Trial Balance

A trial balance is a list of all the balances in the ledger at a date, with debit balances in one column and credit balances in another.

Two purposes:

1. Check the arithmetical accuracy of the double entry. Because every transaction has equal debit and credit entries, the two column totals should be equal. If they agree, it suggests the double entry has been completed correctly (arithmetically).
2. Provide the basis for the financial statements — the balances are used to prepare the statement of profit or loss and the statement of financial position.

Which side?

• Debit column: assets, expenses, drawings.
• Credit column: liabilities, income, capital.

A short extract:

A trial balance only checks that debits equal credits. Several errors leave the totals still equal, so they are not revealed:

The implication: a trial balance that balances does not prove the accounts are correct — only that they are arithmetically consistent. (Errors that do unbalance it — one-sided entries, different amounts each side, addition errors — are corrected via a suspense account, covered in 1.4.2.)

Benefits (advantages):

• Provides a quick arithmetical check that debits equal credits.
• Is a convenient summary of all balances in one place.
• Forms the basis for preparing the financial statements.
• Helps locate certain errors when it fails to balance.

Limitations (disadvantages):

• It does not detect the six types of error above.
• A balanced trial balance gives false reassurance that the accounts are correct.
• It shows balances at one date only; it does not show whether the figures are valid or fairly stated.
• It does not prevent fraud that is recorded with equal entries.

Exam framing. 'Advantages and disadvantages of a trial balance' is a recurring written question — structure your answer as benefits vs limitations and make the key point that it checks arithmetic, not accuracy.

Every error is corrected by a journal entry. The crucial decision is whether the suspense account is involved:

• Errors that did NOT affect the trial balance (omission, commission, principle, original entry, reversal, compensating) are corrected without a suspense account — you simply post the correcting double entry.
• Errors that DID affect the trial balance (one-sided entries, different amounts each side, miscasting an account) are corrected through the suspense account, which then clears to nil once every such error is found.

Method:

1. Open a suspense account with the trial balance difference (on the side that makes the totals agree).
2. For each single-sided error, journal the missing or excess entry, with the other leg in suspense.
3. When all such errors are corrected, the suspense account balances to zero.

Example. If discount allowed of $60 was omitted from the discount allowed account only: Dr Discount allowed $60, Cr Suspense $60. The suspense entry restores the balance.

A reversal example. A receipt of $200 entered as Dr Customer / Cr Bank (the wrong way round) needs a correction of twice the amount: Dr Bank $400, Cr Customer $400 — $200 to cancel the wrong entry and $200 to record it correctly.

When errors are corrected, a draft profit often has to be restated. The rule:

• Errors affecting income or expense accounts → change profit.
• Errors affecting only assets/liabilities (e.g. a wrong customer, a misposted bank balance) → do not change profit.

Direction of the adjustment:

• Overstated income or understated expense → profit was too high → reduce it.
• Understated income or overstated expense → profit was too low → increase it.

The classic trap — capital vs revenue (links to 1.3). Treating revenue expenditure (e.g. a repair) as capital expenditure (adding it to a non-current asset) overstates profit and overstates assets; the correction reduces profit and reduces the asset. The reverse error (capitalising too little) understates profit.

A statement of corrected profit lists the draft profit and then adds/subtracts each profit-affecting correction to reach the corrected figure — a frequent 6-8 mark task.