How to Calculate Your Break-Even Point (Step by Step)

Published by MyBreakeven. Report a calculation or content issue to support@mybreakeven.com.

Published September 23, 2026 · Updated October 1, 2026

Learn how to calculate break-even point with formulas, clear steps, and realistic examples for pricing, costs, units, and practical profit planning.

Break-Even Concepts · Financial Planning · Small Business

To calculate your break-even point, divide total fixed costs by the contribution margin per unit: Break-even units = Fixed costs ÷ (Selling price per unit − Variable cost per unit). The result tells you how many units you must sell before your revenue covers your costs and your profit reaches zero.

The direct answer

Quick answer

Add the costs that stay the same, subtract per-unit costs from your selling price, and divide. If monthly fixed costs are $4,000, price is $50, and variable cost is $20, your contribution margin is $30 and your break-even point is 134 units after rounding up.

The formula works because each sale first pays its variable cost. The amount left, called the contribution margin, helps pay fixed costs. Once all fixed costs are covered, each additional sale contributes to operating profit, assuming the underlying prices and costs stay unchanged.

Use these formulas:

• Contribution margin per unit = Selling price per unit − Variable cost per unit
• Break-even point in units = Fixed costs ÷ Contribution margin per unit
• Break-even point in sales dollars = Fixed costs ÷ Contribution margin ratio
• Contribution margin ratio = Contribution margin per unit ÷ Selling price per unit

For a quick unit calculation, keep the time period consistent. If your fixed costs are monthly, use monthly sales and monthly variable costs. If you want a quarterly answer, use quarterly figures instead.

What changes the answer

The result changes whenever one of the inputs changes. Your selling price affects the contribution margin directly. A higher price usually lowers the number of units needed to break even, while a lower price usually raises it. However, a price change can also affect demand, so the formula does not predict how many customers will buy.

Variable cost is the cost that rises with each sale. Product materials, packaging, payment processing fees, sales commissions, and delivery costs may belong here, depending on your business. If a cost applies to every unit, include it in the per-unit variable cost rather than hiding it in overhead.

Fixed costs do not change with each individual sale during the period you are analyzing. Rent, base software subscriptions, insurance, and salaried administrative costs may be fixed for a particular plan. A cost can be fixed for one range of activity and change after you grow, so review your assumptions when your volume changes substantially.

The mix of products also matters. If you sell several products with different prices and margins, there is no single unit answer unless you assume a sales mix. A product with a high price is not automatically more profitable. Compare the contribution margin each item creates after its variable costs.

Taxes, financing, owner pay, and one-time purchases require a choice. Decide whether your break-even analysis is for operating costs only or for a broader cash target. Then include the costs that match that purpose. Do not mix annual costs with monthly revenue or count the same cost twice.

For sales dollars, convert the unit margin into a ratio. Suppose a product sells for $80 and has $32 of variable cost. The contribution margin is $48, and the contribution margin ratio is 60% because $48 ÷ $80 = 0.60. If fixed costs are $6,000, sales-dollar break-even is $6,000 ÷ 0.60 = $10,000.

2-3 realistic worked scenarios

Scenario 1: A house-cleaning service

Imagine you charge $180 for a standard cleaning. Supplies, travel, and payment fees average $45 per job. Your monthly fixed costs, including insurance, scheduling software, phone service, and other overhead, total $2,700.

First find the contribution margin: $180 − $45 = $135 per job. Next divide fixed costs by that margin: $2,700 ÷ $135 = 20 jobs. Your break-even point is 20 cleanings per month. At 21 jobs, the simple model shows $135 of operating profit before any costs not included in the assumptions.

If you are still deciding what to charge, read this guide to worked break-even analysis example. Pricing and break-even planning should be considered together because a price that looks attractive may leave too little margin after job costs.

Scenario 2: A small food business

Suppose an average restaurant order is $24. Ingredients, packaging, and order-related fees total $9 per order. Monthly fixed costs are $12,000. The contribution margin is $24 − $9 = $15.

Now calculate $12,000 ÷ $15 = 800 orders. The business must generate 800 orders per month to cover the listed fixed and variable costs. If it operates 25 days per month, that is 32 orders per operating day, because 800 ÷ 25 = 32.

A menu with different item margins can make the average order assumption unreliable. You can use a realistic average only if it reflects the products customers actually buy. For related planning, see this break-even formulas for units and sales, then update the average price and variable cost in your own model.

Scenario 3: A handmade product sold online

A maker sells a product for $42. Materials and packaging cost $14, and transaction and fulfillment fees average $7 per sale. Monthly fixed costs are $1,890 for workspace, software, insurance, and other recurring overhead.

The variable cost is $14 + $7 = $21. The contribution margin is $42 − $21 = $21. Break-even units equal $1,890 ÷ $21 = 90 units. The maker must sell 90 units per month to break even under these assumptions. Revenue at that point is 90 × $42 = $3,780, while variable costs are 90 × $21 = $1,890; the remaining $1,890 covers fixed costs.

These scenarios use the same method even though the businesses are different. The important work is classifying costs correctly and choosing a time period that matches your decision.

A monthly business break-even target you can actually deliver

Break-even business planning needs a defined service unit, costs for the same period and a capacity check. Consider an invented owner-operated cleaning service. Each standard job sells for $180. Supplies, paid job labor, travel and payment fees total $80 per job, so contribution is $180 − $80 = $100. Monthly overhead, including the stated owner-pay budget, is $4,250. All figures are illustrative USD inputs.

Required jobs are $4,250 ÷ $100 = 42.5, rounded up to 43. At 42 jobs, contribution is $4,200 and the plan is $50 short. At 43, revenue is $7,740, variable costs are $3,440 and the result after the listed overhead is $7,740 − $3,440 − $4,250 = $50.

The contribution ratio is $100 ÷ $180 = 55.56% after display rounding. Using its unrounded value, continuous sales-dollar break-even is $4,250 ÷ (100 ÷ 180) = $7,650. Whole-job sales must instead reach $7,740. Both answers are valid, but they describe different rounding boundaries.

The profit target calculation is ($4,250 + $1,000) ÷ $100 = 52.5, rounded up to 53 jobs. The target profit formula covers the distinction between owner pay already budgeted in costs and additional operating profit.

Now suppose each job uses three productive crew-hours and the month has 150 available productive crew-hours after travel and downtime. Capacity is 150 ÷ 3 = 50 jobs. The 43-job break-even plan fits; the 53-job profit plan needs 159 hours and exceeds capacity by nine. Raising price, improving delivery efficiency or increasing usable crew-hours could change that constraint. The calculation does not prove demand for those jobs.

If clients pay after the month ends, the operating target also does not establish that cash is available for payroll. See cash-flow versus profit break-even for a separate payment-timing check. Use the exact contribution ratio for calculations and round only the final dollars and whole-job requirement.

How to run your own numbers

Start with one time period, such as a month. Write down the fixed costs you expect during that period. Include recurring overhead that supports the business, and label any cost that changes only after a threshold. If you are analyzing a new offer, use the costs you expect after launch rather than relying on an old budget.

Next, choose the unit you will sell. It might be one cleaning, order, consultation, subscription, product, or project. Put the selling price and every variable cost beside that unit. If a fee is a percentage of price, calculate it at the price you are testing. If shipping varies, use a reasonable average and note the assumption.

Subtract variable cost from price. That is the contribution margin. Then divide fixed costs by the contribution margin and round up to the next whole unit. You cannot sell part of a job or order, and rounding down would understate the target.

You can run the calculation with the MyBreakeven calculator. Enter the same assumptions you used on paper, then test a few alternatives. Try a higher price, a lower variable cost, or a different fixed-cost plan. Comparing scenarios shows which business decision has the largest effect on the target.

Finally, compare the target with your practical capacity. If the answer is 800 orders but your team can fulfill only 500, the arithmetic is not wrong; the plan needs a pricing, cost, capacity, or sales change. Break-even analysis is a planning tool, not a guarantee that customers will buy.

For more planning topics, browse the small business guide library. Keep a dated copy of your assumptions so you can explain why the answer changes from one review to the next.

Common mistakes

Using revenue instead of contribution margin. Fixed costs divided by selling price ignores the cost of making or delivering each sale. Subtract variable costs first.

Mixing time periods. Monthly fixed costs paired with annual sales create a misleading result. Convert every input to the same period before calculating.

Forgetting small per-sale fees. Payment processing, packaging, commissions, shipping subsidies, and marketplace charges can reduce the margin. Include them when they rise with sales.

Treating every cost as fixed. A cost that grows with orders belongs in variable costs. Misclassification makes the contribution margin too high or too low.

Rounding down. If the calculation is 133.33 units, the break-even target is 134 units, not 133.

Assuming one product margin for every sale. A business with multiple products needs a realistic sales mix or separate calculations. An average based on a few unusual orders can distort the result.

Confusing break-even with a desired income target. Break-even means zero profit before the costs included in the model. To plan for owner pay or a profit goal, add that target to fixed costs, then divide by the contribution margin.

Leaving out capacity and demand. The formula describes the volume required. It does not confirm that your market, schedule, equipment, or team can support that volume.

Closing takeaways

• Use the contribution margin, not the selling price alone. Each sale must pay its variable cost before it can help cover overhead.
• Keep the period and unit consistent. Monthly costs require a monthly target, and mixed products require a realistic sales mix.
• Round the unit target up. A partial sale cannot cover a full break-even requirement.
• Test decisions, not just one answer. Price, variable cost, fixed cost, and product mix each change the result.
• Treat the calculation as a planning baseline. Review it as your actual costs, capacity, and demand become clearer.

FAQs

What is the simplest break-even formula?

Use fixed costs divided by selling price minus variable cost per unit. In symbols: Fixed costs ÷ (Selling price − Variable cost). Keep all costs and sales in the same time period.

Should I calculate break-even in units or dollars?

Use units when you sell a clear, repeatable item or service. Use sales dollars when products have different prices and you have a dependable contribution margin ratio. For a mixed business, calculate both when possible.

What if my contribution margin is zero?

If price equals variable cost, each sale contributes nothing toward fixed costs. If variable cost is higher than price, each sale increases the loss. You need to change price, cost, product mix, or the offer before the standard break-even calculation can produce a useful target.

Does break-even include taxes?

Only if you include taxes in the costs you are analyzing. State your purpose first. An operating break-even point may exclude income taxes, while a cash-planning target may include specific tax obligations.

How often should I update my break-even point?

Update it whenever price, supplier cost, fees, rent, staffing, product mix, or other major assumptions change. A regular monthly or quarterly review can also reveal gradual cost changes before they distort your plan.

How do I calculate break-even with a profit goal?

Add the desired profit to fixed costs, then divide by the contribution margin per unit. For example, $4,000 of fixed costs plus a $1,000 profit goal, divided by a $25 margin, requires 200 units.

Can break-even analysis tell me whether my business will succeed?

No. It tells you the volume or sales needed to cover the costs included in the model. You still need to assess demand, pricing, competition, cash timing, capacity, and the accuracy of your assumptions.