Reconstruct sales and purchases from incomplete records
Use receivables and payables control-account equations to derive missing credit sales and credit purchases.
Cambridge IGCSE Accounting 0452 / (9–1) 0985, 2027–2029 Version 1. These lessons follow the 2027–2029 syllabus only; the separate 2026 syllabus update is not yet mapped. Written practice is self-checked, not an official Cambridge grade. Full timed-paper practice and human subject-teacher review remain pending.
Before you begin
- No previous accounting study is assumed. Keep the business, transaction and accounting period in view, and distinguish a resource, a claim and a performance result.
Work on paper. Try each question before revealing help, and explain why your method works.
Quick readiness check
A customer's credit sale increases which control-account balance?
What you will learn
- Calculate missing credit sales from receivables records
- Calculate missing credit purchases from payables records
- Use reconstructed figures in financial statements while stating record limitations
Reconstruct credit sales from customer balances
Trade receivables control account: opening balance + credit sales − cash received − discounts allowed − returns inwards − irrecoverable debts − contra entries = closing balance, with other stated items included on their proper sides.
Rearrange the account equation for the missing credit sales. Do not include cash sales in the receivables control account because no customer balance is created.
Reconstruct credit purchases from supplier balances
Trade payables control account: opening balance + credit purchases − cash paid − discounts received − returns outwards − contra entries = closing balance, adjusting for any other stated items.
Use the source records given and keep credit purchases distinct from cash purchases. A reconstructed amount is only as reliable as the balances and missing-record evidence supplied.
Pause and explain
Opening payables are $4,200, credit purchases $17,500, payments $15,000 and returns outwards $700. Find closing payables; ignore discounts.
Worked example
Opening receivables $7,200; closing receivables $8,600; cash received $44,000; returns inwards $1,200; discounts allowed $800; irrecoverable debts $600. Find credit sales. Opening payables $5,000; closing payables $7,800; cash paid $31,200; returns outwards $600; discounts received $400. Find credit purchases.
Show the worked solution
- Credit sales = 8,600 − 7,200 + 44,000 + 1,200 + 800 + 600 = $48,000.
- Credit purchases = 7,800 − 5,000 + 31,200 + 600 + 400 = $35,000.
- These are credit transactions; add any separate cash sales or cash purchases only when the question requires total figures.
Answer Credit sales $48,000; credit purchases $35,000.
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Write your answer and reasoning first. Use a hint only if you are stuck. The model solution is for self-checking; your written work is not automatically marked.
Opening receivables $9,500; closing receivables $8,800; cash received $62,000; discounts $1,000; returns $1,400; write-offs $300. Find credit sales.
Give me a hint
Rearrange the receivables account equation to find the missing sales entry.
Compare my reasoning
- Credit sales = closing − opening + cash + discounts + returns + write-offs.
- = 8,800 − 9,500 + 62,000 + 1,000 + 1,400 + 300.
- Credit sales = $64,000.
Credit sales are $64,000.
Look for these in your work
- Equation rearranged
- Adjustments included
- Total correct
Opening payables $6,700; closing payables $9,100; payments $48,000; discounts received $900; returns outwards $1,100. Find credit purchases.
Give me a hint
Add reductions in payables back when solving for purchases.
Compare my reasoning
- Credit purchases = closing − opening + payments + discounts + returns.
- = 9,100 − 6,700 + 48,000 + 900 + 1,100.
- Credit purchases = $52,400.
Credit purchases are $52,400.
Look for these in your work
- Equation rearranged
- Supplier reductions included
- Purchases correct
A trader's records show cash sales $18,000 and reconstructed credit sales $64,000. Credit purchases are $52,400 and cash purchases $7,600. Calculate total sales and total purchases, keeping the cash/credit split visible.
Give me a hint
Add each type only after both credit and cash figures have been established.
Compare my reasoning
- Total sales = 18,000 + 64,000 = $82,000.
- Total purchases = 52,400 + 7,600 = $60,000.
- Show cash and credit subtotals separately so the reconstructed balances can be reviewed.
Total sales $82,000 (cash $18,000, credit $64,000); total purchases $60,000 (credit $52,400, cash $7,600).
Look for these in your work
- Sales total correct
- Purchases total correct
- Evidence split retained
Common mistakes
- Adding receipts to the closing receivable instead of balancing the account
- Omitting returns, discounts, bad debts or contra entries
- Mixing cash and credit sales or purchases
- Assuming a reconstructed figure is verified without source evidence
What can you explain now?
Do cash sales enter the trade receivables control account?
Compare with the explanation
No; they do not create customer balances
A cash sale is settled immediately and is not a credit receivable.
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Make it stick
Why do cash sales stay out of the trade receivables control-account reconstruction?
If you needed the solution, close it and solve the problem again from a blank page. A correct answer is stronger when you can explain the reason for each step.