Monthly bank reconciliation, step by step
Bank reconciliation is the routine that keeps a business's cash figure honest: each month you confirm that the cash in your books matches the bank, and you explain any difference. It is unglamorous but foundational — an unreconciled bank account means the single most important number in the accounts is unverified. This guide walks through the reconciliation step by step and the timing differences that make the two balances disagree before you start.
What reconciliation proves
A bank reconciliation compares the closing cash balance in your books with the closing balance on the bank statement for the same date, and accounts for every difference between them. When it balances, it gives assurance on three things at once: every real transaction has been recorded, nothing has been recorded twice or invented, and the cash figure the business relies on is accurate. That assurance is why reconciliation is treated as a core control rather than an optional tidy-up.
Why the balances differ
The two figures rarely match before you begin, almost always for timing reasons rather than errors:
- Outstanding cheques — written and recorded in the books but not yet presented at the bank.
- Deposits in transit — recorded in the books but not yet cleared by the bank.
- Bank items not yet booked — fees, charges, or interest that appear on the statement but have not been entered in the books.
Reconciliation lists each of these, adjusts for them, and expects the two balances to agree once they are accounted for. A difference that survives all of this is the signal that there is a genuine error to find.
The steps
The process is a disciplined tick-and-trace. Start from the statement's closing balance and your books' cash balance. Match each transaction in the books to the statement, marking off the ones that appear on both. Identify the items on the statement not yet in the books — typically fees and interest — and enter them in the books. Identify the items in the books not yet on the statement — outstanding cheques and deposits in transit — and treat them as timing differences. Adjust and confirm the two balances now agree. Anything left unexplained is investigated until it is resolved, not simply forced to balance.
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Avail our bookkeeping servicesDo it monthly, promptly
The value of reconciliation depends on doing it monthly and promptly, as soon as each statement is available. Caught early, a discrepancy is easy to trace back to the transaction that caused it; left for months, differences compound and become genuinely hard to unravel, and errors — or fraud — can hide in the gap. The same discipline extends beyond the bank account to business credit cards and to payment processors like Stripe, PayPal and Square, all of which need reconciling on the same rhythm. Reconciliation is the anchor step of the monthly close, and keeping it current is what makes the rest of the books dependable.
Sources
This guide is written against the official and clearly labelled professional references below. Rates, thresholds and portal procedures change between reviews, so open the primary source before relying on a figure.
Questions people also ask
What is a bank reconciliation?
It is the monthly check that the cash balance in your books matches the balance on your bank statement, once timing differences are accounted for. Any difference is investigated and explained. The purpose is to confirm that every real transaction is recorded, nothing is duplicated or invented, and the cash figure in the accounts can be trusted.
Why do the book and bank balances differ before reconciling?
Usually because of timing and omissions: cheques written but not yet cashed, deposits recorded but not yet cleared, bank fees or interest not yet entered in the books, and occasionally errors on either side. Reconciliation identifies each of these so that, once adjusted, the two balances agree. Genuine differences that remain point to an error to fix.
How often should a business reconcile its bank account?
Monthly is the standard, done as soon as the statement is available, so problems are caught while they are still fresh and easy to trace. Leaving reconciliation for months makes discrepancies far harder to unravel and can let errors or even fraud go unnoticed. A prompt monthly rhythm is one of the simplest and most effective bookkeeping controls.
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