IGCSE Accounting: The purpose of accounting and the accounting equation (Cambridge 0452) – Revision Notes

Syllabus edition note. This resource follows the Cambridge IGCSE Accounting 0452 syllabus (and Cambridge O Level Accounting 7707, which has the same subject content for the same series) for exams in 2027, 2028 and 2029 (version 1), first examined in the March 2027 series in India and the June 2027 series elsewhere. If you sit 0452 in November 2026, you sit the 2026 syllabus (version 2), which differs: Paper 1 has 35 multiple-choice marks in 1 hour 15 minutes, not 40 marks in 1 hour 30 minutes; Topic 7 is “Accounting principles and policies”, without 7.2 Ethical considerations or 7.3 Technology and sustainability; 4.4 is “Irrecoverable debts and provision for doubtful debts”; income statements are named instead of statements of profit or loss; three-column running balance accounts are not required; Clubs and societies is 5.4 and Manufacturing accounts 5.5; and 6.3 is “Inter-firm comparison”. If you sit in November 2026, work from the 2026 syllabus on the Cambridge International website.

Condensed recall for sections 1.1 The purpose of accounting and 1.2 The accounting equation of the Cambridge IGCSE Accounting 0452 syllabus for exams in 2027, 2028 and 2029 (version 1). Full explanations are in the study guide; questions are in the practice set. Earlier overviews are the Topic 1 study guide and fundamentals revision notes. Use the course hub, the checklist and the free diagnostics to see what is left.

Paper 1 is 40 multiple-choice questions and calculators may be used. Paper 2 has five compulsory structured questions of 20 marks each. Both papers are based on all the subject content, so treat this topic as background to everything else.

1.1 Book-keeping versus accounting

	Book-keeping	Accounting
What it is	Recording transactions	Using the records to summarise, analyse and communicate
Question it answers	What happened?	What does it mean and what should we do?
Typical outputs	Entries in the books, ledger accounts	Statement of profit or loss, statement of financial position, comments, recommendations
Judgement needed	Little: follow set rules	A lot: interpret, compare, advise

One-line test: if the task is writing an entry down, it is book-keeping; if it is summarising, interpreting or advising, it is accounting.

1.1 Measuring profit and loss

Profit = income earned in the period − expenses of earning it. A negative result is a loss. The figure belongs to a stated period and appears in the statement of profit or loss.

Purposes to be able to name and apply:

• Judge whether the business is succeeding and whether the owner’s effort is rewarded.
• Decide how much the owner can take as drawings without weakening the business.
• Compare with earlier periods, with plans, or with similar businesses.
• Give lenders and tax authorities a recognised measure.
• Support decisions: pricing, cost control, expansion, closure.

Percentage change = change ÷ original × 100. Profit falling from 9,000 to 6,750 is a fall of 2,250, which is 2,250 ÷ 9,000 = 25.0% down.

1.1 Information for monitoring and decisions

Role	Meaning	Example
Monitoring progress	Comparing results with a past period or a target	Revenue up 12% but profit flat, so expenses are rising
Decision-making	Choosing between options using the facts	Do not buy a second vehicle while the bank loan is still large and profit is falling

Accounting information supports the decision. It does not make the decision, and it cannot show things that are not measured in money.

1.2 The three elements

Element	Meaning	Examples	Memory hook
Asset	Resource the business owns	Premises, equipment, inventory, trade receivables, bank, cash	Owned or owed to us
Liability	Amount the business owes outsiders	Trade payables, loan, bank overdraft	We owe it
Owner’s equity	Owner’s claim = assets − liabilities	Capital paid in + profit − drawings	What is left for the owner

Owner’s equity goes up with: capital introduced, profit. Owner’s equity goes down with: loss, drawings.

1.2 The accounting equation

Assets = Liabilities + Owner’s equity

To find	Rearrange to
Owner’s equity	Assets − Liabilities
Liabilities	Assets − Owner’s equity
Assets	Liabilities + Owner’s equity

Method for a missing figure: write the equation, put in the two known figures, solve for the third, then check by substituting back.

1.2 Effect of common transactions

Transaction	Assets	Liabilities	Owner’s equity
Owner pays in capital	Up	No change	Up
Buy equipment for cash or bank	One up, one down (total same)	No change	No change
Buy equipment on credit	Up	Up	No change
Take out a loan (cash received)	Up	Up	No change
Repay part of a loan	Down	Down	No change
Sell goods above cost, cash or credit	Up by the profit	No change	Up by the profit
Pay an expense	Down	No change	Down
Owner takes drawings	Down	No change	Down
Customer pays what is owed	One up, one down (total same)	No change	No change
Pay a supplier	Down	Down	No change

Only profit or loss, capital introduced and drawings move owner’s equity. Everything else leaves it alone.

Worked reminder: following the equation

Fernandez Tile Supplies starts with assets of 60,000, liabilities of 22,000 and so owner’s equity of 38,000 (all in dollars).

Step	Assets	Liabilities	Owner’s equity
Opening position	60,000	22,000	38,000
Buys a van for 12,000 on credit	72,000	34,000	38,000
Owner takes 1,500 cash as drawings	70,500	34,000	36,500
Repays 5,000 of a loan from the bank	65,500	29,000	36,500
Sells goods that cost 800 for 1,250 on credit	65,950	29,000	36,950
Owner pays 6,000 into the bank	71,950	29,000	42,950

Check the last line: 29,000 + 42,950 = 71,950, so the equation balances. The sale adds 450 to both assets and owner’s equity, because 1,250 − 800 = 450.

Profit from the movement in owner’s equity

Profit = closing equity − opening equity − capital introduced + drawings

Opening equity 31,200, closing equity 38,650, capital introduced 2,500, drawings 7,200: profit = 38,650 − 31,200 − 2,500 + 7,200 = 12,150.

Distinctions to keep clear

• Profit versus cash. Profit is a measure of performance over a period. Cash is one of the assets.
• Drawings versus expenses. An expense is a cost of running the business. Drawings are the owner taking value out.
• Receivables versus payables. Receivables are owed to the business (asset). Payables are owed by it (liability).
• Loan versus capital. A loan is owed to an outsider. Capital belongs to the owner.
• Overdraft versus bank balance. An overdrawn account is a liability.

Quick self-test

1. State the accounting equation.
2. Assets are 83,600 and liabilities are 29,400. Find owner’s equity.
3. Liabilities are 15,250 and owner’s equity is 40,750. Find assets.
4. Assets are 27,800 and owner’s equity is 18,300. Find liabilities.
5. Classify each as asset, liability or owner’s equity: trade receivables, bank overdraft, capital paid in by the owner.
6. A machine costing 7,400 is bought on credit. State the effect on assets, liabilities and owner’s equity.
7. The owner takes 1,500 from the bank for personal use. State the effect on each element.
8. Goods that cost 650 are sold on credit for 940. By how much do assets and owner’s equity change?
9. Opening equity 31,200, closing equity 38,650, capital introduced 2,500, drawings 7,200. Find profit.
10. Give two purposes of measuring profit.
11. Distinguish book-keeping from accounting in one sentence each.
12. Profit falls from 9,000 to 6,750. State the percentage change.

Answers

1. Assets = Liabilities + Owner’s equity.
2. 83,600 − 29,400 = 54,200.
3. 15,250 + 40,750 = 56,000.
4. 27,800 − 18,300 = 9,500.
5. Trade receivables: asset. Bank overdraft: liability. Capital paid in: owner’s equity.
6. Assets up 7,400, liabilities up 7,400, owner’s equity no change.
7. Assets down 1,500, owner’s equity down 1,500, liabilities no change.
8. Both increase by 290, because 940 − 650 = 290.
9. 38,650 − 31,200 − 2,500 + 7,200 = 12,150.
10. Any two from: judge performance, guide drawings, compare over time, inform lenders or tax calculations, support decisions.
11. Book-keeping records transactions. Accounting summarises, analyses and communicates what the records show.
12. A fall of 25.0% (2,250 ÷ 9,000 × 100).

Where marks are usually lost

• Defining accounting as “keeping the books” with no mention of analysis or communication.
• Giving a purpose of profit that is only a definition, such as “to find the profit”.
• Answers that say “to see if the business is doing well” without saying how it is then used.
• Putting drawings in the expenses when finding profit.
• Treating a bank overdraft or trade payables as assets.
• Saying a loan raises owner’s equity.
• Showing only one side of a transaction and forgetting the second change.
• Working out a percentage change against the new figure instead of the original.
• Writing figures without units or a stated period where the question asks for them.

Frequently asked questions

How is the Cambridge IGCSE Accounting 0452 exam structured? Paper 1 is 40 multiple-choice questions and calculators may be used. Paper 2 has five compulsory structured questions of 20 marks each, and both papers are based on all the subject content.

How do you calculate profit from the movement in owner’s equity? Profit = closing equity minus opening equity minus capital introduced plus drawings. For example, with opening equity of 31,200, closing equity of 38,650, capital introduced of 2,500 and drawings of 7,200, profit is 12,150.

What changes owner’s equity? Only four things: capital introduced and profit increase it, while a loss and drawings decrease it. Other transactions, such as buying an asset on credit or repaying a loan, leave owner’s equity unchanged.

What is the difference between drawings and expenses? An expense is a cost of earning income and is deducted when finding profit. Drawings are amounts the owner takes out for private use, which reduce owner’s equity directly and are not an expense.

Official syllabus

Cambridge IGCSE Accounting 0452 syllabus for exams in 2027, 2028 and 2029 (version 1), published by Cambridge University Press & Assessment (Cambridge International Education). Sections 1.1 and 1.2.