Accountancy · Ch 9 — Rectification of Errors
Meaning and Classification of Errors
Meaning and Classification of Errors
However carefully a business records its transactions, some transactions will inevitably be recorded wrongly — an amount misread, an account confused with another, a transaction skipped entirely. Accounting classifies these errors into four broad types:
| Type | Meaning | Example |
|---|---|---|
| Errors of Omission | A transaction is left out of the books entirely (complete omission), or is journalised but not posted to the ledger (partial omission) | A credit sale is never entered in the Sales Book at all |
| Errors of Commission | A transaction is recorded, but with a wrong amount, wrong account (of the right class), wrong casting/carry-forward, or wrong side | ₹500 posted as ₹50; a payment posted to the wrong customer's account |
| Errors of Principle | A transaction is recorded by confusing capital and revenue items — violating a fundamental accounting principle, not merely a clerical slip | Cost of repairing machinery (a revenue expense) is debited to the Machinery Account (a capital expenditure account) |
| Compensating Errors | Two or more independent errors happen to cancel each other out, leaving the Trial Balance still agreeing | An overcasting of the Purchases Book by ₹500 exactly offset by an undercasting of the Sales Book by ₹500 |
Tamil Nadu's HSC Commerce Accountancy syllabus tests the rectification of errors exactly as CBSE/NCERT Accountancy does across India — the four-way classification above, and the one-sided/two-sided distinction in the next section, are common vocabulary in every board's commerce stream.
An error where a transaction is recorded by confusing a capital item with a revenue item (or vice versa) — a fundamental accounting mistake, not a mere clerical slip, though the correct amount is posted on the correct side.
Two or more independent errors whose effects on the Trial Balance happen to exactly cancel each other out, so the Trial Balance still agrees despite the errors genuinely existing.