Definition
A trial balance is a periodic report listing every general ledger account with its closing debit or credit balance. It is the bookkeeper’s first review document at month-end and year-end. The purpose is twofold: confirm that total debits equal total credits (the system check) and spot any account balances that look wrong before they propagate into financial statements (the review check).
What a trial balance means in practice
For a bookkeeper, the trial balance is the page they open first when reviewing a closed period. Modern accounting platforms enforce double-entry at the data layer, so the system check almost always passes (debits equal credits because the software refuses to post unbalanced journals). The real value of the trial balance is the review check: scanning each line for balances that do not look right.
The typical review pattern is to compare the current trial balance against the previous period and against the same period a year earlier. Accounts that have moved by an unexpected amount get drilled into. Negative balances on accounts that should always be positive (or vice versa) get flagged. Suspense and rounding accounts that have non-zero balances need to be cleared before the period is locked. A bookkeeper who runs the trial balance once a month catches errors at 1/12th the cost of someone who only runs it at year-end.
A practical example: a UK consultancy reviews their November 2026 trial balance on 1 December. The bank account shows the expected positive balance. AR has gone up by 15,000 against October, which matches the timing of two new invoices that had Net 30 terms. AP has gone up by 4,000, matching three known supplier bills. Revenue is on track. Then the bookkeeper sees the GST control account is sitting at a 200 negative balance, which it should not be. They drill in, find that a customer refund was coded to the wrong tax rate, post a correcting journal, and the GST control returns to zero. Total review time: 20 minutes.
How the trial balance works by country
United Kingdom
The trial balance is part of the statutory accounting records required under section 386 of the Companies Act 2006. HMRC will request the year-end trial balance as part of any corporation tax enquiry, VAT inspection, or PAYE review. Records must be retained for six years under MTD for VAT and the broader corporation tax rules. Companies House does not require the trial balance to be filed, but the statutory accounts it feeds into must be filed within nine months of year-end for private companies.
Australia
The trial balance is the standard supporting document at BAS preparation and at year-end for any GST-registered business. The ATO does not mandate a frequency for producing it but expects it to be available on request as part of any audit. Most AU firms produce a trial balance monthly as part of their month-end close routine.
Canada
The trial balance feeds directly into the GIFI (General Index of Financial Information) schedule on the T2 corporate tax return. The CRA expects the trial balance to be available on audit and routinely requests it as one of the first documents in a GST/HST or income-tax review. Most Canadian SMBs produce a trial balance at month-end and quarter-end.
New Zealand
The trial balance is the standard year-end deliverable from a bookkeeper to a tax agent and is used as the input document for preparing the annual financial statements. IRD will request the trial balance on enquiry. Most NZ firms produce one bi-monthly to align with the GST return cycle (2-monthly is the default filing frequency in NZ).
Singapore
Section 199 of the Companies Act requires accounting records sufficient to show and explain the company’s transactions. Audit firms interpret this as requiring a current trial balance at every reporting period. Audited companies must produce a trial balance at year-end as input to the audit; non-audited companies still produce one for ACRA filing purposes.
Related terms
The trial balance sits between the ledger and the financial statements:
- The general ledger is what the trial balance summarises.
- The chart of accounts is the structure the trial balance is organised by.
- Every journal entry posted in the period contributes to the trial balance.
- The balance sheet is the asset, liability, and equity subset of the trial balance.
- The income statement is the revenue and expense subset.
- The trial balance review usually identifies items that need reconciliation work to resolve.
See also
For the practical mechanics of running a trial balance in Xero or QuickBooks Online, see the per-software workflow guides as they ship.
FAQ
See the answered questions above for why the trial balance must balance, the difference from the balance sheet, and what to look for during review.