Break-Even Calculator
Find the exact number of units or revenue you need to cover all costs. See profit zones, contribution margins, and how changes in price or costs shift your break-even point.
| Scenario | Change | BE Units | BE Revenue | Profit at Volume | Impact |
|---|
| Units | Revenue | Variable Costs | Fixed Costs | Total Costs | Profit / Loss |
|---|
How to Use This Break-Even Calculator
Enter your selling price per unit — the price customers pay. Then enter your variable costs per unit: the direct costs that increase with each unit sold (materials, labor, shipping, commissions). Finally, enter your total monthly fixed costs: expenses that stay the same regardless of how many units you sell (rent, salaries, insurance, subscriptions).
The calculator instantly finds your break-even point — the exact number of units where revenue equals total costs. Below that point you lose money; above it you earn profit. The contribution margin (price minus variable costs) tells you how much each additional unit contributes toward covering fixed costs and generating profit.
Optionally set a target profit to see how many units you need to not just break even, but hit a specific income goal. The What-If Scenarios tab shows how changes in price, costs, or volume shift the break-even point — essential for pricing and cost decisions.
The Break-Even Formula
= Fixed Costs / Contribution Margin per Unit
= Contribution Margin / Revenue
The contribution margin is the single most important number in break-even analysis. Every dollar of contribution margin goes first to covering fixed costs, then to profit. A higher contribution margin means fewer units needed to break even — which is why businesses obsess over unit economics.
Understanding Contribution Margin
| CM Ratio Range | What It Means | Typical Industries |
|---|---|---|
| 70–90% | Very high — mostly fixed-cost business | Software, digital products, consulting |
| 50–70% | Strong — good pricing power | Services, premium retail, SaaS |
| 30–50% | Moderate — balanced cost structure | Manufacturing, restaurants, specialty retail |
| 10–30% | Thin — high variable costs | Grocery, wholesale, commodity retail |
| Under 10% | Very thin — volume-dependent | Resellers, low-margin distributors |
The margin of safety measures how far your actual (or expected) sales are above the break-even point. If you break even at 200 units and sell 500, your margin of safety is 60% — meaning sales could drop 60% before you start losing money. A higher margin of safety means a more resilient business. If your margin of safety is under 20%, you have very little room for error and should focus on either increasing volume, raising prices, or cutting costs.
Fixed vs Variable Costs: What Goes Where
| Fixed Costs (Don’t Change) | Variable Costs (Scale with Volume) |
|---|---|
| Rent / lease payments | Raw materials / ingredients |
| Salaries (non-commission) | Direct labor per unit |
| Insurance premiums | Shipping / delivery per unit |
| Software subscriptions | Sales commissions (% of sale) |
| Loan payments | Payment processing fees |
| Depreciation | Packaging materials |
| Utilities (base amount) | Marketplace fees (e.g., Amazon referral) |
Real businesses have costs that are partly fixed and partly variable — like utilities (base charge + usage), staffing (you need more people at higher volume but in steps), and marketing (some is fixed budget, some scales with sales). This calculator uses a simplified model. For precision, split semi-variable costs into their fixed and variable components, or test different scenarios using the What-If tab.
Related Tools
| Calculator | Use It For |
|---|---|
| ROI Calculator | Measure return on investment after you pass break-even |
| Profit Margin Calculator | Analyze gross, operating, and net margins |
| DCF Calculator | Value a business based on projected cash flows |
| WACC Calculator | Find cost of capital for business investment decisions |
| Inflation Calculator | Adjust future costs and pricing for inflation |
| Compound Interest Calculator | Project growth of retained profits over time |
FAQ
What is the break-even point?
The break-even point is the sales volume — in units or revenue — where total revenue exactly equals total costs. At this point, you earn zero profit and zero loss. Below break-even, you lose money. Above it, every additional unit sold generates pure profit (after variable costs). It’s the minimum volume you need to sustain the business.
What is contribution margin?
Contribution margin is the selling price minus the variable cost per unit. It’s the amount each unit “contributes” toward covering fixed costs and generating profit. If you sell a widget for $50 with $25 in variable costs, your contribution margin is $25. You need to sell enough units at $25 contribution margin to cover all your fixed costs before you start earning profit.
How do I lower my break-even point?
Three levers: raise your price (increases contribution margin per unit), reduce variable costs (same effect), or reduce fixed costs (less overhead to cover). The most powerful lever depends on your business: SaaS companies focus on reducing churn (a form of variable cost), manufacturers focus on production efficiency, and retailers focus on negotiating better wholesale prices.
What is the margin of safety?
Margin of safety = (Expected Sales − Break-Even Sales) / Expected Sales. It shows how much of a sales decline you can absorb before losing money. A 40% margin of safety means sales could drop 40% and you’d still break even. Below 20% is risky — you need to tighten costs or increase revenue to build a buffer.
Does this work for service businesses?
Yes — define your “unit” as a billable hour, project, or client. Price per unit is your hourly rate or project fee. Variable costs might include subcontractor costs, materials, or per-project software costs. Fixed costs are your rent, full-time salaries, and overhead. The math is identical regardless of whether you sell physical products or services.
What if I sell multiple products?
Use a weighted-average contribution margin. If Product A has a $30 CM and sells 60% of volume, and Product B has a $15 CM and sells 40%, your weighted CM is ($30 × 0.6) + ($15 × 0.4) = $24. Use $24 as your contribution margin in this calculator. For more precision, run the calculator separately for each product line.
How does the target profit feature work?
It adds your desired profit to the fixed costs in the formula: (Fixed Costs + Target Profit) / Contribution Margin. This tells you how many units you need to sell to not just cover costs but earn a specific amount. If fixed costs are $5,000/month and you want $3,000 profit, the calculation uses $8,000 as the total to cover.
Why do prices have such a big impact on break-even?
Because price changes hit the contribution margin directly. If your CM is $25 and you raise the price by $5 (to $30 CM), that’s a 20% improvement — which can reduce your break-even point by nearly 17%. Price is the highest-leverage variable in most businesses because it directly increases the numerator of the profit equation with no additional cost.
Key Takeaways
- Break-even = Fixed Costs ÷ Contribution Margin — it’s the minimum volume where revenue covers all costs. Below this, you lose money.
- Contribution margin is king — the higher your CM (price minus variable costs), the fewer units you need to break even and the faster profit grows above that point.
- Price is the highest-leverage variable — a small price increase improves CM directly with no additional cost. Test the Price Sensitivity tab to see the impact.
- Track your margin of safety — it tells you how much sales can decline before you start losing money. Above 30% is healthy; below 20% is precarious.
- Fixed costs set the floor — reducing fixed costs directly lowers your break-even point. Every $1,000/month in fixed costs avoided means fewer units you must sell.
- Use What-If scenarios for decisions — before changing prices, adding a product, or signing a new lease, model it here to see how it shifts your break-even point.