a cash book kept in a spreadsheet, can’t show the full financial position. Each balanced record is a journal entry, summed up in the trial balance.

See books that keep themselves

Watch a goods receipt, a delivery and an invoice post their own journals in 1flux, then follow each ledger line back to its document.

Book a demo

Last updated