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August 31, 2026·Accounting·Pasento

What is an account reconciliation?

Proving that a ledger balance agrees to independent support.

Definition

An account reconciliation is the work of proving that a general ledger balance agrees to independent support. In the books, it is the check that the number in one account is real, complete, and explained.

Independent support is something outside that ledger line: a bank statement, a policy schedule, a subledger, or a source document. If the two sides match, or if every difference is named, the account is reconciled.

Where it shows up

Balance Sheet: Related to proving each account balance against independent support.

P&L: Related to proving income and expense accounts the same way when they need it.

Cash flow: Related to proving cash against the bank, not a cash-flow line.

See also: Reconciliation Workpaper · Balance Sheet Reconciliation · Month-End Close

You will not find a reconciliation line on the Balance Sheet. The work sits behind each account: cash, prepaid expenses, accounts receivable, accounts payable, and the rest.

Income and expense accounts on the Income Statement can be proven the same way when they need it. Most of the pressure is still on point-in-time balances, because those carry into the next accounting period.

Cash flow is involved only when the account being proven is cash. A bank reconciliation is the cash version of this same work.

How it works

Start with the ending balance in the ledger. Pull the independent support for the same date.

Compare the two numbers. If they agree, document that they agree and stop.

If they do not agree, list every difference: timing items, errors, missing journal entries, or items on one side that do not belong. Each difference is either explained or it becomes a reconciliation discrepancy.

Explained differences stay on the reconciling list. Unexplained differences have to be investigated, and often need an adjusting journal entry before the statements go out.

Internal controls usually require this proof as part of the month-end close. The audit trail is the path from the ledger balance back to the support that proved it.

This is one account at a time. Sweeping every Balance Sheet account is a different, broader close task, and the file that holds the proof is a different object too.

A trial balance is the list of every account, not the proof of any one of them. The close checklist often names which accounts must be proven before the Financial Statement Package goes out.

Example

An auto shop's prepaid insurance account shows $6,200 in the ledger at June 30. The insurance policy schedule shows $6,200 remaining on the same date.

The bookkeeper compares the two. They match, so the account is proven.

If the ledger had shown $6,500, the bookkeeper would look for the extra $300. Maybe a July installment hit the books early, or a debit landed in the wrong account.

Once the extra $300 is named, the bookkeeper either recodes it or leaves a reconciling item that will clear in July. The $6,200 remaining coverage is what belongs on the June Balance Sheet.

The shop can now issue statements knowing that prepaid insurance is not a leftover guess. It is a number that ties to the policy.

Common mix-ups

This work versus a bank reconciliation. A bank reconciliation is this same proof applied to cash and the bank statement; cash is one account, while prepaid insurance, receivables, and fixed assets each get their own proof.

This work versus a balance sheet reconciliation. The sweep is every Balance Sheet account as part of the close; this page is the one-account proof that sits inside that sweep.

This work versus a reconciliation workpaper. The workpaper is the documented file showing how the balance was proven; the reconciliation is the act of proving it.

Related terms