Accounting Equation
Also written as: Capital = Assets β Liabilities. Must always balance.
Assets = Capital + Liabilities Cambridge O Level 7707
All key formulas for Cambridge O Level Accounting (7707) β accounting equation, income statement, balance sheet, ratio analysis and depreciation.
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Aligned with the latest 2026 syllabus and board specifications. This sheet is prepared to match your exam boardβs official specifications for the 2026 exam series.
Cambridge O Level Accounting (7707) requires accurate use of formulas and accounting structures in every paper. This sheet covers all key relationships from the syllabus β from the fundamental accounting equation through to ratio analysis β with examiner notes on presentation.
Accounting equation and double entry
Income statement and profit formulas
Balance sheet structure
Ratio analysis: profitability, liquidity, efficiency
Also written as: Capital = Assets β Liabilities. Must always balance.
Assets = Capital + Liabilities Capital introduced + net profit β drawings = closing capital.
Assets = Capital + Retained Profit + Liabilities Every transaction has an equal and opposite debit and credit entry.
Debit: Assets β, Expenses β, Drawings β
Credit: Liabilities β, Capital β, Revenue β
Or: Opening Capital + Additional Capital + Net Profit β Drawings
Closing Capital = Opening Capital + Net Profit β Drawings Also: Cost of Sales = Opening Inventory + Net Purchases (after returns and carriage) β Closing Inventory
Cost of Sales = Opening Inventory + Purchases β Closing Inventory Gross Profit = Revenue β Cost of Sales Other income: rent received, commission received, discount received.
Net Profit = Gross Profit + Other Income β Expenses Net Purchases = Purchases + Carriage Inwards β Returns Outwards Net Sales = Sales β Returns Inwards (Sales Returns) Non-current assets: land, buildings, machinery, vehicles, equipment
Current assets: inventory, trade receivables, bank, cash
Current liabilities: trade payables, bank overdraft, accruals
Non-current liabilities: long-term loans, mortgages
Working Capital = Current Assets β Current Liabilities Net assets must equal total equity (capital).
Net Assets = Total Assets β Total Liabilities Residual value = estimated scrap value at end of useful life. Same amount every year.
Annual Depreciation = (Cost β Residual Value) / Useful Life (years) Net Book Value (NBV) = Cost β Accumulated Depreciation. Higher depreciation in early years.
Depreciation = Net Book Value Γ Rate (%) NBV = Cost β Accumulated Depreciation Positive = profit on disposal. Negative = loss on disposal.
Profit/Loss = Proceeds from sale β Net Book Value at date of disposal Always state the formula, calculate, and interpret β one mark for each.
Higher = better. Shows profit after cost of sales only.
Gross Profit Margin = (Gross Profit / Revenue) Γ 100% Higher = better. Includes all expenses.
Net Profit Margin = (Net Profit / Revenue) Γ 100% Capital Employed = Total Assets β Current Liabilities (or Equity + Non-current Liabilities).
ROCE = (Net Profit / Capital Employed) Γ 100% Ideal: approximately 2:1. Above 1 = able to meet short-term obligations.
Current Ratio = Current Assets / Current Liabilities Ideal: approximately 1:1. Excludes inventory as it may not convert quickly to cash.
Quick Ratio = (Current Assets β Inventory) / Current Liabilities Lower = faster collection. Compare over time or to industry average.
Trade Receivables Days = (Trade Receivables / Revenue) Γ 365 Higher = longer to pay suppliers (may strain relationships).
Trade Payables Days = (Trade Payables / Cost of Sales) Γ 365 Higher = inventory selling faster. Average Inventory = (Opening + Closing) / 2.
Inventory Turnover = Cost of Sales / Average Inventory Opening balance + Credit sales + Dishonoured cheques
β Cash received β Discounts allowed β Returns inwards β Bad debts = Closing balance
Opening balance + Credit purchases
β Cash paid β Discounts received β Returns outwards = Closing balance
Balance per bank statement Β± Timing differences = Adjusted bank balance
+ Outstanding deposits β Unpresented cheques
Boost your Cambridge exam confidence with these proven study strategies from our tutoring experts.
Every journal entry affects two accounts. Check that Assets = Capital + Liabilities after every transaction.
Three marks for a ratio question: state the formula (1 mark), correct calculation (1 mark), meaningful interpretation (1 mark). Don't skip the interpretation.
Straight-line: same amount every year. Reducing balance: same percentage but decreasing amount. Know which method the question specifies.
Revenue β Cost of Sales β Gross Profit β Other Income β Expenses β Net Profit. Examiners deduct marks for wrong order or missing lines.
Quick answers about this free PDF and how to use it for exam revision and active recall.
Yes. This Tutopiya formula sheet is free to use and you can download it as a PDF from this page for offline revision. There is no payment or account required for the PDF download.
This page groups key Accounting formulas in one place for revision. Complete formula reference for Cambridge O Level Accounting (7707). Key formulas for the accounting equation, income statement, balance sheet, ratio analysis and depreciation with O Level exam tips. Always cross-check with your official syllabus and past papers for your exam session.
No. In the exam you must follow only what your exam board allows in the hallβusually the official formula booklet or data sheet where provided. This page is a revision and teaching aid, not a replacement for board-issued materials.
It is written for students preparing for assessments at Secondary in Accounting, including classroom revision, homework support, and independent study. Teachers and tutors can also share it as a quick reference.
Work through past paper questions, quote the correct formula before substituting values, and check units and notation every time. Pair this sheet with timed practice and mark schemes so you see how examiners expect working to be set out.
Explore Tutopiyaβs study tools, past paper finder, and revision checklists linked from our tools hub, or book a trial lesson with a subject specialist for personalised support alongside this formula reference.
Work through double entry, financial statements and ratio analysis with a specialist O Level Accounting tutor.
Pair this formula sheet with past papers, revision checklists, and planners β all free on our study tools hub.
This formula sheet aligns with Cambridge O Level Accounting (7707) syllabus content.
Ratio formulas may have minor variations in different textbooks β always use the formula as presented in the Cambridge 7707 mark scheme.