When errors are discovered in accounting records, they must be corrected through rectification entries. The approach depends on when the error is discovered — before or after preparing the Trial Balance.
Rectification before preparing Trial Balance: One-sided errors are corrected by making entries on the appropriate side of the affected account. No journal entry is needed.
Rectification after preparing Trial Balance (using Suspense Account): When the Trial Balance does not agree, the difference is placed in a Suspense Account (debit if credit side is short, credit if debit side is short). As errors are discovered and corrected, the Suspense Account gradually reduces to zero.
Common errors and their rectification: 1. Omission of posting — Post to the correct account and adjust Suspense A/c 2. Wrong amount posted — Post the difference to the account and Suspense A/c 3. Posted to wrong side — Post double the amount to correct side and adjust Suspense A/c 4. Error of principle — Journal entry transferring from wrong account to correct account (two-sided, no Suspense A/c involved) 5. Error of commission — Journal entry transferring from wrong personal account to correct one
Key formula: Effect on profit = Total of overcharges to expenses + Total of undercharges to incomes (and vice versa)
Exam tip: ICAI almost always includes a Suspense Account question. Start by identifying whether each error is one-sided (affects Suspense A/c) or two-sided (does not). Then write the rectification journal entry for each.