An error needs a suspense account only when it makes total debits differ from total credits. If the trial balance still agrees despite the error, you correct the books directly and no suspense account is involved.
This skill sits at the start of suspense and correcting errors and builds on what the trial balance can and cannot reveal.
What is the one question that decides it?
Ask: “If I had posted this mistake and added up every account, would debits still equal credits?” If yes, the error leaves the trial balance agreeing and you fix it with a journal entry. If no, the totals differ, and the difference is held in a suspense account until you find its causes.
An error keeps the totals equal when the wrong entry is still a complete double entry: a debit and a credit of the same amount, even if they went to the wrong account or were left out together. An error breaks the totals when one side is missing, or when the two sides carry different amounts.
How do the common errors sort?
| Error | What happens | Totals still equal? |
|---|---|---|
| Omission | The whole transaction is never recorded | Yes |
| Commission | Right amount, wrong account of the same class | Yes |
| Principle | Wrong class of account, such as an asset treated as an expense | Yes |
| Original entry | Wrong amount entered on both sides | Yes |
| Reversal | Debit and credit swapped | Yes |
| Compensating | Two errors of equal size cancel out | Yes |
| One-sided posting | Only the debit or only the credit is posted | No |
| Different amounts | Debit and credit posted with unequal amounts | No |
Check your own syllabus year on the Cambridge IGCSE Accounting 0452 page for the exact error types listed, because the wording of the list can change between versions.
Worked example
Melur Books finds six errors after a trial balance fails to agree. Decide which ones need a suspense account.
- A credit sale of RM 520 to a customer was never recorded anywhere.
- Electricity of RM 120 was debited to the rent account.
- A delivery van costing RM 8,000 was debited to the purchases account.
- A receipt of RM 250 from a customer was debited to the cash book, but the credit to the customer’s account was never posted.
- A purchase invoice of RM 480 was entered as RM 840 in both the purchases account and the supplier’s account.
- A sales invoice of RM 640 was debited to the customer as RM 640 but credited to sales as RM 460.
Step 1, test each error with the question.
- Error 1: nothing was recorded, so debits and credits both miss RM 520. Totals equal, omission, no suspense.
- Error 2: debit moved from rent to electricity, both expenses. Totals equal, commission, no suspense.
- Error 3: a non-current asset treated as an expense of the business. Totals equal, principle, no suspense.
- Error 4: the debit of RM 250 was posted but the credit was not. Totals differ, so suspense.
- Error 5: the same wrong figure, RM 840, appears on both sides. Totals equal, original entry, no suspense.
- Error 6: debit RM 640 against credit RM 460. Totals differ by RM 180, so suspense.
Step 2, find the suspense balance. Error 4 leaves debits RM 250 larger than credits. Error 6 leaves debits RM 180 larger. Together debits exceed credits by 250 + 180 = RM 430.
Step 3, decide the side. The credit side needs RM 430 to agree, so the suspense account carries a credit balance of RM 430.
Check it: if the debit total were RM 77,000 before suspense, the credit total would be RM 76,570 and suspense adds RM 430 to the credit side. 76,570 + 430 = 77,000.
The mistake to watch for
A common slip is to put every error through suspense because “something is wrong”.
Mistaken correction for error 3: Debit Suspense RM 8,000, credit Purchases RM 8,000.
The student sees an error and reaches for suspense. But the trial balance already agrees on this error, so suspense would create a difference that was not there.
The correct entry is a direct journal: debit Motor vehicles RM 8,000, credit Purchases RM 8,000. Reach for suspense only when the question shows the totals disagreeing, or when only one side of an entry is available.
Check yourself
Try these on paper, then open each answer.
1. A payment of RM 75 for stationery was credited to cash but never debited to the stationery account. Does it need suspense, and which side is the suspense balance?
Show answer
Yes. The credit was posted, the debit was not, so credits exceed debits by RM 75. Suspense takes a debit balance of RM 75 to make the totals agree.
2. Rent of RM 400 was posted to the debit of the insurance account instead of the rent account, and the cash credit is correct. Suspense or direct correction?
Show answer
Direct correction. Both the debit and credit are present and equal, so this is an error of commission. Debit Rent RM 400, credit Insurance RM 400.
3. Sales of RM 900 were debited to a customer for RM 900 but credited to the sales account for RM 990. Which side is suspense on and for how much?
Show answer
Credits are RM 90 larger than debits (990 − 900). Suspense takes a debit balance of RM 90.
Where this leads next
Once you can sort errors quickly, practise the entry itself in writing a correcting entry without repeating the original error, and use the double-entry and ledger trainer to test where each side lands. Then try the suspense and correcting errors practice set.
Some students sort the list correctly but lose the mark when two errors arrive together. That is the kind of pattern our teachers look for in online one-to-one Accounting tuition.