How does a trial balance check the accuracy of the ledger, and what errors does it fail to detect?
Preparing a trial balance from the General Ledger to check that total debits equal total credits and explaining the errors that a trial balance does and does not reveal
A focused VCE Accounting Unit 3 Area of Study 1 answer on the trial balance. Explains how ledger balances are listed by debit and credit, why the totals must agree, the errors a trial balance can reveal, the errors it cannot, and a worked trial balance that balances.
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What this dot point is asking
VCAA wants you to prepare a trial balance from the ledger, explain why total debits should equal total credits, and identify which errors a trial balance reveals and which slip through undetected.
What a trial balance is
Assets, expenses and drawings normally carry debit balances; liabilities, owner's equity and revenue normally carry credit balances. Because every transaction was recorded with equal debits and credits, summing all the balances by side should give two equal totals.
Errors the trial balance reveals
Errors the trial balance cannot reveal
A balanced trial balance does not prove the records are correct. It misses any error that keeps debits equal to credits:
- An omitted transaction, recorded on neither side.
- A transaction recorded twice in full.
- A correct amount posted to the wrong account of the same type (for example debiting Vehicles instead of Equipment).
- Two errors of equal size on opposite sides that cancel out.
- Recording the wrong amount in both the debit and the credit.
Why this matters
The trial balance is the bridge from the ledger to the reports and the first quick check before preparing the Income Statement and Balance Sheet. Understanding its limits explains why other controls (bank reconciliation, comparing the inventory card to a stocktake, supporting every entry with a source document) are still needed.
Exam-style practice questions
Practice questions written in the style of VCAA exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
2019 VCAA3 marksA business prepared a Trial Balance at the end of June 2019. However, its accountant noticed a cash entry of $1 000 in the Wages account that should have been recorded as Drawings (Memo X4). Prepare the General Journal entry to correct this error. A narration is required.Show worked answer →
This is an error of the wrong account: a debit was posted to Wages instead of Drawings. Note that the Trial Balance still balanced because total debits still equalled total credits, so this type of error is not revealed by a trial balance.
Correcting entry:
Debit Drawings 1 000.
Narration: "Correction of $1 000 cash drawings incorrectly recorded as Wages (Memo X4)."
The credit to Wages removes the amount wrongly recorded as an expense, and the debit to Drawings records it correctly as a withdrawal by the owner. Marks: correct debit account, correct credit account, and a narration.
2019 VCAA2 marksFollowing the entry to correct a $1 000 cash drawing that had been recorded as Wages, describe the effects this correcting entry will have on Owner's Equity.Show worked answer →
Trace each side of the correction through owner's equity for the 2 marks.
**Removing 1 000, which increases owner's equity by $1 000.
**Recording 1 000.
The two effects offset, so the overall (net) balance of owner's equity is unchanged, but it is now correctly stated, with profit no longer understated and drawings no longer omitted.