A trial balance disagrees when total debits and total credits are different. The size of the difference and the side that is short tell you what kind of error to look for. This lesson sits inside trial balance and error limits and builds on extracting the trial balance.
Questions can give you a trial balance that does not agree and ask you to name the error or say what the difference could be.
Which errors push the totals apart?
An error shows up in the totals when it changes only one side of the double entry, or changes the two sides by different amounts. The common ones are:
- One-sided entry: a debit or a credit is missing.
- Different amounts: Dr 450 and Cr 540 for the same transaction.
- Both entries on the same side: two debits, or two credits.
- Addition error: a ledger account added up wrongly, so the balance is wrong.
- Balance carried down wrongly or omitted from the list.
- Balance in the wrong column. The difference is twice the balance.
How to trace a difference, step by step
- Add both columns again. A slip in the trial balance itself is the cheapest error to find.
- Work out the difference and which side is short.
- Look for an item equal to the difference. If you find one, check whether its other half was posted.
- Halve the difference. An item of that size may have gone on the wrong side.
- Test divisibility by 9. This hints at swapped digits.
- Check the correction brings the totals into agreement.
Worked example
Lestari Florist extracts this trial balance and the columns disagree.
| Account | Debit (RM) | Credit (RM) |
|---|---|---|
| Fixtures and fittings | 8,000 | |
| Inventory | 3,200 | |
| Trade receivables | 2,100 | |
| Bank | 5,240 | |
| Purchases | 9,600 | |
| Wages | 4,800 | |
| Repairs | 360 | |
| Rent | 2,400 | |
| Capital | 20,000 | |
| Sales | 14,100 | |
| Trade payables | 1,240 | |
| Totals | 35,700 | 35,340 |
Step 1, recheck the addition: debit column 8,000 + 3,200 + 2,100 + 5,240 + 9,600 + 4,800 + 360 + 2,400 = 35,700. Credit column 20,000 + 14,100 + 1,240 = 35,340. The addition is right.
Step 2, difference: 35,700 − 35,340 = 360, and the credit column is short.
Step 3, look for 360: Repairs is exactly RM 360 on the debit side. A repair paid from the bank should have a matching credit in the bank account.
Step 4, check the bank account: the RM 360 payment was never credited. This is a one-sided entry.
Step 5, correct it: credit Bank RM 360. Bank becomes 5,240 − 360 = RM 4,880. The debit total is now 35,340 and the credit total is 35,340.
The mistake to watch for
A tempting shortcut is the plug figure: make the columns agree by adjusting a convenient balance.
Mistaken correction: add RM 360 to trade payables so the credit column reaches 35,700.
The columns now agree, but trade payables is wrong by RM 360 and the bank balance is still overstated.
A trial balance difference is a symptom with a cause in the books. The correction goes where the missing entry belongs, not where it is easiest to hide the gap.
Check yourself
Try these on paper, then open each answer.
1. A trial balance shows debits of RM 12,430 and credits of RM 12,150. Which side is short, by how much, and what kind of entry could explain it?
Show answer
12,430 − 12,150 = 280. The credit side is short by RM 280. A credit of RM 280 may have been omitted, or a debit may be overstated by RM 280.
2. Which of these errors would a trial balance reveal? (a) a credit purchase omitted from both books; (b) rent of RM 500 paid by bank was credited to the rent account and also credited to the bank, with no debit; (c) electricity of RM 340 debited as RM 430 while the bank credit is RM 340; (d) electricity debited to the telephone account.
Show answer
(b) and (c). In (b) there are two credits of 500 and no debit, so the credit column is RM 1,000 too high. In (c) the debit is 90 more than the credit. In (a) both books omit the transaction, and in (d) the debit and credit amounts match, so the totals still agree.
3. A debit balance of RM 6,480 was listed in the trial balance as RM 6,840. By how much are the totals out, and which column is overstated? What is the hint in the difference?
Show answer
6,840 − 6,480 = RM 360, and the debit column is overstated. 360 = 9 × 40, so the difference is divisible by 9, which hints at swapped digits.
Where this leads next
Totals that agree are not the end of the story. Continue with explaining an error that does not break equality, then try the trial balance practice set. The trial-balance and error detective gives you a ledger with a hidden error to trace, and the percentage-base explorer helps you judge how large a difference is compared with the total.
A student who knows each error type but cannot decide where to start searching is missing a method rather than knowledge. A teacher in online one-to-one Accounting tuition can build that method with you.