⚖️ Break-Even Calculator: Find Your Break-Even Point
By Shihab Mia · Reviewed by ToolNimba Editorial Review, small-business finance content · Updated 2026-06-27
This calculator gives a simplified estimate for planning only. A real break-even point depends on your exact cost classification, sales mix across products, taxes, financing costs, seasonality and how costs behave at different volumes. The result is not financial or accounting advice, confirm the figures with your own records and speak to a qualified accountant before making business decisions.
The break-even point is the sales volume at which your total revenue exactly covers your total costs, so you make neither a profit nor a loss. Knowing it tells you the minimum you must sell to stop losing money. Enter your fixed costs, the variable cost to make or buy one unit, and the price you sell each unit for, and this calculator shows the break-even point in both units and revenue, plus the contribution each unit makes.
What is the Break Even Calculator?
Break-even analysis splits your costs into two groups. Fixed costs stay roughly the same no matter how much you sell: rent, salaries, insurance, software subscriptions. Variable costs rise and fall with output: materials, packaging, payment fees, the cost of goods you resell. The gap between your selling price and the variable cost of one unit is the contribution margin, the amount each sale contributes toward covering the fixed costs and, eventually, profit.
The logic is simple. Each unit you sell throws off one contribution margin. You keep selling until those contributions have added up to the whole fixed-cost pile. At that moment you have broken even. So break-even units = fixed costs divided by the contribution margin per unit. Multiply that by the price and you get the break-even point expressed in revenue (sales dollars) instead of units.
There is a second route to the same revenue figure that does not need a unit count, which matters for service businesses or shops selling many different items. First work out the contribution margin ratio: contribution margin divided by selling price, expressed as a percentage. Then break-even revenue = fixed costs divided by the contribution margin ratio. If your fixed costs are 18,000 dollars and your contribution margin ratio is 80 percent, you break even at 18,000 / 0.80 = 22,500 dollars in sales. This is the formula accountants reach for when "units" is a fuzzy idea.
Break-even is the floor, not the finish line. Two extra measures turn it into a planning tool. The margin of safety is how far your actual or forecast sales sit above break-even, written as a percentage: (current sales minus break-even sales) divided by current sales. A margin of safety above 30 percent is comfortable, while under 15 percent means a small dip in demand can push you into a loss. The target-profit volume answers the opposite question, "how much must I sell to earn a set profit": add your desired profit to the fixed costs, then divide by the contribution margin per unit. Treating the profit goal as an extra fixed cost is the cleanest way to plan a real income rather than just survival.
If the numbers look unfriendly, you have exactly three levers to lower the break-even point. Raise the price, which widens the contribution margin per unit. Cut the variable cost per unit by negotiating supplier terms, reducing waste or improving efficiency. Or trim the fixed costs so there is a smaller pile to cover in the first place. Small moves compound: a 10 percent price rise on a 50 dollar product with 20 dollar variable cost lifts the contribution margin from 30 to 35 dollars, a 17 percent improvement that drops the break-even volume by the same proportion.
There is one situation where no answer exists. If your selling price is less than or equal to your variable cost per unit, the contribution margin is zero or negative, meaning every sale loses money or merely treads water. No volume of sales will ever cover the fixed costs, so the business can never break even at that price. The fix is structural: raise the price, cut the variable cost per unit, or both, until each unit earns a positive contribution.
When to use it
- Working out the minimum number of units a new product must sell before it stops losing money.
- Pricing a product by testing how a higher or lower price changes the volume you need to break even.
- Deciding whether a fixed cost (new hire, bigger lease, machine) is worth the extra sales it demands.
- Setting a sales target for a specific profit goal by adding the desired profit to fixed costs first.
- Checking your margin of safety so you know how far sales can fall before the business slips into a loss.
- Pitching to a lender or investor with a clear, defensible break-even figure for the business plan.
How to use the Break Even Calculator
- Enter your total fixed costs for the period (rent, salaries, insurance and other costs that do not change with volume).
- Enter the variable cost to produce or buy one unit (materials, packaging, per-sale fees).
- Enter the price you sell one unit for.
- Read off the break-even point in units, the matching revenue, and the contribution margin per unit.
- To plan for profit, add your target profit to the fixed-cost figure before reading the result, or compare the break-even against your expected sales to gauge the margin of safety.
Formula & method
Worked examples
A workshop has $12,000 in fixed costs. Each item costs $10 to make and sells for $25.
- Contribution margin = 25 - 10 = $15 per unit
- Break-even units = 12,000 / 15 = 800 units
- Break-even revenue = 800 x 25 = $20,000
Result: Break even at 800 units, which is $20,000 in revenue. Each unit beyond that adds $15 profit.
A service firm has $18,000 in fixed costs and an 80% contribution margin ratio (it keeps 80 cents of every sales dollar after variable costs).
- Break-even revenue = fixed costs / contribution margin ratio
- Break-even revenue = 18,000 / 0.80
- Break-even revenue = $22,500
Result: The firm breaks even at $22,500 in sales. The ratio method needs no unit count, so it suits services and mixed-product shops.
The same workshop ($12,000 fixed, $15 contribution margin per unit) wants to earn a $6,000 profit, and expects to sell 1,200 units.
- Target-profit units = (fixed costs + target profit) / contribution margin = (12,000 + 6,000) / 15 = 1,200 units
- Break-even sales = 800 units x $25 = $20,000; expected sales = 1,200 x $25 = $30,000
- Margin of safety = (30,000 - 20,000) / 30,000 = 33%
Result: Selling 1,200 units hits the $6,000 profit goal and leaves a 33% margin of safety, a comfortable cushion above break-even.
A reseller buys stock for $9 per unit and sells it for $9. Fixed costs are $4,000.
- Contribution margin = 9 - 9 = $0 per unit
- With zero contribution, no number of sales chips away at the fixed costs
- Break-even units = 4,000 / 0, which is undefined
Result: The business never breaks even at this price. The price must rise above $9 (or the cost must fall) to earn a positive contribution.
How price affects break-even units and revenue (fixed costs $10,000, variable cost $30 per unit)
| Price per unit | Contribution margin | Break-even units | Break-even revenue |
|---|---|---|---|
| $40 | $10 | 1,000 | $40,000 |
| $50 | $20 | 500 | $25,000 |
| $60 | $30 | 334 | $20,040 |
| $80 | $50 | 200 | $16,000 |
| $30 (= cost) | $0 | Never | Not possible |
Break-even revenue from the contribution margin ratio (fixed costs $20,000)
| Contribution margin ratio | Meaning | Break-even revenue |
|---|---|---|
| 20% | Low margin, high volume needed | $100,000 |
| 40% | Typical retail or product | $50,000 |
| 60% | Healthy product margin | $33,333 |
| 80% | Service or software | $25,000 |
| 100% | No variable cost | $20,000 |
Reading the margin of safety (how far sales sit above break-even)
| Margin of safety | Interpretation | Risk level |
|---|---|---|
| Below 0% | Sales are under break-even, operating at a loss | Critical |
| 0% to 15% | Only a thin cushion above break-even | High |
| 15% to 30% | Reasonable buffer for normal swings | Moderate |
| Above 30% | Stable, can absorb a downturn | Low |
Common mistakes to avoid
- Mixing fixed and variable costs together. The whole method depends on separating costs that change with volume from those that do not. Lumping a per-unit shipping cost into the fixed pile, or treating rent as variable, throws off the contribution margin and gives a misleading break-even point.
- Forgetting your own salary or owner pay. Many small operators leave their own wage out of fixed costs, so the calculator says they break even while they are actually working for free. If you need to be paid, include that pay as a fixed cost.
- Pricing at or below the variable cost. If the price does not clear the variable cost per unit, the contribution margin is zero or negative and the business can never break even, no matter how much it sells. More volume only deepens the loss.
- Treating break-even as the goal. Break-even is the floor, not the target. It is where profit begins. Plan to sell comfortably above it so there is a margin of safety for slow months and surprises.
- Ignoring the sales mix when you sell many products. A single break-even point assumes one product or one steady blend. If your mix shifts toward lower-margin items, your real break-even rises. Use a weighted-average contribution margin, or the contribution margin ratio on total sales, for a multi-product business.
- Assuming costs stay linear at every volume. Break-even math treats the price and the variable cost as constant. In reality bulk discounts, overtime pay, or stepped fixed costs (a second shift, a bigger lease) kick in at certain volumes, so revisit the figures whenever your scale changes.
Glossary
- Break-even point
- The sales volume at which total revenue equals total costs, so there is neither profit nor loss.
- Fixed costs
- Costs that stay broadly the same regardless of how much you produce or sell, such as rent, salaries and insurance.
- Variable cost per unit
- The cost that is incurred for each additional unit made or sold, such as materials, packaging and per-sale fees.
- Contribution margin
- The selling price minus the variable cost per unit, the amount each sale contributes toward fixed costs and profit.
- Contribution margin ratio
- The contribution margin divided by the selling price, written as a percentage. It lets you find break-even in dollars without counting units.
- Margin of safety
- How far current or expected sales sit above the break-even point, a buffer against a downturn, often shown as a percentage of sales.
- Target-profit volume
- The sales needed to earn a chosen profit, found by adding the desired profit to fixed costs before dividing by the contribution margin.
- Sales mix
- The blend of different products sold. A shift toward lower-margin items raises the break-even point even if total volume is unchanged.
Frequently asked questions
What is the break-even formula?
Break-even units = fixed costs / (price per unit - variable cost per unit). The denominator is the contribution margin per unit. Multiply the break-even units by the price to express the break-even point as revenue instead of units.
How do I calculate the break-even point in dollars?
Break-even point in dollars = fixed costs / contribution margin ratio, where the contribution margin ratio is the contribution margin divided by the selling price. For example, $18,000 of fixed costs and an 80% ratio give 18,000 / 0.80 = $22,500. This dollar method needs no unit count, so it suits service firms and shops selling many products.
What is the difference between fixed and variable costs?
Fixed costs do not change with how much you sell, for example rent, salaries and insurance. Variable costs rise and fall with output, for example materials, packaging and per-sale payment fees. Separating the two correctly is essential for an accurate break-even point.
What is contribution margin?
Contribution margin is the selling price of one unit minus its variable cost. It is the amount each sale contributes toward covering your fixed costs, and once the fixed costs are covered, toward profit. A higher contribution margin means a lower break-even point.
What is the margin of safety and what is a good level?
The margin of safety is (current sales - break-even sales) / current sales, written as a percentage. It shows how far sales can fall before you hit a loss. Above 30% is comfortable, 15% to 30% is moderate, and below 15% is risky because a small dip in demand can push you under break-even.
How do I find the sales needed for a target profit?
Add your desired profit to the fixed costs, then divide by the contribution margin per unit: target-profit units = (fixed costs + target profit) / contribution margin per unit. Treating the profit goal as an extra fixed cost is the simplest way to set a realistic sales target.
How can I lower my break-even point?
You have three levers. Raise the price to widen the contribution margin, cut the variable cost per unit through better supplier terms or less waste, or reduce fixed costs so there is less to cover. Even a small price rise compounds: a 10% increase can drop the break-even volume noticeably.
What if the price is lower than the cost per unit?
If the selling price is at or below the variable cost per unit, the contribution margin is zero or negative, so every sale loses money or breaks even per unit. In that case there is no break-even point at all, you must raise the price or cut the variable cost before any volume can cover the fixed costs.
Why does the calculator round break-even units up?
You cannot sell a fraction of a unit and still cover all costs, so the figure is rounded up to the next whole unit. Selling that whole number guarantees total revenue is at least equal to total costs.
Does the break-even point include profit or taxes?
The basic break-even point is purely the no-profit, no-loss volume and ignores taxes and any target profit. To find the volume for a profit goal, add the desired profit to the fixed costs before dividing by the contribution margin. Taxes apply to profit earned above break-even.
How do I calculate break-even with multiple products?
For several products, use a weighted-average contribution margin based on your sales mix, or work in dollars using the overall contribution margin ratio (total contribution margin / total sales). Break-even sales = total fixed costs / that ratio. Revisit it whenever the mix shifts, since more low-margin sales raise the break-even point.
Sources
- Break-Even Analysis: Definition and How to Calculate and Use It , Investopedia
- Break-Even Point , U.S. Small Business Administration
- Calculate a Break-Even Point in Units and Dollars , Business LibreTexts (OpenStax Managerial Accounting)