Revenue Streams
Total Revenue (TR)
TR = Selling Price × Quantity Sold Average Revenue (AR)
AR = TR / Quantity Cambridge IGCSE 0450 / 0986
All the Cambridge Business Studies financial and operational calculations you need, organised topic by topic for quick revision.
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Aligned with the latest 2026 syllabus and board specifications. This sheet is prepared to match your exam board’s official specifications for the 2026 exam series.
Cambridge exams love data-driven questions. Use this formula sheet to calculate costs, profits, ratios, productivity and HR metrics accurately, then pair them with your business analysis for top marks.
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State currency and time period when presenting each figure.
Total Revenue (TR)
TR = Selling Price × Quantity Sold Average Revenue (AR)
AR = TR / Quantity Total Cost (TC)
TC = Fixed Costs + Variable Costs Average Cost (AC)
AC = TC / Quantity Average Fixed Cost (AFC)
AFC = Fixed Costs / Quantity Average Variable Cost (AVC)
AVC = Variable Costs / Quantity Profit
Profit = TR − TC Gross Profit
Gross Profit = Sales Revenue − Cost of Sales Net Profit
Net Profit = Gross Profit − Expenses Contribution per Unit
Contribution = Selling Price − Variable Cost per unit Total Contribution
Total Contribution = Contribution per unit × Quantity Break-even Output
Break-even = Fixed Costs / Contribution per unit Margin of Safety
Margin of Safety = Actual Output − Break-even Output Ratios should be expressed as percentages or ratios depending on syllabus guidance.
Capital Employed = Long-term liabilities + Shareholders' funds.
Gross Profit Margin
Gross Profit Margin = (Gross Profit / Sales Revenue) × 100% Net Profit Margin
Net Profit Margin = (Net Profit / Sales Revenue) × 100% Return on Capital Employed (ROCE)
ROCE = (Net Profit / Capital Employed) × 100% Aim for 1.5:1 (current ratio) and at least 1:1 (acid test) for exam evaluation.
Current Ratio
Current Ratio = Current Assets / Current Liabilities Acid Test Ratio
Acid Test = (Current Assets − Inventory) / Current Liabilities Average Inventory = (Opening Inventory + Closing Inventory) / 2.
Inventory Turnover = Cost of Goods Sold / Average Inventory Receivables Days
Receivables Days = (Trade Receivables / Credit Sales) × 365 Payables Days
Payables Days = (Trade Payables / Credit Purchases) × 365 Market Size (value)
Market Size = Total Market Sales × Average Price Market Size (volume)
Market Size = Total units sold in the market Market Share
Market Share = (Firm's Sales / Total Market Sales) × 100% Mark-up Percentage
Mark-up = ((Selling Price − Cost) / Cost) × 100% Margin Percentage
Margin = ((Selling Price − Cost) / Selling Price) × 100% Price Elasticity of Demand
PED = (% Δ in quantity demanded) / (% Δ in price) Use to predict impact of price changes on revenue.
Average Annual Profit = Total profit over project ÷ number of years.
ARR (%) = (Average Annual Profit / Initial Investment) × 100 Time taken for cumulative cash inflow to equal initial investment.
No formal formula; subtract annual inflows until investment is recovered, then compute remainder as a proportion of the next year's inflow.
Labour Productivity
Labour Productivity = Output / Number of Employees Output per Machine
Output per Machine = Total Output / Number of Machines Capacity Utilisation
Capacity Utilisation (%) = (Actual Output / Maximum Possible Output) × 100 Defect Rate
Defect Rate (%) = (Number of Defective Units / Total Units Produced) × 100 Labour Turnover
Labour Turnover (%) = (Number of Staff Leaving / Average Number of Staff Employed) × 100 Absenteeism Rate
Absenteeism (%) = (Number of Days Lost / Total Possible Working Days) × 100 Labour Cost per Unit
Labour Cost per Unit = Total Labour Cost / Number of Units Produced Working Capital
Working Capital = Current Assets − Current Liabilities Net Cash Flow
Net Cash Flow = Cash Inflow − Cash Outflow Closing Cash Balance
Closing Balance = Opening Balance + Net Cash Flow Boost your Cambridge exam confidence with these proven study strategies from our tutoring experts.
Always show formula, substitution and final answer. Label currency and percentage signs to gain method marks even if the final number slips.
Follow every calculation with a short explanation of what the figure means for the business to score on analysis and evaluation.
Recreate common exam tables (cash flow, break-even) from memory to improve speed and accuracy under timed conditions.
Organise formulas by finance, marketing, operations and HR so you quickly select the right one in scenario-based questions.
Quick answers about this free PDF, how to use it for exam revision, and how it relates to your official syllabus.
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 Business Studies formulas in one place for revision. Essential Cambridge IGCSE Business Studies (0450/0986) formulas for 2026 exams. Covers finance, marketing, operations and HR calculations with exam-ready notes. 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 hall—usually 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 Business Studies, 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 Tutopiya’s 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.
Practice Cambridge-style structured and case study questions with targeted feedback from Tutopiya tutors. We focus on balancing accurate calculations with strong business analysis.
Pair this formula sheet with past papers, revision checklists, and planners — all free on our study tools hub.
Aligned with Cambridge Assessment International Education IGCSE Business Studies (0450/0986) syllabus content for 2026.
Double-check whether questions require percentages, ratios or raw numbers, and explain what each outcome means for the business context provided.