How to Calculate Break-Even Point: Business Guide

By Equipe Suite Calculadoras 7/9/2026

How to Calculate the Break-Even Point of Your Business: Complete Guide

The break-even point (or break-even point) is the sales level at which a company exactly covers all its costs — neither makes a profit nor makes a loss. Below this point, the business operates in the red. Above it, it generates profit.

Understanding and calculating the break-even point is one of the most fundamental analyzes of the financial management of any business — be it a cafeteria, a design studio, an e-commerce or a manufacturing company. It answers critical questions:

  • "How many products do I need to sell per month to not make a loss?"
  • "What is the minimum monthly income to pay all the bills?"
  • "If I reduce the price, how many more units do I need to sell?"

Use our Break Even Calculator to calculate yours.

The Three Types of Costs You Need to Understand

Before calculating break-even, it is essential to correctly classify your business costs:

Fixed Costs

These are costs that exist regardless of the volume of production or sales. They don't change when you sell more or less.

Examples:

  • Rent of commercial space
  • Salary of permanent employees
  • Installments of equipment (leasing)
  • Software subscriptions (ERP, CRM)
  • Insurance
  • Accountant/professional fees
  • Energy and internet (fixed part)

Variable Costs

These are costs that increase proportionally to the volume of production or sales.

Examples:

  • Cost of raw material per unit produced
  • Seller commission (% of sales)
  • Packaging and shipping per order
  • Revenue taxes (ICMS, PIS, COFINS — levied per sale)
  • Payment fees (credit card: 2-3% per transaction)

Semi-Variable Costs

They have a fixed part and a variable part. Ex: electricity bill (fixed deductible + consumption).

The Break-even Formula

1. Contribution Margin per Unit

Before calculating the break-even, you need the Contribution Margin (MC) per unit:

MC per unit = Sales Price − Variable Cost per Unit

The contribution margin represents how much each unit sold "contributes" to covering fixed costs.

2. Breakeven Point in Units

PE (units) = Total Fixed Costs ÷ Contribution Margin per Unit

3. Breakeven Point in Revenue ($)

PE (revenue) = Total Fixed Costs ÷ Contribution Margin Index

Where the Contribution Margin Index (BMI) is:

BMI = (Sales Price − Variable Cost) ÷ Sales Price

Practical Calculation Examples

Example 1: Cafeteria / Restaurant

Data:

  • Sales price of the main dish: $ 35,00
  • Custo variável por prato (ingredientes + embalagem): $ 14.00
  • Monthly fixed costs: $ 8.400,00 (aluguel $ 3,000 + salaries $ 4.200 + outros $ 1,200)

Calculation:

  • Contribution Margin: $ 35,00 − $ 14.00 = $ 21,00 por prato
  • PE em unidades: $ 8,400 ÷ $ 21,00 = 400 pratos por mês
  • PE em receita: $ 8,400 ÷ (21/35) = $ 8.400 ÷ 0,60 = $ 14,000.00 per month

Interpretation: The cafeteria needs to sell at least 400 dishes per month (≈ 13.3 dishes per day, 30 days) to avoid making a loss. Any sale above this generates a profit of $21.00 per dish.

Example 2: E-commerce / Physical Product

Data:

  • Product sold at: $ 120,00
  • Custo variável por unidade (produto + frete + embalagem + taxa de pagamento + impostos): $ 72.00
  • Monthly fixed costs: $6,000.00 (platform + salary 1 employee + fixed marketing)

Calculation:

  • MC per unit: $ 120,00 − $ 72.00 = $ 48,00
  • IMC: $ 48.00 ÷ $ 120,00 = 40%
  • PE em unidades: $ 6,000 ÷ $ 48,00 = 125 unidades por mês
  • PE em receita: $ 6,000 ÷ 0.40 = $ 15,000.00 per month

Example 3: Provision of Services

Data:

  • Service hour charged at: $ 180,00
  • Custo variável por hora (comissão do prestador 40%): $ 72.00
  • Monthly fixed costs: $ 9,500.00

Calculation:

  • MC per hour: $ 180,00 − $ 72.00 = $ 108,00
  • PE em horas: $ 9,500 ÷ $ 108,00 = 87,96 ≈ 88 horas por mês
  • PE em receita: $ 9,500 ÷ (108/180) = $ 9.500 ÷ 0,60 = $ 15,833.33 per month

Types of Breakeven Point

There are three variations of the break-even point, each with a different purpose:

1. PE Contábil (Break-even Contábil)

Covers all accounting costs, including depreciation. It is the simplest and most used. Formula above.

2. Financial PE (Cash Break-even)

Excludes non-disbursable costs (e.g. depreciation) because the objective is to know when cash is sufficient to pay the actual bills. Ideal for immediate cash flow analysis.

Financial PE (unit) = (Fixed Costs − Depreciation) ÷ MC per unit

3. Economic PE (Break-even with Minimum Profit)

Includes the desired return on equity (opportunity cost). Answer: "With what level of sales does the business adequately remunerate my investment?"

Economic PE (unit) = (Fixed Costs + Minimum Desired Profit) ÷ MC per unit

Sensitivity Analysis: How Break-even Changes with Different Variables

One of the most powerful applications of break-even is sensitivity analysis — seeing how the PE changes when you change a variable.

Scenario: Cafeteria in Example 1 (PE = 400 dishes, CF = $ 8.400, MC = $ 21)

Change New PE
10% price reduction ($ 31,50) MC = $ 17.50 → PE = 480 dishes (+20%)
10% increase in variable costs ($ 15,40) MC = $ 19.60 → PE = 429 dishes (+7%)
10% increase in fixed costs ($ 9.240) PE = 440 pratos (+10%)
Aumento de 10% no preço ($ 38.50) MC = $ 24.50 → PE = 343 dishes (−14%)

Conclusion: Increasing the price has a much greater impact on PE than reducing variable costs. Pricing strategies have enormous break-even leverage.

Margin of Safety: How Much Are You Above Break-even?

After calculating the PE, it is important to know how far away you are from it with current sales — the Margin of Safety:

Margin of Safety (%) = [(Current Sales − PE in Revenue) ÷ Current Sales] × 100

Example: Snack bar with sales of $ 21.000,00 e PE de $ 14,000.00:

  • Safety Margin = [($ 21.000 − $ 14,000) ÷ $ 21,000] × 100 = 33.3%

This means that sales could fall by 33.3% before the business goes into loss. A safety margin above 25-30% is considered comfortable.

How to Use Break-even for Business Decisions

For Pricing

Before setting the price, calculate what price is necessary to reach break-even with the expected sales volume:

  • PE to revenue = CF ÷ BMI → rearranging: Minimum Price = CF ÷ (Expected Volume × BMI)

For Staff Hiring

Each employee hired increases fixed costs. Calculate how many additional sales will be needed to cover the cost of the new employee.

For New Products or Services

Evaluate the specific PE of each product line separately — products with a higher contribution margin have a lower PE and generate profit faster.

To Evaluate Discounts

Before giving a discount, calculate how much more you will need to sell to maintain the same profit:

  • Units required with discount = CF ÷ (New MC per unit)

Common Errors in Break-even Analysis

  1. Mix fixed and variable costs: Properly separating costs is critical. Classifying a variable cost as fixed overestimates the PE; the opposite underestimates it.

  2. Ignore taxes on revenue: PIS, COFINS, ISS, ICMS — all taxes on revenue are variable costs and must be included in the variable cost per unit.

  3. Do not include the partner's pro-labore: If the owner works in the business without paying himself, the break-even is artificially low. Include pro-labore as a fixed cost.

  4. Use PE as a goal, not as a minimum: Break-even is the level of survival, not prosperity. Real profit starts after PE.

  5. Do not recalculate when costs change: Rent adjustment, minimum wage increase, change of supplier — any change in costs requires a new PE calculation.

Frequently Asked Questions (FAQ)

1. What is the difference between break-even point and profitability? The break-even point is the minimum level of sales to not make a loss. Profitability (profit margin) measures the percentage of profit on total revenue above the PE. A profitable business is above its break-even, with enough sales to generate a profit after covering all costs.

2. How to calculate break-even for a company with multiple products? For companies with several products, use the sales mix break-even: calculate the average BMI weighted by the share of each product in total revenue, and use this average BMI in the PE in revenue formula. Alternatively, calculate the individual PE of each product and evaluate the contribution of each line.

3. Does break-even consider customer acquisition cost (CAC)? In most traditional analyses, not directly. CAC can be included as a variable cost (if paid per conversion/lead) or as a fixed cost (if it is a monthly investment in marketing). Including CAC makes analysis more realistic for digital businesses.

4. How does break-even help to price correctly? By knowing your total fixed costs and the contribution margin needed to cover them, you can set prices that guarantee financial viability. If the market price does not allow for sufficient MC, the business model needs to be revised.

5. Can I use break-even for subscription services (SaaS, gym)? Yes. For businesses with recurring revenue, break-even can be calculated in number of subscribers: PE = Fixed Costs ÷ (Monthly Fee − Cost of Serving per Customer). Above this number of subscribers, the business is profitable.

6. Are break-even and payback the same thing? No. Break-even is the monthly analysis (or per period) that indicates the minimum level of sales to cover costs. Payback is the period (in months or years) to recover the initial capital investment (purchase of equipment, renovation, etc.). These are complementary analyses.

7. Does inflation affect the break-even point? Yes, directly. With inflation, fixed costs (rent, salaries) and variable costs (raw materials, energy) rise. Without an equivalent adjustment in prices, the break-even increases. Therefore, it is essential to recalculate the PE after each significant cost adjustment.

8. How to interpret a high break-even? A very high break-even in relation to current sales volume indicates high operational leverage — the business is sensitive to drops in revenue. Strategies to reduce PE include: reducing fixed costs, increasing the contribution margin (raising price or reducing variable costs), or diversifying revenue sources.

Calculate the Break-Even Point of Your Business

With data on your fixed costs, sales price and variable costs in hand, our calculator does the job in seconds.

Access the Break-Even Calculator — obtain the PE in units and in revenue, with the contribution margin calculated automatically.

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