3.1 The Trial Balance


2026 📋 Syllabus Objectives

By the end of these notes, you should be able to:

  1. Understand that a trial balance is a statement of ledger balances on a particular date
  2. Outline the uses and limitations of a trial balance
  3. Prepare a trial balance from a given list of balances and amend a trial balance which contains errors
  4. Identify and explain the errors that do not affect the trial balance: commission, compensating, complete reversal, omission, original entry, and principle

Objective 1: What is a Trial Balance?

A trial balance is a list of all the balances from every account in a business's ledger (its record books), shown at a specific date.

To understand this, let's quickly recall how double-entry bookkeeping works:

  • Every single transaction in accounting is recorded twice — once as a debit entry and once as a credit entry of the same amount.
  • Because of this rule, if you add up all the debit balances and all the credit balances across every account, they must be equal.

The trial balance takes advantage of this rule. At a chosen date (for example, the last day of a financial year), a business lists every account with its balance and places it in either the debit column or the credit column. If the two columns add up to the same total, it is a sign that the arithmetic in the records is likely correct.


Which Column Does Each Account Go In?

This is one of the most important things to memorise. Here is the rule:

Account TypeColumn in Trial Balance
Assets (things owned — e.g. machinery, cash, trade receivables)Debit
Expenses (costs paid — e.g. rent, wages, irrecoverable debts)Debit
Drawings (owner taking money/goods out)Debit
Purchases (buying goods to sell)Debit
Sales Returns (goods returned by customers)Debit
Liabilities (amounts owed — e.g. loans, trade payables)Credit
Income / Revenue (e.g. sales, interest income)Credit
Capital (money invested by the owner)Credit
Purchase Returns (goods returned to suppliers)Credit
Provision for Depreciation (reduction in value of assets over time)Credit
Provision for Doubtful Debts (allowance for customers who may not pay)Credit
Irrecoverable Debts Recovered (money received from previously written-off debts)Credit

💡 Quick memory trick: Think of the accounting equation — Assets = Liabilities + Capital. Assets sit on the debit side; liabilities and capital sit on the credit side. Expenses and drawings increase with debits just like assets do. Income and capital increase with credits just like liabilities do.

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