Why is "Deducting drawings (or forgetting them entirely) in the capital comparison formula." a common mistake in Incomplete Records - Part 1?

Why it happens: Students know drawings reduce capital and instinctively deduct them from profit. How to avoid it: In the capital comparison formula, drawings are ADDED (not deducted). Drawings reduced capital during the year, so to find what profit must have been, we add them back: Profit = Closing capital − Opening capital + Drawings − Capital introduced. Source: Cambridge 0452 Examiner Reports 2022-2024

Why is "Applying a mark-up percentage to sales instead of cost." a common mistake in Incomplete Records - Part 1?

Why it happens: Students confuse mark-up and margin because both are percentages of gross profit. How to avoid it: Mark-up = % of COST (base = cost). Margin = % of SALES (base = sales). Remember: Mark-Up → COST; Margin → SALES. If told 'mark-up is 20%' and sales = \60 000: cost = \60 000 × 100/120 = \50 000 (NOT 20% × \60 000). Source: Cambridge 0452 Examiner Reports 2022-2024

Preparation of Financial StatementsCambridge IGCSE Accounting 0452

Incomplete Records - Part 1

Work through the notes, try the practice questions, then take the quiz. The report tells you exactly what to revise next.

Previous Next

Learn this Topic

Start with the slides for the quick version, then go deeper with the full study notes.

Short Study Notes in the form of Slides

Read the notes first. If the method in a worked example clicks, you're ready for the questions.

Short Study Notes — Incomplete Records - Part 1

Start with these resources to cover the key concepts, then work through the practice questions.

Page 1 / 0

Detailed Notes

Full prose, callouts and a recap — built for A* mastery, not just a quick scan.

Take these study notes with you

Download a branded PDF — full prose, callouts, recap and memorise list for Incomplete Records - Part 1, ready to print or save offline.

Incomplete Records Part 1 — Cambridge IGCSE Accounting 0452

Many small businesses do not keep full double-entry records. Part 1 covers the core techniques for reconstructing missing figures: finding profit from changes in capital (net assets), reconstructing cash and bank accounts, and using mark-up and margin to find missing sales or purchases.

What you’ll learn

Mapped to the Cambridge IGCSE 0452 syllabus (2026-2028).

Calculate profit for the year using the capital comparison method.
Construct a statement of affairs to find opening or closing capital.
Apply mark-up and margin percentages to find missing sales, purchases, or gross profit.
Reconstruct a cash or bank summary to find a missing figure.
Distinguish between mark-up (% of cost) and margin (% of sales).

Capital Comparison Method

Profit = the increase in net assets over the year, adjusted for drawings and new capital.

The most fundamental incomplete records technique: since Capital = Assets − Liabilities, any increase in net assets (after accounting for drawings and new capital introduced) MUST be profit.

Formula: Profit = Closing capital − Opening capital + Drawings − Additional capital introduced

Why this works: Net profit increases the owner's capital. Drawings reduce it. New capital introduced also increases it. So: Closing capital = Opening capital + Profit − Drawings + Capital introduced Rearranging: Profit = Closing capital − Opening capital + Drawings − Capital introduced

Statement of Affairs: When a business lacks a formal balance sheet, you prepare a Statement of Affairs — essentially a simplified SFP showing assets and liabilities at a given date to find capital.

Statement of Affairs as at [date]	$
Assets: Premises, equipment, inventory, trade receivables, bank, cash	X
Less Liabilities: Trade payables, loans, bank overdraft	(X)
Capital (net assets)	X

Example: Opening capital = $18,000; Closing capital = $24,500; Drawings = $7,200; No additional capital. Profit = $24,500 − $18,000 + $7,200 = $13,700

Cambridge exam tip: Examiners frequently give opening AND closing asset/liability data and ask you to find profit. Always prepare TWO statements of affairs (one for opening, one for closing) to find both capital figures.

Profit = Closing net assets − Opening net assets + Drawings − Capital introduced.
Statement of Affairs: list all assets and liabilities to find capital.
Prepare TWO statements of affairs when both opening and closing capital must be found.

See the full worked example for incomplete records - part 1 →

Mark-up and Margin

Two ways to express gross profit — as % of cost (mark-up) or % of sales (margin).

When the gross profit percentage is known, it can be used to find missing sales, cost of sales, or gross profit figures.

Mark-up = Gross profit expressed as a percentage of COST.

If mark-up = 25%: for every $100 of cost, the selling price is $125.
Cost : Gross profit : Sales = 100 : 25 : 125

Margin (gross profit ratio) = Gross profit expressed as a percentage of SALES (revenue).

If margin = 20%: out of every $100 of sales, $20 is gross profit.
GP : Sales = 20 : 100; Cost of sales = 80% of sales.

Converting between mark-up and margin:

Mark-up 25% → Margin = 25/125 = 20%
Margin 20% → Mark-up = 20/80 = 25%

Using margin to find missing figures:

Example 1: Sales = $80,000; Margin = 30%. Find gross profit and cost of sales.

GP = 30% × $80,000 = $24,000
Cost of sales = 70% × $80,000 = $56,000

Example 2: Cost of sales = $42,000; Mark-up = 40%. Find sales and gross profit.

Cost = 100 parts; Sales = 140 parts; GP = 40 parts.
Sales = $42,000 × 140/100 = $58,800
GP = $58,800 − $42,000 = $16,800

Using gross profit % to find missing inventory: Cost of sales = Sales × (1 − margin%) Purchases = Cost of sales + Closing inventory − Opening inventory → If purchases is unknown, rearrange: Purchases = Cost of sales + Closing − Opening

Cambridge exam tip: Carefully read whether you are given a mark-up or margin percentage. Examiners deliberately include both in a paper to test whether students know the difference. A very common error is applying a mark-up % to sales instead of cost.

Same gross profit of $25 → mark-up is 25% of cost, margin is 20% of sales.

Mark-up: GP as % of COST (base = cost).
Margin: GP as % of SALES (base = sales).
Mark-up 25% ≠ margin 25% — never treat them the same.
Use: GP = Margin% × Sales; or Sales = Cost × (100 + mark-up%)/100.

Cash and Bank Summary

Reconstruct missing receipts or payments using opening/closing balances and known flows.

When records are incomplete, a cash and/or bank summary (receipts and payments account) is used to find a missing figure.

Layout:

Receipts (Dr)	$	Payments (Cr)	$
Opening balance	X	Payments to suppliers	X
Cash sales	X	Expenses paid	X
Receipts from debtors	X	Drawings	X
Capital introduced	X	Wages	X
		Closing balance	X
Total	X	Total	X

Finding missing cash sales: If all payments and the closing balance are known, and cash sales is the only unknown: Cash sales = Total credits − Opening balance − Receipts from debtors − Capital introduced

Cambridge exam tip: Always balance the summary — both sides must equal. If one figure is missing, it is found as the balancing figure. Commonly tested: find total cash sales, or find total payments to creditors.

Cash/bank summary: both sides must balance; missing figure = balancing item.
Opening balance + all receipts = all payments + closing balance.
Commonly used to find: total sales (cash receipts) or payments to suppliers.

How it’s examined

Incomplete records questions appear on Paper 2, typically worth 15-20 marks. Part 1 skills typically tested: prepare a statement of affairs to find capital (5 marks), calculate profit using capital comparison (3 marks), apply mark-up/margin to find missing sales or purchases (4-6 marks). Examiners consistently report that students confuse mark-up and margin and apply the percentage to the wrong base.

Sources: Cambridge IGCSE Accounting 0452 Syllabus 2026-2028; 0452 Examiner Reports 2022-2024; 0452/22 past papers 2022-2024. Last reviewed 2026-05-14.

Master this Topic

Worked examples, formulae, definitions and the mistakes examiners flag — everything you need to push from a pass to an A*.

Take this whole topic with you

Download a branded revision sheet — worked examples, formulae, definitions and common mistakes for Incomplete Records - Part 1, ready to print or save as PDF.

Step-by-step worked examples — Incomplete Records - Part 1

Step-by-step solutions to past-paper-style questions on incomplete records - part 1, written exactly the way a tutor would explain them at the board.

1Calculate Profit Using the Capital Comparison Method (8 marks)
Extended• Adapted from 0452 past paper• capital comparison, statement of affairs, profit, incomplete records
Question
Anika runs a business but does not keep full double-entry records.

At 1 January 2024 her assets were: premises $40 000; equipment $12 000; inventory $4 800; trade receivables $3 200; bank $2 100. Her liabilities were: trade payables $5 600; bank loan $10 000.

At 31 December 2024 her assets were: premises $40 000; equipment $10 000 (after depreciation); inventory $5 400; trade receivables $4 100; bank $3 600. Her liabilities were: trade payables $4 900; bank loan $8 000.

During 2024 Anika drew $14 400 from the business and introduced additional capital of $3 000.

(a) Prepare Statements of Affairs at 1 January 2024 and 31 December 2024 to find opening and closing capital. (b) Calculate net profit for the year.
Step-by-step solution
1. Step 1
  Opening Statement of Affairs (1 Jan 2024): Assets: Premises $40 000 + Equipment $12 000 + Inventory $4 800 + Trade receivables $3 200 + Bank $2 100 = $62 100. Liabilities: Trade payables $5 600 + Bank loan $10 000 = $15 600. Opening capital = $62 100 − $15 600 = $46 500.
2. Step 2
  Closing Statement of Affairs (31 Dec 2024): Assets: Premises $40 000 + Equipment $10 000 + Inventory $5 400 + Trade receivables $4 100 + Bank $3 600 = $63 100. Liabilities: Trade payables $4 900 + Bank loan $8 000 = $12 900. Closing capital = $63 100 − $12 900 = $50 200.
3. Step 3
  Calculate profit using capital comparison formula: Profit = Closing capital − Opening capital + Drawings − Capital introduced Profit = $50 200 − $46 500 + $14 400 − $3 000 = $15 100.
Answer
Opening capital $46 500; Closing capital $50 200; Net profit = $15 100.
Examiner tip
Always prepare two statements of affairs and clearly label the dates. The most common error is omitting drawings (or deducting instead of adding them) in the formula. Drawings REDUCE capital during the year but are NOT a business expense, so they are added back when finding profit.
2Apply Mark-Up and Margin to Find Missing Figures (8 marks)
Extended• Adapted from 0452 past paper• mark-up, margin, cost of sales, incomplete records
Question
(a) A business has sales of $120 000 and a gross profit margin of 25%. Calculate: (i) gross profit; (ii) cost of sales.

(b) A business has cost of sales of $63 000 and a mark-up of 40%. Calculate: (i) sales; (ii) gross profit.

(c) A business has sales of $84 000 and mark-up of 20%. Opening inventory $6 000; closing inventory $7 200. Calculate purchases.
Step-by-step solution
1. Step 1
  (a) Margin = 25% of sales. (i) Gross profit = 25% × $120 000 = $30 000. (ii) Cost of sales = 75% × $120 000 = $90 000.
2. Step 2
  (b) Mark-up = 40% of cost. So Cost:GP:Sales = 100:40:140. (i) Sales = $63 000 × 140/100 = $88 200. (ii) Gross profit = $88 200 − $63 000 = $25 200 (or $63 000 × 40% = $25 200).
3. Step 3
  (c) Mark-up 20% on cost → Cost:Sales = 100:120 → Cost = 100/120 of sales. Cost of sales = $84 000 × 100/120 = $70 000. Purchases = Cost of sales + Closing inventory − Opening inventory = $70 000 + $7 200 − $6 000 = $71 200.
Answer
(a) GP $30 000; COS $90 000. (b) Sales $88 200; GP $25 200. (c) Purchases $71 200.
Examiner tip
The most common error: applying mark-up % to sales instead of cost. Mark-up is ALWAYS % of cost. If mark-up = 20%, then for every $100 cost, price = $120 — cost is 100 parts, sales are 120 parts.

Key Formulae — Incomplete Records - Part 1

The formulae you need to memorise for incomplete records - part 1 on the Cambridge IGCSE 0452 paper, with every variable defined in plain English and a note on when to use it.

Capital Comparison Method
$Profit = Closing capital − Opening capital + Drawings − Additional capital introduced$
$Closing capital$
Net assets at the end of the period (from closing statement of affairs)
$Opening capital$
Net assets at the start of the period (from opening statement of affairs)
$Drawings$
Cash or goods taken from the business by the owner (ADDED because they reduced capital but are not an expense)
$Capital introduced$
Additional funds put into the business by the owner during the period (DEDUCTED)
When to use
When a business lacks formal accounting records and profit must be derived from changes in net assets.
Example
$50 200 − $46 500 + $14 400 − $3 000 = $15 100 profit.
Gross Profit Margin
$GP margin% = (Gross profit ÷ Sales) × 100 | Gross profit = Sales × Margin% | Cost of sales = Sales × (1 − Margin%)$
$Gross profit$
Sales minus cost of sales
$Sales$
Total revenue
$Margin%$
Gross profit as a percentage of sales
When to use
When margin % is given and a sales or cost figure is needed.
Example
Margin 25%, Sales $120 000 → GP = $30 000; COS = $90 000.
Mark-Up
$Mark-up% = (Gross profit ÷ Cost of sales) × 100 | Sales = Cost × (100 + Mark-up%) / 100$
$Cost of sales$
The base (denominator) for mark-up
$Mark-up%$
Gross profit as a percentage of COST
When to use
When mark-up % is given and sales or gross profit needs to be found.
Example
Mark-up 40%, Cost $63 000 → Sales = $63 000 × 140/100 = $88 200.

Key Definitions and Keywords — Incomplete Records - Part 1

Definitions to memorise and the exact keywords mark schemes credit for incomplete records - part 1 answers — sharpened from recent examiner reports for the 2026 0452 sitting.

Statement of Affairs
Examiner keyword
A simplified statement of assets and liabilities prepared for a business without formal accounting records, used to calculate capital (net assets) at a given date. Capital = Total assets − Total liabilities.
Mark-Up
Examiner keyword
Gross profit expressed as a percentage of COST price. If mark-up = 25%, for every $100 of cost the selling price is $125 (cost is 100 parts, gross profit is 25 parts, sales are 125 parts).
Gross Profit Margin
Examiner keyword
Gross profit expressed as a percentage of SALES (revenue). If margin = 25%, out of every $100 of sales, $25 is gross profit and $75 is cost of sales.
Incomplete Records
Examiner keyword
A system where a business has not maintained full double-entry bookkeeping. Common in small sole trader businesses. Accounting figures must be reconstructed from bank statements, receipts, and other partial records.

Common Mistakes and Misconceptions — Incomplete Records - Part 1

The traps other students keep falling into on incomplete records - part 1 questions — taken from recent Cambridge IGCSE 0452 examiner reports and mark schemes — and how to avoid them.

✕Deducting drawings (or forgetting them entirely) in the capital comparison formula.
Cambridge 0452 Examiner Reports 2022-2024
Why it happens
Students know drawings reduce capital and instinctively deduct them from profit.
How to avoid it
In the capital comparison formula, drawings are ADDED (not deducted). Drawings reduced capital during the year, so to find what profit must have been, we add them back: Profit = Closing capital − Opening capital + Drawings − Capital introduced.
✕Applying a mark-up percentage to sales instead of cost.
Cambridge 0452 Examiner Reports 2022-2024
Why it happens
Students confuse mark-up and margin because both are percentages of gross profit.
How to avoid it
Mark-up = % of COST (base = cost). Margin = % of SALES (base = sales). Remember: Mark-Up → COST; Margin → SALES. If told 'mark-up is 20%' and sales = $60 000: cost = $60 000 × 100/120 = $50 000 (NOT 20% × $60 000).

Practice questions

Exam-style questions with step-by-step worked solutions. Try one before checking the method.

Past paper style quiz

Get a report showing which sub-topics you've nailed and which ones still need work.

Incomplete Records - Part 1

Short Study Notes in the form of Slides

Short Study Notes — Incomplete Records - Part 1

Detailed Notes

What you’ll learn

How it’s examined

1Calculate Profit Using the Capital Comparison Method (8 marks)

2Apply Mark-Up and Margin to Find Missing Figures (8 marks)

Capital Comparison Method

Gross Profit Margin

Mark-Up

Statement of Affairs

Mark-Up

Gross Profit Margin

Incomplete Records

✕Deducting drawings (or forgetting them entirely) in the capital comparison formula.

✕Applying a mark-up percentage to sales instead of cost.

Practice questions

Past paper style quiz