Quick answer

Your break-even point is the amount of billable work that covers your costs with nothing left over. Divide fixed costs by the contribution each billable hour makes after its direct cost. Carry $15,000 a month in fixed costs and earn $50 of contribution per billable hour, and you need 300 billable hours a month just to reach zero.

This guide is written for founders and owners of agencies, studios, and consultancies who want to know exactly how much billable work keeps the lights on who want time tracking to support better planning, billing, reporting, and project decisions.

The two numbers break-even is built from

Break-even needs exactly two inputs: your fixed costs and your contribution margin per billable hour. Fixed costs are the ones that do not move with how busy you are, such as rent, software, insurance, and salaried staff you pay whether or not the work comes in. Contribution margin per hour is the revenue from one billable hour minus the direct cost of delivering it, usually the wage and payroll cost of the person working that hour.

The distinction between fixed and direct cost is what makes the model work, so draw it carefully. A salaried employee you keep on regardless of workload is a fixed cost. A contractor you only pay when a project needs them is a direct cost that scales with the work. Classify the same person wrong and your break-even point will be wrong in the same direction, so spend the time to split your costs properly before you reach for the formula.

  • Fixed costs: rent, software, insurance, and salaries you pay regardless of workload
  • Direct costs: contractor pay and anything that only occurs when you do the work
  • Contribution per hour = billing rate − direct cost of that hour
  • Break-even ignores profit entirely; it is the line where profit is exactly zero

The formula, in hours and in revenue

To break even in billable hours, divide your fixed costs by your contribution margin per billable hour. Fixed costs of $15,000 a month and contribution of $50 an hour give 15,000 ÷ 50, which is 300 billable hours a month. To break even in revenue instead, divide fixed costs by your contribution margin ratio, which is contribution per hour divided by your billing rate. If you bill $90 and contribute $50, the ratio is 0.56, so break-even revenue is 15,000 ÷ 0.56, roughly $27,000 a month.

The hours version is usually the more useful one for a service business, because hours are the thing you actually schedule and sell. Three hundred billable hours a month across a five-person team is 60 billable hours each, which sounds easy until you remember that nobody is billable all day. At a 65 per cent utilization rate a person has to be present and working around 92 hours to deliver 60 billable ones, and that reality check is the whole point of calculating break-even in hours.

A worked example

A small consultancy has fixed costs of $18,000 a month: a two-person salaried core, rent, software, and insurance. It bills associate time at $120 an hour, and the direct cost of an associate hour, paid to contractors, is $55. Contribution per hour is $120 − $55, which is $65. Break-even in hours is $18,000 ÷ $65, which is roughly 277 billable hours a month. That is the number the business has to clear before it earns a single dollar of profit.

Now make it real. Spread 277 hours across the month and the firm needs about 64 billable hours a week from its contractor pool. If it only sells 200 billable hours in a slow month, the shortfall is 77 hours of missing contribution, which is 77 × $65, about $5,000 the owners have to cover from reserves. Seen this way, a quiet month is not a vague worry, it is a specific hole with a specific size, and that is exactly the kind of number you want to see coming three weeks early rather than on the bank statement.

Why your real break-even is higher than the formula

The textbook break-even point tells you where profit is zero, but a business that runs at zero profit is dying slowly. Your real target is break-even plus the profit you need to reinvest, pay yourself properly, and survive a bad quarter. Add a target monthly profit to your fixed costs before you divide, and the formula gives you the volume that actually sustains the business rather than the volume that merely avoids an immediate loss.

The opinion worth holding firmly is that most service owners quote their break-even far too low because they leave their own fair salary out of fixed costs. If you are not paying yourself a market wage, your break-even is fiction, because the moment you do pay yourself, the number jumps. Put your proper salary in as a fixed cost from the start, and the break-even point you calculate is one you can actually plan a business around.

When break-even analysis misleads

Break-even assumes your billing rate and your cost per hour stay roughly constant, which is fine for steady retainer work and misleading for a business whose rates and costs swing project to project. If you bill some clients at $200 and others at $80, a single blended contribution margin hides more than it shows, and you are better off running break-even per service line than for the business as a whole.

It is also a snapshot, not a plan. Break-even tells you the volume you need at today's costs and today's rates; it says nothing about whether that volume is sellable or whether a rate rise would get you there faster than chasing more hours. Use it to understand the shape of your fixed costs and to set a floor on the work you need, then pair it with your utilization and pricing decisions rather than treating it as a target in isolation.

Where Zeitio fits

Zeitio helps teams connect tracked hours to clients, projects, tasks, reports, approvals, and invoices so time data becomes useful business context instead of another spreadsheet.

Start with simple time entries, review them weekly, and use the data to improve project planning, billing accuracy, and team workload decisions.

Compare Zeitio pricing or create a workspace to try the workflow.

Further reading

FAQs

What is the break-even point of a service business?

It is the amount of billable work that exactly covers your costs, leaving zero profit. You calculate it by dividing fixed costs by the contribution each billable hour makes after its direct cost. Below that volume you lose money; above it you start earning.

How do I calculate break-even in billable hours?

Divide your monthly fixed costs by your contribution margin per billable hour, where contribution is your billing rate minus the direct cost of delivering that hour. Fixed costs of $15,000 and contribution of $50 an hour give 300 billable hours a month to break even.

What is the difference between fixed and direct costs here?

Fixed costs stay the same regardless of workload, such as rent, software, and salaried staff. Direct costs occur only when you do the work, such as contractor pay. Contribution margin uses direct costs, and break-even divides fixed costs by that contribution.

Should I include my own salary in break-even?

Yes. If you leave your own market-rate salary out of fixed costs, your break-even point is understated, because paying yourself properly raises the volume you need. Include a fair salary as a fixed cost so the number reflects a business that can actually sustain you.

Why is my real break-even higher than the formula suggests?

The basic formula finds where profit is zero, but a business running at zero profit cannot reinvest or absorb a bad month. Add your target monthly profit to fixed costs before dividing, and you get the volume that sustains the business rather than merely avoiding a loss.