Cambridge IGCSE Accounting · 0452
Chapter 3: Verification of Accounting Records — Part 1
Section 3.1 · The Trial Balance
This chapter covers the methods used to ensure that the book-keeping records are accurate before they are used to prepare financial statements. A high-achieving student must understand that while these checks are useful, they have specific limitations and cannot detect every type of error.
Definition and Purpose
A Trial Balance is a statement of ledger balances (balances brought down, or b/d) on a particular date. It is important to note that the Trial Balance is not part of the double-entry system itself; it is a verification tool.
The primary purposes of a Trial Balance are:
- Checking Mathematical Accuracy: To ensure that for every debit entry made in the ledger, there is an equal credit entry.
- Verifying Balancing Off: To check that the ledger accounts have been balanced off correctly at the end of the period.
- Preparation of Final Accounts: To provide a convenient list of balances used to prepare the Income Statement and the Statement of Financial Position.
Preparation and Rules of Entry
To prepare a Trial Balance, the balance b/d from each ledger account is copied into either the Debit or Credit column. If the double entry has been performed correctly, the totals of the two columns must be equal.
The Classification Rule (DAX / LIC)
You must memorise which accounts typically carry a debit or credit balance to ensure they are placed correctly in the Trial Balance.
| Debit Column (DAX) | Credit Column (LIC) |
|---|---|
| Debtors (Trade Receivables) | Liabilities (Trade Payables, Loans) |
| Assets (Non-current and Current) | Income (Revenue, Rent Received) |
| X / Expenses (Wages, Purchases, etc.) | Capital (Owner’s Equity) |
| Note: Drawings are also a Debit entry. |
Worked Example 1: Preparing a Trial Balance
Trial Balance as at 31 December 20X9
| Account Details | Debit ($) | Credit ($) |
|---|---|---|
| Bank (Asset) | 1,100 | |
| Wages (Expense) | 1,000 | |
| Cash (Asset) | 8,000 | |
| Capital (Equity) | 40,000 | |
| Drawings | 15,000 | |
| Purchases (Expense) | 15,000 | |
| Sales (Income) | 7,000 | |
| Vehicles (Non-current Asset) | 60,000 | |
| Debtors (Trade Receivables) | 21,900 | |
| Creditors (Trade Payables) | 60,000 | |
| TOTALS | 107,000 | 107,000 |
Note: Closing Inventory is never included in the Trial Balance because it is not yet a ledger balance at this stage.
Examiner Report Insights
- Terminology: Always use “Irrecoverable Debts” instead of “Bad Debts” and “Owner’s Equity” instead of “Capital” to match Cambridge mark schemes.
Errors Not Affecting the Trial Balance
A Trial Balance that balances is not absolute proof of accuracy. There are six specific errors that allow the debit and credit totals to remain equal even though mistakes have been made. Each error type still requires a journal correction (see Section 3.2).
| Error Type | What Happened | Why TB Still Balances |
|---|---|---|
| Omission | $400 credit sale to K. Lim never recorded at all | No debit or credit entered — totals unchanged |
| Commission | $500 received from D. Short credited to D. Small | One debtor credited, another debited — equal effect |
| Principle | $12,000 vehicle purchase debited to Motor Expenses | Debit to expense, credit to Bank — still double entry |
| Original Entry | $850 wages entered as $580 in both Wages and Bank | Same wrong amount on both sides |
| Complete Reversal | $300 cash sale: Dr Sales, Cr Cash (instead of Dr Cash, Cr Sales) | Debit and credit still equal, but on wrong sides |
| Compensating | Sales overcast by $200 and Purchases overcast by $200 | Errors cancel: debits and credits both overstated equally |
Errors Which Do Affect the Trial Balance
These errors cause total debits ≠ total credits. The difference is placed in a Suspense Account (Section 3.2) until corrected.
- Single entry: Only one side of a transaction recorded (e.g., Dr Purchases $400 with no credit).
- Different amounts: Dr Wages $600, Cr Bank $60.
- Overcast/undercast of day books: Sales Day Book total posted as $9,500 instead of $8,500.
- Wrong side of one account only: Dr Bank $200 for a payment that should have been Cr Bank $200.
Amending a Trial Balance
Sometimes exam questions give a draft Trial Balance with errors already included. You must adjust the debit and credit columns before preparing final accounts.
Worked Example 2: Amending a Trial Balance
A draft Trial Balance shows debits $47,600 and credits $49,800. Investigation reveals:
- Rent of $800 was debited to Rent but not credited to Bank (single entry).
- Drawings of $1,500 was credited to Drawings instead of debited (wrong side).
| Adjustment | Debit ($) | Credit ($) |
|---|---|---|
| Draft totals | 47,600 | 49,800 |
| Add: Credit Bank for missing rent payment | 800 | |
| Remove Drawings from credit column | (1,500) | |
| Add: Debit Drawings (correct side) | 1,500 | |
| Amended totals | 49,100 | 49,100 |
Limitations of a Trial Balance
Even when debits equal credits, a Trial Balance cannot confirm:
- That every transaction was recorded (omission).
- That amounts are correct (original entry).
- That items are in the correct account class (principle).
- That the business is profitable or solvent — it is only an arithmetic check.
It also excludes closing inventory (valued at year-end separately) and does not replace bank reconciliation or control account checks.
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