A trial balance is a bookkeeping report that lists every general ledger account and its closing balance in a debit or credit column. Its main purpose is to confirm that total debits equal total credits before the accountant prepares the profit and loss statement and balance sheet. A correctly balanced trial balance is the starting point for period-end adjustments such as accruals, prepayments, and depreciation.
A trial balance lists every general ledger account balance in two columns; total debits must equal total credits because of the double-entry bookkeeping principle.
There are three types: unadjusted (before period-end journals), adjusted (after accruals and prepayments), and post-closing (after closing temporary accounts to retained earnings).
A balanced trial balance confirms arithmetic accuracy but does not catch all errors, such as a transaction posted to the wrong account or a compensating error of equal and opposite value.
The trial balance sits between the general ledger and the final financial statements; it is prepared as part of the month-end or year-end close process.
Most modern accounting software, including Xero, QuickBooks and Sage, generates a trial balance automatically from the ledger, removing the need for manual column addition.
A trial balance is a report that lists the balances of all general ledger accounts of a company at a certain point in time.
Frequently asked questions
What is the purpose of a trial balance?
A trial balance serves as a checkpoint between the general ledger and the final financial statements. By listing every account balance in debit and credit columns, it confirms that the total of all debits equals the total of all credits. This step catches transposition errors, missed postings, and arithmetic mistakes before they flow into the profit and loss account or balance sheet. It also gives the preparer an organised starting point for reviewing account balances and making period-end adjusting journals.
What is the difference between an unadjusted and an adjusted trial balance?
An unadjusted trial balance is produced directly from the general ledger before any period-end journals are processed. It is the starting point for the close. An adjusted trial balance is prepared after all accruals, prepayments, depreciation charges, and other adjusting entries have been posted. The adjusted version is the one used to draft the profit and loss account and balance sheet. Some businesses also prepare a post-closing trial balance after closing temporary revenue and expense accounts to retained earnings.
What errors does a trial balance not detect?
A trial balance confirms debits equal credits but cannot catch every type of error. It will not reveal a transaction omitted entirely, an entry posted to the correct side but the wrong account (an error of commission), two errors that cancel each other out (compensating errors), or a transaction recorded correctly in form but for the wrong amount (an error of original entry). Such errors require review of individual transactions, bank reconciliations, and analytical procedures.
Is a trial balance a legal requirement in the UK?
No. UK company law and HMRC do not require businesses to produce a trial balance as a standalone document. It is standard practice in double-entry bookkeeping and forms part of the audit trail supporting the statutory accounts and tax return. Accountants routinely request it when preparing year-end accounts. Sole traders on cash-basis accounting may not produce a formal trial balance at all, but any business using double-entry software will generate one as a matter of course.
How does a trial balance relate to the balance sheet and profit and loss?
The adjusted trial balance is the direct source for both the profit and loss account and the balance sheet. Revenue and expense accounts flow into the profit and loss; asset, liability, and equity accounts form the balance sheet. Because the trial balance has already confirmed that debits equal credits, the resulting financial statements should also balance, with net profit or loss reconciling the two. Any discrepancy between the financial statements and the trial balance signals a classification or extraction error.
How often should a trial balance be prepared?
For year-end accounts, a trial balance is prepared at least once at the close of the financial year. Businesses with a formal month-end process produce one every month, using it to review account balances, post accruals, and release prepayments before distributing management accounts. High-volume businesses may run a trial balance weekly to catch errors quickly. Most cloud accounting packages allow on-demand generation at any date, so the practical answer depends on how closely management accounts are monitored.
Can accounting software generate a trial balance automatically?
Yes. All major UK accounting packages, including Xero, QuickBooks, Sage, and FreeAgent, generate a trial balance automatically from the underlying ledger data. The report is usually available under the accounts, reports, or year-end menu and can be exported to a spreadsheet or PDF. Because entries are posted in real time, the trial balance is always up to date. This removes the manual column-addition step that caused errors in paper-based bookkeeping and makes the month-end close considerably faster.
Need help with this for your business?
Book a free 20-minute call with one of our MAAT or ACCA qualified accountants. We will tell you honestly whether we can help.
203 5-star reviews
ACCA & AAT qualified
Set up in 24 hours
Read more of our Small Business Accountants guides
