Trace how transactions change the equation
Follow a transaction through both sides of the accounting equation rather than treating every receipt as income.
Section 1.2 · The accounting equation
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 business buys a computer for cash. Which description is best immediately after purchase?
What you will learn
- Trace simple owner investment, borrowing and asset purchases
- Explain how drawings differ from business expenses
- Check the equation after a transaction
Classify the source and the claim
An owner contribution increases an asset and owner's equity. A loan increases an asset and a liability. Buying equipment for cash exchanges one asset for another; it does not automatically create an expense at the moment of purchase.
Drawings are resources taken by the owner for private use. They reduce owner's equity and are not a business expense. A business expense is incurred in running the business and contributes to calculating profit for a period.
Keep the transaction in context
A transaction can have more than one effect. Record each affected category and verify that assets still equal liabilities plus equity.
These are equation-level effects. Later syllabus sections teach the full double-entry entries, year-end adjustments and financial statements; do not infer those detailed procedures from this introductory model.
Pause and explain
A business receives $3,000 cash from a bank loan. Which change occurs?
Worked example
An owner adds $2,500 cash. Later, the owner takes $300 cash for private use. State the change in assets and equity from each event.
Show the worked solution
- Owner contribution: cash assets rise $2,500 and equity rises $2,500.
- Drawings: cash assets fall $300 and equity falls $300.
- Net changes are assets +$2,200 and equity +$2,200; the equation stays balanced.
Answer The contribution increases assets and equity by $2,500. Drawings reduce both cash and equity by $300. Net assets and equity each rise $2,200.
Try a topic test
Choose Easy, Normal or Difficult. Save your answers and open worked review after finishing.
Test this topic →From guided practice to a new situation
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.
An owner contributes a delivery van worth $4,000 to the business. Show the immediate equation effect.
Give me a hint
The business gains a resource and the owner contributes value.
Compare my reasoning
- The van is an asset of the business.
- Owner's contribution increases equity.
- Assets and equity each rise by $4,000.
Assets +$4,000; owner's equity +$4,000; liabilities unchanged.
Look for these in your work
- Asset identified
- Equity identified
- Equation balanced
A sole trader takes $250 cash for private use. Explain why it is not recorded as a business expense in the equation.
Give me a hint
Identify who receives the cash and the purpose of the withdrawal.
Compare my reasoning
- The owner receives the cash for private use.
- The withdrawal is drawings, not a cost incurred to earn business income.
- Cash assets and owner's equity each fall by $250.
It is drawings: cash and owner's equity each decrease by $250. It is not an operating expense used to calculate business profit.
Look for these in your work
- Private purpose recognised
- Drawings named
- Asset and equity changes correct
A business buys equipment for $1,800 cash, then borrows $600 from a bank. Calculate the total asset change and liability change, assuming no other transactions.
Give me a hint
Treat the equipment purchase as an asset exchange, then add the borrowed cash and obligation.
Compare my reasoning
- Equipment purchase: equipment +1,800 and cash −1,800; total assets are unchanged.
- Loan: cash assets +600 and liabilities +600.
- Overall total assets increase by $600 and liabilities increase by $600; equity is unchanged.
Total assets increase by $600, liabilities increase by $600 and equity is unchanged. The equipment purchase only changes the form of assets; the loan adds equal cash and liability.
Look for these in your work
- Asset exchange treated correctly
- Loan effect correct
- Net equation checked
Common mistakes
- Treating a bank loan as income or owner capital
- Treating drawings as an operating expense
- Changing equity when one asset is exchanged for another
What can you explain now?
An owner takes cash for private use. Which claim is reduced?
Compare with the explanation
Owner's equity
Drawings reduce the owner's claim; they are not a business expense.
After trying it yourself, choose your next review. This is your self-assessment.
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Make it stick
Why do a loan and an owner's contribution have different effects on the claims side of the equation?
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.