This module covers how to rebuild accounting figures when the records are not complete. The skills are: finding credit sales and purchases from the receivables and payables accounts, using margin and markup, finding profit from the change in net assets, and saying how far the rebuilt figures can be trusted.
Check the current Cambridge IGCSE Accounting 0452 syllabus for the exact content points in your exam year. Our Accounting learning guide shows where this module sits among the others.
What should you already know?
You should be comfortable with ledger accounts, the trading and income statement, and the accounting equation. If any of those feel shaky, revisit control accounts and sole-trader statements first. Every method here is a normal account or equation with one figure missing.
An orienting example
Kedai Runcit Bunga has no income statement for the year, only two lists of assets and liabilities.
| Start of year (RM) | End of year (RM) | |
|---|---|---|
| Assets | 26,000 | 34,500 |
| Liabilities | 8,000 | 10,500 |
| Net assets | 18,000 | 24,000 |
The owner took RM600 a month in cash for personal use and paid in no new capital.
Drawings: 600 × 12 = RM7,200. Profit: closing capital less opening capital plus drawings = 24,000 − 18,000 + 7,200 = RM13,200.
Check: 18,000 + 13,200 − 7,200 = 24,000. The equation balances.
Notice that net assets rose by only 6,000 while profit was more than twice that. The gap is the cash the owner took out, which is why drawings must be added back.
In what order should you study the lessons?
- Recover a missing credit-sales amount first, because it teaches the core habit of rebuilding an account and solving for the one unknown.
- Derive purchases from a payables movement next, since it is the same method on the opposite side.
- Use a stated margin or markup correctly to find sales, cost of sales or lost stock when no ledger helps.
- Infer profit from net-asset movements with drawings for cases where there are no trading records at all.
- Explain limits of reconstructed data to finish, because evaluation questions use every earlier figure.
Which traps catch most students?
The first trap is leaving out discounts or bad debts and counting only cash. The second is choosing the wrong base for a percentage, using sales when the question means cost. The third is forgetting drawings and capital introduced when comparing net assets.
A fourth trap is treating a rebuilt figure as a fact. Answers that mention an assumption or a cross-check usually read more convincingly than answers that present a bare number.
How should you use the practice set?
Work through the incomplete records practice set after the lessons. Cover each answer, write your own working, then compare.
The last questions combine methods in one business, so you can check profit two ways. The double-entry and ledger trainer is useful for rebuilding the accounts, and the percentage-base explorer helps with margin and markup.
If you would like a teacher to watch your working on these questions, see our online one-to-one Accounting tuition.