How to Calculate Break-Even Point for a Small Business

Every small business has a sales number that separates losing money from making it. That number is the break-even point, and finding it takes one division. This guide walks through the formula, a full worked example, the costing mistakes that quietly distort the result, and how to move the number in your favor.

Want the answer first? Enter your figures in the free break-even calculator and it returns your break-even units, revenue, and contribution margin instantly.

What is the break-even point?

The break-even point is the sales level where total revenue exactly equals total costs, so the business makes neither a profit nor a loss. Sell less than that amount and the month ends in the red; sell more and every additional sale starts producing profit. It is usually expressed in units sold, in revenue, or in both.

Think of it as the finish line your fixed costs set for you each month. Rent, salaries, and insurance are owed whether you sell anything or not. Each sale chips away at that total by a fixed amount — the contribution margin — and the break-even point is simply the moment the chips add up to the whole bill.

How do you calculate the break-even point?

Use this formula: break-even units = fixed costs ÷ (price per unit − variable cost per unit). The amount in brackets is the contribution margin — what one sale leaves behind after its own direct costs. Divide your monthly fixed costs by that margin and you get the units you must sell to cover everything.

Break the job into three steps. First, total the costs that do not change with sales volume for one month. Second, work out the variable cost of a single unit: materials, packaging, per-order shipping, and transaction fees. Third, subtract that variable cost from your selling price to get the contribution margin, then divide. Multiply the resulting units by price if you also want the break-even revenue.

What does a worked break-even example look like?

Say your fixed costs are $12,000 a month, you sell one product for $50, and each unit costs $30 in materials, packaging, and fees. The contribution margin is $50 minus $30, which is $20. Divide $12,000 by $20 and the break-even point is 600 units, or $30,000 in monthly revenue.

Check the result the long way: 600 units at $50 bring in $30,000. Variable costs take 600 times $30, which is $18,000, leaving exactly $12,000 — precisely enough to pay the fixed costs, with nothing left over. Want a $5,000 profit instead of zero? Add the target to fixed costs before dividing: ($12,000 + $5,000) ÷ $20 = 850 units. Try both numbers in the break-even calculator to see how sensitive the result is to price.

Which costs are fixed, and which are variable?

Fixed costs stay the same for the month regardless of sales: rent, salaried wages, insurance, software subscriptions, loan payments, and a realistic salary for yourself. Variable costs rise with each unit sold: raw materials, packaging, shipping per order, marketplace and payment fees, and hourly labor paid per job. Some costs, like utilities, have both parts — use the average monthly figure.

When a cost is genuinely mixed, classify it by its behavior over a few months rather than by its name. If the bill barely moves when sales double, treat it as fixed. If it climbs in step with orders, treat it as variable. Getting this split right matters more than decimal-level precision, because a misclassified cost distorts the margin on every single unit.

What are the most common break-even mistakes?

The costliest mistake is forgetting the owner’s salary in fixed costs. Many owners run the numbers as if their own pay were optional, conclude they break even at a comfortably low figure, and then wonder why the business still cannot pay them. If you need the business to support you, your salary is a fixed cost, full stop.

The second classic error is mixing one-time and recurring costs. A $6,000 equipment purchase is not a $6,000 monthly fixed cost; spread it across its useful life or leave it out of the monthly run-rate and handle it separately as a cash-flow item. The same applies in reverse: an annual insurance premium paid once should still count as one-twelfth of its cost in each month’s fixed costs. A quick sanity check with a profit margin calculator also helps confirm your margin assumptions are realistic before you trust the result.

How do you lower your break-even point?

There are three levers. Raise your price, and each unit contributes more, so fewer units cover the fixed costs. Cut variable cost per unit — renegotiate materials, reduce packaging waste, or lower per-order fees — for the same effect from the cost side. Or cut fixed costs themselves, which shrinks the total that has to be covered each month.

Small moves compound surprisingly fast. In the example above, raising the price from $50 to $55 lifts the margin from $20 to $25 and drops break-even from 600 units to 480 — a 20 percent easier month, from a 10 percent price change. Before cutting prices to chase volume, model the new margin with the product pricing calculator; a discount that feels small can push your break-even point beyond what your market can actually buy.

Frequently Asked Questions

How often should I recalculate my break-even point?

Recalculate whenever a real input changes: a rent increase, a new hire, a supplier price rise, or a price change of your own. Many owners review it quarterly. Costs drift quietly, and a break-even figure from last year can be hundreds of units away from the true one today.

Can a business have more than one break-even point?

Yes. Each product with its own price and variable cost has its own contribution margin. Businesses usually calculate a blended break-even using the average margin across their sales mix, then track individual products separately to spot which lines pull the average up or down.

What if my price is lower than my variable cost?

Then no sales volume can save the month: every unit sold loses money before fixed costs are even considered. Raise the price, cut the per-unit cost, or drop the product. Selling more of a negative-margin item only digs the hole faster.

Does break-even analysis include taxes?

The basic formula does not include income tax, because tax depends on final profit rather than on each unit. Treat the result as your pre-tax operating target. If taxes matter for a decision, calculate the pre-tax profit you need after allowing for your expected tax rate, and use that as the target profit.

This guide is educational and uses simplified examples with a single product and steady costs. Your break-even point will shift with discounts, returns, taxes, and your sales mix, so review the result against your real accounts or with an accountant before acting on it.