Break-Even Point Calculator — Units & Revenue to Break Even
Units and revenue needed to break even.
Rent, salaries, software, insurance — costs that don't scale with units sold.
Materials, packaging, per-unit labour, payment fees.
Results
- Contribution margin / unit
- $20.00
- Contribution margin %
- 40.00%
- Break-even point (units)
- 2,500
- Break-even revenue
- $125,000.00
Units are rounded up to the next whole unit, because you can't sell a fraction of a unit to break even.
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Break-even formula
Break-Even Units = Fixed Costs / (Selling Price − Variable Cost per Unit)
The denominator — selling price minus variable cost — is the contribution margin per unit. It's the dollars each sale contributes toward covering fixed costs (and, once those are covered, toward profit).
Worked example. A company has $50,000 in monthly fixed costs. Each unit costs $30 in materials and labour to produce and sells for $50.
- Contribution margin = $50 − $30 = $20 per unit
- Break-even units = $50,000 / $20 = 2,500 units
- Break-even revenue = 2,500 × $50 = $125,000
Sell fewer than 2,500 units in the month and the business loses money. Sell more, and every additional unit contributes $20 of pure profit.
Why the contribution margin is the lever
Most operators try to move their break-even by chasing volume. The faster lever is contribution margin. Improve the margin and the same fixed-cost base supports a smaller required sales number.
Using the example above, if you can lift contribution margin from $20 to $25 — either by raising price by $5, cutting variable cost by $5, or some mix — break-even drops from 2,500 units to 2,000 units. That's a 20% reduction in the volume you need to clear without touching fixed costs at all.
In practice, raising price is hard (competitive pressure, customer churn) and cutting variable cost is where procurement, negotiation, and reverse auctions earn their keep.
What break-even doesn't tell you
- It assumes linear costs and revenue. In reality, volume discounts, capacity steps, and price elasticity all bend the lines.
- It assumes a single product (or a fixed sales mix). Multi-product businesses need a weighted-average contribution margin and the answer shifts as the mix shifts.
- It ignores inventory build. Producing units that sit in a warehouse counts as cost but not revenue — break-even is a sold-units number, not a produced-units number.
- It doesn't account for time. Hitting break-even on the P&L doesn't mean you have cash in the bank — payment terms, receivables, and working capital can leave a break-even business cash-poor.
- It doesn't tell you a target profit. Break-even is the floor, not the goal. Layer a profit target on top: (Fixed Costs + Target Profit) / Contribution Margin.
FAQs
How do I calculate break-even point in units?
Divide fixed costs by the contribution margin per unit, where contribution margin = selling price − variable cost per unit. For example, $50,000 in fixed costs and a $20 contribution margin gives a break-even point of 2,500 units. Always round up to the next whole unit, since you can't sell a fractional unit.
What's a good contribution margin?
It depends on the industry. SaaS and software businesses often target 70–80% contribution margins because their variable cost per customer is tiny. Retail and manufacturing typically run 20–40%. Restaurants and grocery often sit at 30–35%. What matters more than the absolute number is the trend — your contribution margin should be stable or improving over time.
What's the difference between break-even and payback period?
Break-even tells you the sales volume needed for revenue to equal total cost — it's measured in units or dollars. Payback period tells you how long it takes a specific investment (a machine, a marketing campaign, a hire) to repay its initial cost — it's measured in time. You can hit break-even on operations and still have a long payback period on a particular capital project.
Can I have a break-even point for multiple products?
Yes, but you have to use a weighted-average contribution margin. Calculate the contribution margin for each product, weight each one by its share of total unit sales (or revenue mix), and use that blended figure as the denominator. The result is sensitive to mix shifts — if your high-margin product's share drops, your break-even point rises even if total revenue is unchanged.
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