Quick Answer
The break-even point is the sales volume at which total revenue equals total costs, resulting in zero profit and zero loss. Every unit sold beyond this point generates profit.
The formula:
Break-even (units) = Fixed Costs / (Selling Price - Variable Cost per Unit)
The denominator -- selling price minus variable cost -- is called the contribution margin. It represents how much each sale contributes toward covering fixed costs.
The Core Formulas
Four formulas cover all standard break-even calculations:
Contribution Margin = Selling Price - Variable Cost per Unit
Contribution Margin Ratio = Contribution Margin / Selling Price
Break-even in Units = Fixed Costs / Contribution Margin
Break-even in Revenue = Fixed Costs / Contribution Margin Ratio
The unit formula tells you how many items you need to sell. The revenue formula tells you how much money you need to bring in. Both give the same answer expressed differently.
Fixed Costs vs Variable Costs
Correctly classifying costs is the most important step in break-even analysis. Get this wrong and the entire calculation is off.
| Fixed Costs (stay the same regardless of sales) | Variable Costs (change with each unit sold) |
|---|---|
| Rent / lease payments | Raw materials |
| Salaries (non-commission) | Packaging |
| Insurance premiums | Shipping per unit |
| Equipment leases | Sales commissions (per-unit) |
| Software subscriptions | Payment processing fees |
| Loan payments | Direct labor (per unit) |
| Property taxes | Supplies consumed per unit |
The key test: If you sold zero units this month, would you still pay this cost? If yes, it is fixed. If no, it is variable.
Some costs are semi-variable (e.g., electricity -- a base charge plus usage). For break-even purposes, split these into their fixed and variable components or assign them to whichever category dominates.
Worked Example 1: Coffee Shop
Fixed costs: $8,000/month (rent, salaries, insurance, equipment) Average coffee price: $5.00 Variable cost per cup: $1.50 (beans, cup, lid, milk, sugar)
Contribution margin = $5.00 - $1.50 = $3.50
Break-even units = $8,000 / $3.50 = 2,286 cups per month
Break-even per day = 2,286 / 30 = ~76 cups per day
If the shop sells 76 cups per day, it covers all costs exactly. Cup 77 each day generates $3.50 of profit.
Revenue check:
Contribution margin ratio = $3.50 / $5.00 = 0.70 (70%)
Break-even revenue = $8,000 / 0.70 = $11,429/month
At $5.00 per cup, 2,286 cups equals $11,430 in revenue -- consistent with the revenue formula.
Break-Even Calculator
Enter your fixed costs, selling price, and variable cost per unit to instantly calculate your break-even point in units and revenue.
Open CalculatorWorked Example 2: SaaS Product
Fixed costs: $25,000/month (servers, engineering salaries, office, marketing) Monthly subscription price: $49/user Variable cost per user: $7/month (hosting, customer support, payment processing)
Contribution margin = $49 - $7 = $42
Break-even users = $25,000 / $42 = 596 subscribers
The product needs 596 paying subscribers to cover monthly costs. Each subscriber beyond 596 contributes $42 of monthly profit.
Revenue check:
Break-even revenue = 596 x $49 = $29,204/month
Note that SaaS businesses often have high contribution margins (85%+ is common) because variable costs per user are low relative to the subscription price. This makes the model attractive -- once fixed costs are covered, profit scales quickly.
Worked Example 3: Product Launch
One-time fixed costs: $15,000 (tooling, design, initial marketing) Selling price per unit: $39 Variable cost per unit: $12 (materials, packaging, fulfillment)
Contribution margin = $39 - $12 = $27
Break-even units = $15,000 / $27 = 556 units
You need to sell 556 units to recover the initial investment. Every sale after 556 generates $27 of profit.
If you expect to sell 100 units per month, break-even takes approximately 5.6 months. At 200 units per month, approximately 2.8 months.
Break-Even with a Target Profit
The basic formula finds zero-profit break-even. To find the sales volume needed for a specific profit target, add the target profit to fixed costs:
Required units = (Fixed Costs + Target Profit) / Contribution Margin
Example: The coffee shop owner wants $3,000/month in profit.
Required cups = ($8,000 + $3,000) / $3.50 = 3,143 cups/month = ~105 cups/day
That is 29 more cups per day beyond break-even to generate $3,000 in monthly profit.
Sensitivity Analysis: What Changes Break-Even
Break-even is not a single fixed number -- it shifts whenever price, costs, or volume change. Understanding this sensitivity helps you make better decisions.
Effect of a 10% price increase (coffee shop)
New price: $5.50. New contribution margin: $4.00. New break-even: $8,000 / $4.00 = 2,000 cups (down from 2,286 -- a 12.5% reduction in volume needed).
Effect of a 10% increase in variable costs
New variable cost: $1.65. New contribution margin: $3.35. New break-even: $8,000 / $3.35 = 2,389 cups (up from 2,286 -- a 4.5% increase in volume needed).
Effect of a 10% increase in fixed costs
New fixed costs: $8,800. Break-even: $8,800 / $3.50 = 2,514 cups (up from 2,286 -- a 10% increase, directly proportional).
Key insight: Raising the selling price has a larger impact on break-even than equivalent percentage changes in costs, because it appears in the denominator of the formula. A small price increase can meaningfully reduce the volume you need.
Limitations of Break-Even Analysis
Break-even analysis is a useful planning tool, but it has boundaries:
- It assumes all units sell at the same price. Discounts, volume tiers, and seasonal pricing complicate the picture.
- It assumes costs are strictly fixed or variable. In reality, some costs are stepped (e.g., hiring a second employee when volume exceeds a threshold).
- It does not account for the time value of money. A break-even point reached in 6 months is better than one reached in 3 years, but the formula does not distinguish between them.
- It assumes you can sell the required volume. Calculating a break-even of 10,000 units is useless if the market for your product is 5,000 units.
Use break-even analysis as a planning baseline, not a guarantee. Pair it with market research and margin analysis for a fuller picture.
How to Use Break-Even in Business Decisions
Pricing decisions: Calculate break-even at multiple price points to see how pricing affects the volume you need. A higher price means fewer units to break even but may reduce demand.
Cost control: If break-even volume is too high, identify which fixed costs can be reduced or which variable costs can be negotiated down.
Go/no-go decisions: Before launching a product, compare break-even volume to realistic sales projections. If break-even requires more sales than you can reasonably achieve, reconsider the launch or restructure costs.
Investor communication: Break-even analysis gives investors a clear, quantified answer to "when will this make money?" according to SCORE.org small business resources and Harvard Business Review.
Frequently Asked Questions
What is a good break-even point?
There is no universal "good" number. A good break-even point is one you can realistically achieve given your market size, sales capacity, and timeline. Lower is better -- it means less risk. If your break-even requires more volume than your market can support, your pricing or cost structure needs to change.
How long should it take to break even?
Small businesses typically aim to break even within 12-18 months. Startups with significant upfront investment may take 2-3 years. Service businesses with low fixed costs often break even faster than product businesses with equipment and inventory costs. The timeline depends entirely on your cost structure and sales velocity.
Does break-even include owner salary?
It should. If you do not include your own compensation in fixed costs, your break-even point will be artificially low. You might think you are profitable when you are actually just paying yourself out of revenue without truly covering all costs. Include a reasonable salary for yourself as a fixed cost.
How do I lower my break-even point?
Three levers: reduce fixed costs (negotiate rent, cut unnecessary subscriptions, delay hires), reduce variable costs per unit (cheaper suppliers, more efficient production), or raise your selling price. Each has tradeoffs -- raising prices may reduce volume, cutting costs may affect quality. Focus on the lever with the most room to move.
What is contribution margin?
Contribution margin is selling price minus variable cost per unit. It represents how much each sale "contributes" toward covering fixed costs. Once enough units are sold to cover all fixed costs, each additional unit's contribution margin becomes pure profit. For the coffee shop example above, the $3.50 contribution margin means each cup contributes $3.50 toward the $8,000 in monthly fixed costs.
Can I calculate break-even for a service business?
Yes. For services, the variable cost is your direct labor and materials per job or per billable hour. Fixed costs include rent, insurance, equipment, and salaried staff. If you charge $150 per service call, your variable cost is $40, and fixed costs are $8,000/month, you break even at $8,000 / ($150 - $40) = 73 service calls per month.
Does break-even analysis work for multiple products?
Yes, but you need a weighted average contribution margin. Calculate each product's contribution margin, weight it by its expected share of total sales, and use the weighted average in the formula. This gives break-even in total revenue. For example, if Product A has a $20 margin (60% of sales) and Product B has a $35 margin (40% of sales), the weighted average is ($20 x 0.60) + ($35 x 0.40) = $26.
What is the difference between break-even point and payback period?
Break-even point is the sales volume where revenue covers ongoing costs in a given period. Payback period is the time required to recover an initial investment. A business can surpass its monthly break-even (covering rent, salaries, materials) while still being within its payback period (not yet having recovered the initial startup capital).
How does a price increase affect break-even?
Raising the price increases the contribution margin per unit, which lowers break-even volume. In the coffee shop example, a $0.50 price increase (from $5.00 to $5.50) reduces break-even from 2,286 to 2,000 cups per month -- 286 fewer cups needed. Price changes have an outsized effect on break-even because they directly increase the denominator of the formula.
Should break-even analysis include taxes?
Standard break-even calculates zero pre-tax profit, so income taxes do not apply (no profit means no tax). If you want break-even with an after-tax profit target, adjust the formula: (Fixed Costs + Target Profit / (1 - Tax Rate)) / Contribution Margin. For example, to earn $5,000 after tax at a 25% rate, you need to earn $5,000 / 0.75 = $6,667 pre-tax, so use $6,667 as your target profit in the formula.
Related Tools
- Break-Even Calculator -- calculate your break-even point in units and revenue
- Break-Even Covers Planner -- plan break-even for restaurant and hospitality operations
- Margin Calculator -- calculate profit margin and markup for pricing decisions
- Markup Calculator -- find the right selling price based on cost and desired markup