Last reviewed: July 2026.
Bank Statement vs Cash Book: Differences and Adjustments explains why the two records differ, which items require cash-book entries and which remain reconciling items until the bank processes them.
Two records of the same bank account
The cash book or bank ledger is the entity’s accounting record, while the bank statement is the bank’s record of transactions processed on the account. They describe the same relationship from opposite perspectives and may use different debit and credit conventions. Agreement is expected only after cut-off and errors are considered.
Timing differences
Payments entered in the cash book may not yet appear on the bank statement because the bank has not processed them. Deposits recorded by the entity may also be in transit. These are valid reconciling items if they relate to genuine transactions, fall within a reasonable clearing period and are supported by evidence.
Items first identified on the bank statement
Bank charges, interest, direct debits, standing orders, merchant fees, loan payments and customer transfers may appear on the statement before the accounting team records them. These items require cash-book entries because the bank has already processed them. The entry should use the correct expense, income, receivable, payable or financing account.
Errors in the cash book
A payment may be entered twice, posted at the wrong amount, recorded in the wrong bank account or omitted completely. Correct the accounting record through a reversing or adjusting entry supported by the original document. Do not leave a known cash-book error as a permanent reconciling item.
Errors on the bank statement
Banks can make mistakes, although they are less common than book errors. An unauthorised or duplicated debit should be reported promptly. Until corrected, the item remains a reconciling difference with correspondence and expected resolution documented. The entity should consider fraud controls and notification deadlines.
Correct order of work
Begin with the prior reconciliation and confirm that old items cleared. Tick transactions appearing in both records, investigate unmatched amounts, and update the cash book for bank-originated items and accounting errors. Only after the ledger is corrected should the bank reconciliation bridge the adjusted book balance to the statement balance.
Outstanding payments and deposits
List each outstanding payment and deposit separately with date, reference and amount. Investigate stale cheques, rejected transfers and deposits that remain outstanding beyond the normal processing period. Old items may require reversal, reissue, contact with the counterparty or escalation rather than indefinite carry-forward.
Digital bank feeds and automation
Bank feeds can match transactions automatically, but matching rules may post to the wrong account or create duplicates. Reconciliation remains necessary to confirm completeness, cut-off, bank-account ownership and correct coding. Restrict rule changes, review unmatched transactions and retain evidence of manual overrides.
Fraud and control considerations
Bank reconciliation is an important detective control. Preparation should be independent of payment authorisation and bank-account administration where possible. Review unusual payees, round-sum transfers, deleted transactions, changes to supplier bank details and payments made outside normal workflows.
Documentation and reviewer sign-off
Retain the bank statement, adjusted cash-book extract, reconciliation, outstanding-item list and supporting corrections. The reviewer should check arithmetic, large and old items, subsequent clearance and agreement to the general ledger. Reconciliations should be completed promptly after each reporting period.
Foreign currency and multiple bank accounts
Where accounts are held in different currencies, reconcile each bank account in its transaction currency before translating the closing balance for reporting. Transfers between accounts should be matched on both sides and excluded from income or expense. Centralised treasury arrangements require clear ownership of cash, intercompany balances and bank charges.
Subsequent-clearance testing
A strong reviewer checks the next bank statement to confirm that outstanding deposits and payments cleared after period-end. Items that do not clear should be investigated for cancellation, rejection, fraud or duplicate recording. Subsequent-clearance evidence distinguishes genuine timing differences from errors that were incorrectly left on the reconciliation.
Period-end cut-off
Confirm that the final day’s receipts and payments are recorded in the correct accounting period.
Practical review checklist
- Update the cash book before preparing the final reconciliation.
- Treat genuine timing differences separately from known errors.
- Track every outstanding item to subsequent clearance.
- Investigate old, duplicate and unusual transactions.
- Separate reconciliation review from payment processing where possible.
Worked example
The bank statement shows 52,400, while the cash book shows 49,950. The statement includes bank charges of 250 and a direct customer transfer of 1,200 not yet recorded. The cash book is updated by crediting bank 250 for charges and debiting bank 1,200 for the receipt, giving 50,900. A deposit in transit of 3,000 and outstanding payments of 1,500 reconcile the statement balance of 52,400 to the adjusted cash-book balance of 50,900.
Related Accounting Support guides
Continue with the bank reconciliation worked guide, cash-book reconstruction guide, and the types of accounting errors guide.
Authoritative references
Authoritative references: The Accountant in Business study guide and Suspense accounts and error correction.
Key takeaway
A bank reconciliation is reliable only after the accounting record has been updated. Separate timing differences from errors, investigate old items, control automated matching and retain a clear bridge between the adjusted cash book and the bank statement.