O Level Accounting 7707 — the whole syllabus, free.
A complete study guide for Cambridge O Level Accounting 7707 (formerly Principles of Accounts), mapped to all 28 sub-topics of the official syllabus for exams in 2027–2029.
How to use it: Accounting is the most procedural subject at O Level — the same layouts and rules recur every paper. Learn the double-entry rule and the statement formats until they are automatic, then practise until speed follows. Every unit has a worked example set out exactly as the exam expects.
📄 7 plain-English chapter handouts →✎ Practice & self-test →
The papers
| Paper | Format | Time / marks | Weight |
|---|---|---|---|
| Paper 1 — Multiple Choice | 40 multiple-choice questions | 1 h 30 min · 40 marks | 30% |
| Paper 2 — Structured Written Paper | Five compulsory questions | 1 h 45 min · 100 marks | 70% |
Assessment objectives: AO1 Knowledge and understanding 66%, AO2 Analysis 24%, AO3 Evaluation 10%. This is a knowledge- and technique-heavy subject: accuracy of layout and method matters more than argument.
Double entry — quick reference
Debit the account that receives value (or where an asset or expense increases). Credit the account that gives value (or where a liability, capital or income increases).
| Account type | Increase | Decrease |
|---|---|---|
| Asset (machinery, inventory, bank, receivables) | Debit | Credit |
| Expense (rent, wages, insurance) | Debit | Credit |
| Liability (loan, payables) | Credit | Debit |
| Capital | Credit | Debit |
| Income (sales, rent received) | Credit | Debit |
A memory aid: DEAD CLIC — Debit Expenses, Assets, Drawings; Credit Liabilities, Income, Capital.
Record these transactions: (a) the owner pays $20 000 into the business bank account; (b) goods bought on credit from Khan for $3000; (c) rent paid by cheque $800; (d) goods sold for cash $1200.
| Transaction | Debit | Credit |
|---|---|---|
| (a) Owner invests $20 000 | Bank $20 000 (asset up) | Capital $20 000 |
| (b) Credit purchase $3000 | Purchases $3000 | Khan (payable) $3000 (liability up) |
| (c) Rent paid $800 | Rent $800 (expense up) | Bank $800 |
| (d) Cash sales $1200 | Cash $1200 | Sales $1200 (income up) |
The fundamentals of accounting
1.1The purpose of accounting 1.2The accounting equation
Purposes: to record transactions accurately, to calculate profit or loss, to show the financial position of the business, to help owners make decisions and control the business, and to provide information for other interested parties.
(and therefore Capital = Assets − Liabilities)
Every transaction keeps the equation in balance — that is exactly why double entry works.
A business has assets of $85 000 and liabilities of $32 000. Find the capital. The owner then introduces a further $10 000 cash. Show the effect.
- Capital = Assets − Liabilities = 85 000 − 32 000 = $53 000
- New cash raises assets to $95 000 and capital to $63 000; liabilities unchanged at $32 000
- Check: 95 000 = 63 000 + 32 000 ✓ — the equation still balances
Skill check: A business buys a vehicle for $12 000 on credit. State the effect on assets, liabilities and capital.
Sources and recording of data
2.1The double entry system of book-keeping
Entries are made in ledger accounts, traditionally in "T" format with debits on the left and credits on the right. The ledger is divided into:
| Division | Contains |
|---|---|
| Sales ledger | Personal accounts of credit customers (trade receivables) |
| Purchases ledger | Personal accounts of credit suppliers (trade payables) |
| Nominal (general) ledger | All other accounts — income, expenses, assets, capital |
Balancing an account: total both sides, insert the balancing figure as "Balance c/d" on the smaller side, total both sides to the same figure, and bring the balance down as "Balance b/d" on the opposite side below the totals.
Understand also the treatment of discounts: a cash (settlement) discount is for prompt payment and is recorded in the accounts (discount allowed is an expense, discount received is income); a trade discount is a reduction off the list price and is never recorded — the transaction is simply entered at the net figure.
2.2Business documents 2.3Books of prime entry
| Document | Purpose | Recorded in |
|---|---|---|
| Invoice | Requests payment for goods sold on credit | Sales journal / purchases journal |
| Credit note | Issued for returns or overcharges | Sales returns / purchases returns journal |
| Debit note | Request to a supplier for a credit note | — |
| Statement of account | Summary of a customer's transactions for the month | — |
| Cheque counterfoil / receipt | Evidence of payment made or received | Cash book |
| Book of prime entry | Records |
|---|---|
| Sales journal | Credit sales |
| Purchases journal | Credit purchases |
| Sales returns journal | Goods returned by customers |
| Purchases returns journal | Goods returned to suppliers |
| Cash book | All receipts and payments (it is both a book of prime entry and a ledger account) |
| Petty cash book | Small cash payments, usually on the imprest system |
| General journal | Everything else: opening entries, purchase/sale of non-current assets on credit, corrections of errors, year-end transfers |
Verification of accounting records
3.1The trial balance
A trial balance lists every ledger balance at a date, in debit and credit columns. Its purposes: to check the arithmetical accuracy of the double entry, and to provide a starting point for the financial statements.
Which side? Debit balances: assets, expenses, drawings, purchases, returns inwards. Credit balances: capital, liabilities, income, sales, returns outwards, provisions and allowances.
3.2Correction of errors
| Errors NOT revealed by the trial balance | Meaning |
|---|---|
| Omission | A transaction completely left out of the books |
| Commission | Correct amount, correct side, but in the wrong person's account of the same type |
| Principle | Entered in the wrong class of account (e.g. a machine debited to Repairs) |
| Original entry | The wrong amount entered on both sides |
| Complete reversal | The correct amount, but debit and credit the wrong way round |
| Compensating | Two errors of equal value on opposite sides that cancel out |
Errors that do affect agreement (one-sided errors, wrong additions, an entry on the wrong side) are corrected through a suspense account, which is opened for the difference and closed once all corrections are posted.
A machine costing $5000 was debited to the Repairs account. Correct the error and state its type.
- Type: error of principle — capital expenditure treated as revenue expenditure.
- Correcting journal entry: Debit Machinery $5000, Credit Repairs $5000.
- Effect on profit: repairs were overstated by $5000, so profit was understated by $5000; correcting it increases profit by $5000, and non-current assets rise by $5000.
3.3Bank reconciliation
The cash book balance and the bank statement balance differ because of timing differences and items the business does not yet know about.
- Update the cash book for items on the statement that are not yet in the books: bank charges, interest, direct debits and standing orders, credit transfers received, dishonoured cheques, and any errors made by the business.
- Prepare the reconciliation statement for timing differences and bank errors:
updated cash book balance + uncredited deposits (lodgements not yet on the statement) − unpresented cheques = bank statement balance.
The cash book shows $4200 debit. Bank charges of $150 have not been recorded. Unpresented cheques total $900 and deposits not yet credited total $1300. Prepare the reconciliation.
- Updated cash book = 4200 − 150 = $4050
- Reconciliation: 4050 + 1300 (uncredited deposits) − 900 (unpresented cheques) = $4450 per the bank statement
3.4Control accounts
A sales ledger control account summarises all transactions with credit customers; a purchases ledger control account does the same for credit suppliers. Their balances should equal the total of the individual accounts in that ledger — providing a check on accuracy and helping to locate errors quickly.
| Sales ledger control account | |
|---|---|
| Debit side (increases owed to us) | Opening balance, credit sales, dishonoured cheques, interest charged |
| Credit side (reductions) | Receipts from customers, discount allowed, sales returns, irrecoverable debts written off, contra/set-off |
Opening trade receivables $18 000; credit sales $95 000; receipts from customers $88 000; sales returns $2500; discount allowed $1200; irrecoverable debts written off $800. Find the closing balance.
- Debits: 18 000 + 95 000 = 113 000
- Credits: 88 000 + 2500 + 1200 + 800 = 92 500
- Closing balance = 113 000 − 92 500 = $20 500
Digital recording reduces arithmetical errors and produces control account totals automatically, but the principle of checking remains — data entry errors and fraud are still possible.
Accounting procedures
4.1Capital and revenue expenditure and receipts
| Capital | Revenue | |
|---|---|---|
| Expenditure | Buying or improving a non-current asset, plus the costs of getting it ready for use (delivery, installation, legal fees). Shown in the statement of financial position. | Day-to-day running costs — repairs, fuel, wages, insurance. Shown in the income statement. |
| Receipts | From selling a non-current asset, or from capital introduced or a loan received | From normal trading — sales, rent received, commission received |
4.2Depreciation and disposal of non-current assets
Causes: physical wear and tear, passage of time, obsolescence, and depletion.
| Method | Calculation | Suits |
|---|---|---|
| Straight line | (cost − residual value) ÷ useful life, or a fixed % of cost | Assets used evenly, e.g. buildings, fixtures |
| Reducing balance | A fixed % of the net book value each year | Assets losing value fastest early on, e.g. vehicles, IT |
| Revaluation | Value at start + purchases − value at end | Many small items, e.g. loose tools |
A machine costs $20 000 with a residual value of $2000 and a useful life of 4 years. Compare straight line with reducing balance at 25%.
- Straight line: (20 000 − 2000) ÷ 4 = $4500 per year, every year.
- Reducing balance at 25%: Year 1 = 25% × 20 000 = $5000 (NBV $15 000); Year 2 = 25% × 15 000 = $3750 (NBV $11 250); Year 3 = 25% × 11 250 = $2812.50 (NBV $8437.50).
- Reducing balance charges more in early years, which better matches assets that lose value quickly.
A vehicle costing $16 000 with accumulated depreciation of $11 000 is sold for $4000. Calculate the profit or loss on disposal.
- Net book value = 16 000 − 11 000 = $5000
- Proceeds $4000 − NBV $5000 = loss on disposal of $1000, charged to the income statement
- Entries: debit Disposal with cost, credit Disposal with accumulated depreciation and with proceeds; the balance is the profit or loss.
4.3Other payables and other receivables
A prepaid expense (other receivable) is paid in advance for a future period — subtract it from the expense and show it as a current asset.
Rent paid during the year was $11 000. Rent owing at the year end is $1500; there was a prepayment of $800 at the start of the year. Find the charge to the income statement.
- Start with cash paid: $11 000
- Add the opening prepayment (it relates to this year): + $800
- Add the closing accrual (this year's expense, unpaid): + $1500
- Charge to income statement = $13 300; the $1500 also appears as an other payable under current liabilities.
4.4Irrecoverable debts and allowance for irrecoverable debts
An irrecoverable debt (bad debt) is one the business is certain it will not collect — write it off: debit Irrecoverable debts, credit the customer's account. A recovery of a debt previously written off is credited to income.
Only the change in the allowance goes to the income statement: an increase is an expense; a decrease is added to income. The full allowance is deducted from trade receivables in the statement of financial position.
Trade receivables at the year end are $40 000 after writing off $1000 of irrecoverable debts. The allowance is to be 3% of receivables; last year's allowance was $900. Show the treatment.
- Required allowance = 3% × 40 000 = $1200
- Increase in allowance = 1200 − 900 = $300 → charged as an expense in the income statement
- Income statement also shows the $1000 irrecoverable debts written off
- Statement of financial position: trade receivables 40 000 − 1200 = $38 800
4.5Valuation of inventory
Inventory item A cost $5000 and could be sold for $7000. Item B cost $3000 but is damaged; it can be sold for $2600 after $300 of repairs. Value the inventory.
- A: cost $5000 vs NRV $7000 → take the lower = $5000
- B: cost $3000 vs NRV = 2600 − 300 = $2300 → take the lower = $2300
- Total inventory value = $7300
Effect of an error: overvaluing closing inventory overstates profit for the year (cost of sales is understated) and overstates current assets — and it then understates next year's profit, because closing inventory becomes next year's opening inventory.
Preparation of financial statements
5.1Sole traders
Revenue $120 000; opening inventory $8000; purchases $70 000; closing inventory $10 000; expenses $25 000. Calculate gross profit and profit for the year.
- Cost of sales = 8000 + 70 000 − 10 000 = $68 000
- Gross profit = 120 000 − 68 000 = $52 000
- Profit for the year = 52 000 − 25 000 = $27 000
5.2Partnerships
A partnership agreement sets out profit-sharing ratios, salaries, interest on capital and interest on drawings. Without an agreement, the default is that profits and losses are shared equally with no salaries or interest.
Profit for the year is $60 000. A and B share profits 3 : 2. A receives a salary of $10 000; interest on capital is $4000 for A and $3000 for B. Show the appropriation.
- Profit available: 60 000 − 10 000 (salary) − 4000 − 3000 (interest) = $43 000 residual
- A's share = 3/5 × 43 000 = $25 800; B's share = 2/5 × 43 000 = $17 200
- Total credited to A = 10 000 + 4000 + 25 800 = $39 800; to B = 3000 + 17 200 = $20 200
- Check: 39 800 + 20 200 = 60 000 ✓
5.3Limited companies
| Term | Meaning |
|---|---|
| Ordinary shares | Carry voting rights; dividends vary with profit; paid last |
| Preference shares | Fixed rate of dividend, paid before ordinary shareholders; usually no votes |
| Debentures | Long-term loans, not shares. Interest is an expense in the income statement and must be paid whether or not there is profit |
| Retained earnings | Accumulated profits not distributed as dividends |
| General reserve | Profit transferred and set aside for future use |
5.4Manufacturing accounts
Opening raw materials $6000; purchases of raw materials $34 000; closing raw materials $5000; direct labour $22 000; factory overheads $15 000; opening work in progress $3000; closing work in progress $4000. Find prime cost and cost of production.
- Direct materials consumed = 6000 + 34 000 − 5000 = $35 000
- Prime cost = 35 000 + 22 000 = $57 000
- Cost of production = 57 000 + 15 000 + 3000 − 4000 = $71 000
5.5Clubs and societies
| Business term | Club equivalent |
|---|---|
| Income statement | Income and expenditure account |
| Profit / loss for the year | Surplus / deficit of income over expenditure |
| Capital | Accumulated fund |
| Cash book summary | Receipts and payments account |
Subscriptions are the classic difficulty: only the amount relating to the current year goes to the income and expenditure account. Subscriptions received in advance are a liability; subscriptions owing (in arrears) are an asset. Trading activities such as a refreshment bar are shown separately, with only the profit transferred to the income and expenditure account.
5.6Incomplete records
- Profit from capital: profit = closing capital − opening capital + drawings − capital introduced.
- Missing figures from control accounts: reconstruct the sales or purchases ledger control account to find credit sales or credit purchases.
- Using margins and mark-ups: to find missing sales, purchases or inventory figures.
A trader's capital was $30 000 at the start and $46 000 at the end of the year. Drawings were $12 000 and capital introduced was $5000. Calculate the profit.
- Profit = closing capital − opening capital + drawings − capital introduced
- = 46 000 − 30 000 + 12 000 − 5000 = $23 000
Cost of sales is $40 000 and the business uses a mark-up of 25%. Find revenue and gross profit.
- Gross profit = 25% × 40 000 = $10 000
- Revenue = 40 000 + 10 000 = $50 000
- (Note the margin here is 10 000 ÷ 50 000 = 20% — mark-up and margin are not the same.)
Every ratio formula
6.1Calculating ratios 6.2Interpretation
| Ratio | Formula | What a change suggests |
|---|---|---|
| Gross profit margin (%) | (gross profit ÷ revenue) × 100 | Falling → selling prices cut, or cost of sales risen (supplier prices, theft, wrong inventory valuation) |
| Mark-up (%) | (gross profit ÷ cost of sales) × 100 | The same information expressed on cost rather than on revenue |
| Profit margin (%) | (profit for the year ÷ revenue) × 100 | Falling while gross margin steady → expenses have risen |
| Return on capital employed (%) | (profit before interest ÷ capital employed) × 100 capital employed = issued shares + reserves + non-current liabilities | How efficiently the capital invested generates profit; compare with interest rates and with other firms |
| Current (working capital) ratio | current assets ÷ current liabilities | Too low → may not meet short-term debts; too high → cash or inventory used unproductively |
| Acid test (liquid) ratio | (current assets − inventory) ÷ current liabilities | Liquidity ignoring inventory, which may be slow to sell |
| Rate of inventory turnover (times) | cost of sales ÷ average inventory | Higher → stock sells faster; falling → obsolete or overstocked goods |
| Inventory turnover (days) | (average inventory ÷ cost of sales) × 365 | Average days stock is held |
| Trade receivables turnover (days) | (trade receivables ÷ credit sales) × 365 | Rising → customers paying more slowly; credit control weakening |
| Trade payables turnover (days) | (trade payables ÷ credit purchases) × 365 | Rising → taking longer to pay suppliers; may risk losing discounts or goodwill |
Revenue $250 000; cost of sales $150 000; profit for the year $40 000; capital employed $200 000; average inventory $25 000; trade receivables $30 000 (all sales on credit); current assets $70 000; current liabilities $35 000. Calculate and interpret.
- Gross profit = 250 000 − 150 000 = $100 000 → gross margin = 40%
- Profit margin = 40 000 ÷ 250 000 × 100 = 16%
- ROCE = 40 000 ÷ 200 000 × 100 = 20% — a strong return versus bank interest
- Current ratio = 70 000 ÷ 35 000 = 2 : 1 — healthy liquidity
- Rate of inventory turnover = 150 000 ÷ 25 000 = 6 times a year (about every 61 days)
- Trade receivables turnover = 30 000 ÷ 250 000 × 365 = 44 days — slow if the stated credit period is 30 days, so credit control should be tightened
6.3Inter-business comparison 6.4Interested parties 6.5Limitations
Comparisons are only meaningful between businesses of similar size, in the same industry, using similar accounting policies, and for the same time period.
| Interested party | What they want to know |
|---|---|
| Owners / shareholders | Profitability and return on their investment |
| Managers | Performance, to plan and control |
| Banks and lenders | Liquidity and ability to repay |
| Suppliers | Whether they will be paid, and how quickly |
| Customers | Whether the business will continue supplying them |
| Employees | Job security and prospects for pay rises |
| Government / tax authorities | Tax payable and compliance |
Limitations of accounting statements: figures are historical and may not indicate the future; they ignore non-financial factors (staff skill, reputation, location, competition); different accounting policies (such as depreciation method) make comparison difficult; inflation distorts figures over time; and one year's figures may be untypical.
Accounting concepts, ethics and technology
7.1Accounting concepts
| Concept | Meaning | Applied in |
|---|---|---|
| Business entity | The business is separate from its owner | Drawings recorded separately from expenses |
| Consistency | The same accounting treatment is used each year | Keeping the same depreciation method |
| Duality | Every transaction has two effects | Double entry itself |
| Going concern | The business will continue for the foreseeable future | Assets valued at cost, not break-up value |
| Historic cost | Assets recorded at their original cost | Non-current assets in the statement of financial position |
| Matching (accruals) | Income and expenses recorded in the period they relate to, not when cash moves | Accruals, prepayments, depreciation |
| Materiality | Small items need not be treated strictly | Writing off a cheap stapler rather than depreciating it |
| Money measurement | Only items measurable in money are recorded | Staff loyalty and reputation are excluded |
| Prudence | Do not overstate profits or assets; provide for foreseeable losses | Allowance for irrecoverable debts; inventory at lower of cost and NRV |
| Realisation | Revenue is recognised when the goods or services change hands, not when cash is received | Credit sales recorded at the date of sale |
7.2Ethical considerations 7.3Technology and sustainability
Ethical principles for accountants: integrity (honest and straightforward), objectivity (no bias or undue influence), professional competence and due care (keeping skills current and working carefully), confidentiality (not disclosing client information), and professional behaviour (complying with laws and avoiding anything that discredits the profession).
Why it matters: financial statements are relied on by lenders, investors, employees and tax authorities. Manipulating figures — overvaluing inventory, hiding liabilities, recording fictitious sales — misleads those users, can amount to fraud, and destroys trust in the business and the profession.
| Technology in accounting — benefits | Risks and limitations |
|---|---|
| Faster and more accurate processing; automatic totals and control accounts; instant reports; less physical storage; easier back-up and remote access; automatic ratio calculation | Cost of systems and training; risk of data loss, hacking or fraud; errors in data entry still produce wrong results; staff may need retraining or become redundant; dependence on power and internet |
Sustainability increasingly affects accounting: businesses report on environmental and social impact alongside financial results, reduce paper through digital records, and consider the long-term costs of environmental damage. This gives users a fuller picture than profit alone.
Skill check: A manager asks the accountant to value closing inventory above cost so that reported profit looks better before a loan application. Explain which ethical principles are breached and the likely consequences.
Study planner & progress
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Free past papers & how to revise
Official (free)
- Cambridge International — 7707 subject page: syllabus, specimen papers, past papers, mark schemes and examiner reports.
- Examiner reports name the exact questions candidates got wrong each series — read them for every paper you attempt.
Free archives
- GCE Guide · PastPapers.co — full CAIE past-paper archives.
- Physics & Maths Tutor — topic-sorted questions.
How to revise this subject
- Master the double-entry rule first. Everything else — ledgers, trial balance, control accounts, corrections — depends on it. Drill it until it is instant.
- Learn the statement formats by writing them out blank, from memory, once a week: income statement, statement of financial position, appropriation account.
- Do full questions to time. Paper 2 is 100 marks in 105 minutes — roughly a mark a minute, so speed of layout matters as much as understanding.
- Always show workings in brackets or a clearly labelled note. Method marks survive an arithmetic slip.
- For ratio questions, always interpret, don't just calculate: say whether the figure has improved or worsened, and give a plausible reason.