4. Correct accounting errors and suspense account

4.2. Errors that can be detected by the trial balance are determined.

Errors Detectable by the Trial Balance

A trial balance is a statement showing all ledger account balances: debits on one side and credits on the other. Its main purpose is to check that total debits equal total credits.

Some errors can be detected immediately because they cause the trial balance not to balance.


1. Types of Errors Detected by Trial Balance

1.1 Single-Sided Entry (Omission of One Side)

  • Occurs when a debit or credit entry is completely omitted in the ledger.

  • Example: Rent expense of Ksh 5,000 is debited but not credited to cash.

  • Effect: Trial balance will not balance.


1.2 Transposition Error

  • Occurs when two digits in a number are reversed.

  • Example: Ksh 540 recorded as 450.

  • Effect: Trial balance will not balance, usually by a difference divisible by 9.


1.3 Addition or Subtraction Error

  • Occurs when totals of a ledger account are miscalculated.

  • Example: Adding a column incorrectly in the purchases ledger.

  • Effect: Trial balance will show a difference.


1.4 Partial Omission

  • Only one part of a transaction is recorded in the ledger (either debit or credit).

  • Example: Cash paid for supplies recorded only as credit.

  • Effect: Trial balance fails to balance.


1.5 Carrying Forward Error

  • Error made when transferring balances from ledger to trial balance.

  • Example: Balance of Ksh 10,000 recorded as Ksh 1,000.

  • Effect: Trial balance difference appears, detectable.


2. Key Point

  • Only errors that affect the equality of debits and credits can be detected by the trial balance.

  • Errors that do not affect the balance (e.g., wrong account used, complete omission of a transaction on both debit and credit sides) cannot be detected.


3. Short Exam-Ready Summary

Errors detectable by trial balance include:

  1. Single-sided entries (debit or credit missing)

  2. Transposition of numbers

  3. Addition or subtraction errors in accounts

  4. Partial omission of transaction

  5. Errors in carrying forward balances

These errors cause the trial balance not to balance and prompt investigation.