Break-Even Point: A Worked Example for a Small Business

Break-even asks a practical question: how much must a business sell before revenue covers the costs included in its plan? It is useful when evaluating a new service, a lease commitment or a price change. It does not tell you whether customers will appear, and it is not the same as a bank-balance forecast.

The original worked example below is entirely hypothetical. No real client results are described. The purpose is to make the inputs and arithmetic visible so you can build a more appropriate estimate for your own circumstances.

1. Gather three inputs for the same period

Maya is planning a mobile bicycle tune-up service. Her monthly fixed costs are $4,680. Each completed appointment sells for $96 before sales tax, and its variable cost is $31. The simplified model assumes one service type and a stable price and cost per appointment.

Fixed costs do not change with appointment volume within the range being considered. Maya includes her workspace commitment, insurance and administrative subscriptions. Variable costs rise with each completed appointment, such as consumables and the particular per-job costs included in her estimate.

Some costs have both a fixed and a variable part. A vehicle payment may stay the same while fuel costs change with the route. You may also need to pay staff for a whole shift rather than for each appointment. Split these costs where you can, and write down any estimates you cannot yet check.

Keep all inputs on the same basis. Monthly fixed costs cannot be divided by an annual contribution amount without adjustment. Exclude sales taxes collected for the government from revenue, and handle recoverable taxes consistently in costs. Have uncertain tax treatment reviewed rather than embedding a guess in the model.

2. Calculate what each appointment contributes

The amount left after a unit's variable cost is its contribution margin in dollars. It contributes toward fixed costs first, then toward profit once those costs are covered.

At 72 appointments, revenue is $6,912. Variable costs total $2,232. Adding fixed costs of $4,680 gives total costs of $6,912: exactly equal to revenue in this model.

Hypothetical monthly result at three appointment volumes

Appointments	Revenue	Variable costs	Fixed costs	Result
60	$5,760	$1,860	$4,680	−$780
72	$6,912	$2,232	$4,680	$0
84	$8,064	$2,604	$4,680	$780

If a calculation produces a fraction of an appointment, round the required volume up to the next whole appointment. Rounding down would leave some costs uncovered. If contribution is zero or negative, selling more of that service does not cover positive fixed costs under the stated assumptions.

3. Test the plan before changing the price

Suppose fixed costs rise by $390 a month. They become $5,070, so the new break-even volume is $5,070 ÷ $65 = 78 appointments. Six extra appointments are required merely to maintain a zero result.

Now return to the original fixed costs and test a different change: reducing the price to $90. Contribution falls to $59 because the $31 variable cost has not changed. Break-even becomes $4,680 ÷ $59, or about 79.32 appointments. Maya therefore needs 80 whole appointments.

At that volume, revenue is $7,200 and variable costs are $2,480. After $4,680 in fixed costs, $40 remains. The lower price requires eight more appointments than the original plan just to get beyond break-even; it does not automatically improve the business because it sounds more attractive.

To plan for a profit, add your goal to fixed costs before dividing. For a hypothetical monthly goal of $1,950 at the original price, the calculation is ($4,680 + $1,950) ÷ $65 = 102 appointments. You still need to allow for any costs or taxes left out of the model.

4. Check whether you can do the work and pay the bills

Seventy-two appointments on paper mean little if travel, setup and available workdays leave room for only 55. Compare the estimate with realistic capacity, not every hour on the calendar. Include cancellations, weather interruptions, administration and the time needed to obtain supplies.

More work can also bring a sudden jump in costs. You may need another employee or vehicle. Once that happens, the original calculation may no longer fit. Update the assumptions before using it for a larger business.

Breaking even does not prove you have enough cash. Equipment purchases, repayments of the amount borrowed on a loan, and late customer payments can use cash without being expenses in this model. Depreciation, which spreads an asset's cost over time, can reduce reported profit without a cash payment in that period. Make a separate cash forecast when payment dates matter.

State how the plan handles owner pay. If you leave out what the owner needs to earn, breaking even may still leave them without enough personal income. Ask your adviser how to include that need. Do not assume the owner's work costs nothing just because they are not yet being paid.

5. Turn the estimate into a review routine

• Gather recurring bills and identify the period each covers.
• Use actual job records to estimate variable costs, not the bank deposit alone.
• Document exclusions, capacity limits and the assumed service mix.
• Compare actual volume, average price and costs with the plan.
• Recalculate when a meaningful assumption changes.

For several products or services, the sales mix affects average contribution. A single average is useful only while that mix is reasonably representative. Start with a clear, limited model and improve it with evidence. Break-even is a decision aid, not a guarantee of demand or profit.