Break-Even Analysis: A Complete Guide for Small Business Owners
By BizCalculators Team · Last reviewed September 4, 2026
Break-even point = Fixed Costs ÷ (Price per Unit − Variable Cost per Unit); with $50,000 in fixed costs, a $50 price, and $20 variable cost, you break even at 1,667 units sold.
What Is Break-Even Analysis?
Break-even analysis determines how many units you must sell (or how much revenue you must generate) to cover all your costs. At the break-even point, total revenue equals total costs — you're not making a profit but you're not losing money either. Every sale beyond the break-even point contributes directly to profit. It's one of the most important tools for pricing decisions, cost management, and business planning.
Break-even answers a volume question, not a timing one. Knowing you need 1,667 units a year is useful only if you also know how quickly you can sell them, so pair the calculation with a ramp assumption, such as reaching that rate by month nine. You can also express break-even as revenue by multiplying units by price, or in a service business by dividing fixed costs by your effective hourly margin. Either version lets you test a plan against a capacity limit before committing.
The Break-Even Formula
The formula is: Break-Even Units = Fixed Costs / (Price Per Unit - Variable Cost Per Unit). The denominator (price minus variable cost) is called the contribution margin — it's how much each unit contributes toward covering fixed costs. For example, if fixed costs are $50,000, price is $50, and variable cost is $20, your contribution margin is $30 and you need to sell 1,667 units to break even.
The same formula rearranges to answer other questions. To hit a profit target rather than just break even, add that target to fixed costs: $50,000 plus $20,000 divided by $30 gives 2,334 units. To find the price you need, solve fixed costs divided by expected volume plus variable cost, which at 2,000 units with $50,000 fixed and $20 variable comes to $45 per unit. Working in contribution margin ratio, the share of each dollar left after variable costs, makes products of different sizes comparable.
Fixed vs. Variable Costs
Fixed costs remain the same regardless of how much you produce or sell — rent, insurance, salaried employees, software subscriptions, and loan payments. Variable costs change with production volume — raw materials, shipping, sales commissions, payment processing fees, and hourly labor. Some costs are mixed (semi-variable), like utilities that have a base charge plus usage fees. For analysis, separate mixed costs into their fixed and variable components.
Cost classification depends on the time frame you are analyzing. Over one month a lease and salaried payroll are fixed; over three years a lease can be exited and staff reassigned, so almost everything becomes variable. Many costs are really step costs: they stay flat until volume crosses a threshold, then jump when you add a second shift, a second vehicle, or a larger space. Model that step rather than assuming a smooth line, since the jump can move your break-even point overnight.
Using Break-Even for Decision Making
Break-even analysis helps answer key business questions: Should I lower my price to increase volume? (Lower price = higher BEP but potentially more customers.) Should I invest in equipment to reduce variable costs? (Higher fixed costs, lower variable costs — recalculate BEP.) Can I afford to hire another employee? (Increases fixed costs — how many more units must I sell?) Run multiple scenarios with different assumptions to stress-test your decisions.
Discounting deserves its own calculation, because the volume needed to compensate is larger than most owners expect. With a $30 contribution margin on a $50 price, a 10% discount cuts contribution to $25, so you need to sell 20% more units to break even at the same fixed costs. Push the discount to 20% and the margin falls to $20, requiring 50% more volume. Run that number before approving any discount.
Limitations of Break-Even Analysis
Break-even analysis assumes all units are sold at the same price (not always true with discounts and tiered pricing), costs are linear (economies of scale can make variable costs decrease at higher volumes), and the product mix is constant (if you sell multiple products, each with different margins). Use break-even as a directional tool, not a precise prediction. Combine it with cash flow projections and market analysis for a complete picture.
Two more limits are worth noting. Break-even is an accrual measure, so it can show a business as profitable while cash is tight, because a sale on 60-day terms does not pay this month's rent. It also assumes you have the capacity to produce that break-even volume, and if a machine, a key employee, or your own hours cap output below that number, the calculation is academic. When a resource is scarce, rank products by contribution margin per hour of it, not per unit.
Frequently Asked Questions
What is break-even analysis?
Break-even analysis calculates the sales volume or revenue needed to cover all costs — the point where total revenue equals total costs. The formula is fixed costs divided by (price per unit minus variable cost per unit). Below that point you lose money; above it you profit.
How do I calculate my break-even point?
Divide your fixed costs (rent, salaries, insurance) by the contribution margin per unit (price minus variable cost). Example: $10,000 fixed costs and a $50 contribution margin means you break even at 200 units. For services, do the same in billable hours or revenue.
Why is my break-even point important?
It tells you the minimum you must sell to survive, informs pricing (whether your price can cover costs at realistic volume), and guides investment decisions — a new hire or location only makes sense if it shifts the break-even to a profitable place. It's a core tool for pricing and planning.
How can I lower my break-even point?
Reduce fixed costs (renegotiate rent, cut overhead), raise prices, or increase contribution margin (lower variable costs through better supplier pricing or efficiency). Lowering the break-even reduces risk and lets you profit at lower sales volume.