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Accountants treat a tallying trial balance as proof that the books are correct.
A trial balance checks only that total debits equal total credits; omissions, wrong-account postings, compensating errors and duplicates pass it untouched.
Prepare it ledger-wise after all entries are posted; follow it with reconciliations of bank, debtors, creditors and tax balances to outside records.
A tallying trial balance plus a set of reconciliations that prove each key balance against an outside source.
A trial balance lists every ledger balance in two columns, debits on one side and credits on the other, and checks that the two totals are equal. It proves the arithmetic of double entry. It does not prove that the entries are right, complete or posted to the correct accounts.
Worked example: an eight-account trial balance
A small trading firm’s trial balance at 31 March:
| Ledger | Debit | Credit |
|---|---|---|
| Bank | ₹2,10,000 | |
| Sundry Debtors | ₹1,80,000 | |
| Stock | ₹2,60,000 | |
| Purchases | ₹2,90,000 | |
| Expenses | ₹1,00,000 | |
| Capital | ₹5,00,000 | |
| Sundry Creditors | ₹1,40,000 | |
| Sales | ₹4,00,000 | |
| Total | ₹10,40,000 | ₹10,40,000 |
Debits: ₹2,10,000 + ₹1,80,000 + ₹2,60,000 + ₹2,90,000 + ₹1,00,000 = ₹10,40,000. Credits: ₹5,00,000 + ₹1,40,000 + ₹4,00,000 = ₹10,40,000. The trial balance tallies.
Assets and expenses normally carry debit balances; capital, liabilities and income normally carry credit balances.
How do you prepare a trial balance from ledger balances, step by step?
- Post every entry for the period to the ledger.
- Close each ledger account and find its balance, debit or credit.
- List every account with its balance in the correct column.
- Total both columns.
- Compare the totals. If they differ, look for the error before going further.
In Tally or Zoho Books, the software produces the trial balance from the ledgers automatically, and in double-entry software it should always tally. If you build one in Excel from exported ledger balances, add a check cell that shows the difference between the two columns, so a mismatch is visible at once.
If debits equal credits, can the books still be wrong?
Yes, and often. A trial balance catches errors that break the equality of debits and credits. Many common errors do not.
| Error | Example | Does the trial balance catch it? |
|---|---|---|
| One-sided posting | Sale posted to Sales but not to the customer | Yes |
| Wrong amount on one side | ₹4,500 debited, ₹5,400 credited | Yes |
| Error of omission | A ₹15,000 bill never entered | No |
| Wrong account, same side | Rent debited to Repairs | No |
| Error of principle | Laptop purchase debited to Office Expenses | No |
| Compensating errors | Sales ₹1,000 too high, Purchases ₹1,000 too high | No |
| Duplicate posting | Same ₹8,000 bill entered twice | No |
The errors in the “No” rows are the dangerous ones. A missing bill, a duplicate payment or a receipt credited to the wrong customer will leave the trial balance looking perfect.
Trial balance vs ledger vs balance sheet
| Report | Purpose | Who uses it | When prepared |
|---|---|---|---|
| Ledger | Shows every entry and running balance for one account | Accountant | Continuously |
| Trial balance | Checks debit and credit totals across all accounts | Accountant, auditor | Month end, year end |
| Balance sheet | Reports assets, liabilities and equity at a date | Owners, lenders, regulators | Year end, quarterly for some |
Why outside checks are needed
Because a tallying trial balance can hide missing and misplaced entries, the next step is to check key balances against records the business does not control. The bank balance goes against the bank statement. Debtors go against customer statements. Creditors go against supplier statements. Tax balances go against Form 26AS and GST returns. This is reconciliation. Experienced reviewers also use simple manual tests, such as scanning for round amounts, duplicate figures and unusual accounts, to find what the trial balance cannot.