Break-Even Calculator
Find exactly how many units you need to sell to cover all costs and start making profit
Calculator Settings
Rent, salaries, insurance, loan payments, etc.
Materials, packaging, shipping per unit
Enter to see margin of safety and projected profit
Calculation Results
Please fill in all required fields to see calculation results
Complete Guide to Break-Even Analysis
What Is Break-Even Analysis?
Break-even analysis tells you the minimum sales volume needed for total revenue to equal total costs — the point where a business, product line, or project stops losing money and starts generating profit. Every unit sold beyond break-even adds pure contribution-margin profit.
It is one of the most fundamental tools in managerial accounting, used by startups validating a pricing model, CFOs launching a new SKU, and freelancers deciding whether a service offering is viable. Unlike a full Profit Margin Calculator that analyses a completed P&L, break-even analysis is forward-looking — it answers “how much do I need to sell?”
The Break-Even Formula
Break-Even Point (units):
BEP (units) = Fixed Costs ÷ (Price per Unit − Variable Cost per Unit)
BEP (revenue) = Fixed Costs ÷ Contribution Margin Ratio
Contribution Margin Ratio = (Price − Variable Cost) ÷ Price
Where: Fixed Costs = costs that do not change with output (rent, salaries, insurance); Variable Cost = cost incurred per unit produced (materials, shipping, packaging); Price = selling price per unit.
Why Break-Even Analysis Matters
Pricing Decisions
See exactly how a price change shifts the number of units you must sell. Even a small price increase can dramatically lower your break-even point.
Cost Control
Quantify how reducing fixed overhead or negotiating cheaper materials moves the break-even target. Useful when planning lease renewals or supplier contracts.
Startup Viability
Before investing capital, check whether the required sales volume is realistic for your market. Pair with an NPV Calculator to evaluate long-term project value.
Investor Communication
Investors and lenders expect break-even projections in pitch decks and loan applications. It demonstrates financial literacy and operational awareness.
Tips for Accurate Break-Even Analysis
Classify costs correctly: Rent is fixed; raw materials per unit are variable. Semi-variable costs (like electricity) should be split into fixed base + variable per-unit components for accurate results.
Test sensitivity: Run scenarios at ±10% on price and variable cost. If a 10% cost increase doubles your break-even point, your margins are dangerously thin. Use the Trade Risk Calculator mindset: quantify downside before committing capital.
Update regularly: Costs and prices shift quarterly. Re-run break-even analysis after any major cost change — new lease, supplier switch, price adjustment, or currency shift. Check the Inflation Calculator to factor in purchasing-power erosion over multi-year projections.
Common Mistakes
Ignoring Semi-Variable Costs
Electricity, maintenance, and commissions often have fixed and variable parts. Lumping them entirely into one category under- or over-states break-even by 10-20%.
Using Average Price for Multiple Products
If you sell products at different price points, a blended average can be misleading. Calculate break-even per product or use a weighted contribution margin for mixed-product analysis.
Forgetting Opportunity Cost
Break-even shows zero profit, not zero opportunity cost. You might break even but earn less than investing the same capital elsewhere. Compare with an IRR or NPV analysis to confirm the project is truly worth pursuing.
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OpenFrequently Asked Questions
What is a break-even point?
The break-even point is the number of units you must sell so that total revenue exactly equals total costs (fixed + variable). Below it you lose money; above it every additional unit generates profit equal to its contribution margin.
How is the break-even point calculated?
Break-Even Units = Fixed Costs ÷ (Selling Price per Unit − Variable Cost per Unit). The denominator is the contribution margin per unit. In revenue terms: Break-Even Revenue = Break-Even Units × Price, or equivalently Fixed Costs ÷ Contribution Margin Ratio.
What is the contribution margin ratio?
Contribution Margin Ratio = (Price − Variable Cost) ÷ Price. It tells you what fraction of each dollar of revenue goes toward covering fixed costs and profit. A 60% ratio means $0.60 of every $1 sold covers fixed costs or becomes profit.
How does this differ from the Options Breakeven Calculator?
The Options Breakeven Calculator finds the stock price at which an options trade neither gains nor loses. This tool is for general business break-even analysis — how many units of a product or service you need to sell to cover all costs. Different formulas, different use cases.
What is margin of safety and why does it matter?
Margin of Safety = (Expected Sales − Break-Even Sales) ÷ Expected Sales × 100%. It measures how far actual or projected sales can drop before you hit break-even. A 30% margin of safety means revenue can fall 30% before you start losing money — higher is safer.
Can you show a worked example?
Fixed costs = $50,000, price = $25/unit, variable cost = $10/unit. Contribution margin = $15. Break-even = 50,000 ÷ 15 = 3,334 units ($83,350 revenue). If you expect to sell 5,000 units, profit = 5,000 × $15 − $50,000 = $25,000 and margin of safety = (125,000 − 83,350) ÷ 125,000 = 33.3%.