# How to Calculate Your Break-even Point Before Starting a Business (Nigeria, 2026)
Most people planning a small business can describe what they hope to earn. Far fewer can say,
with any precision, how much they actually need to sell before the business stops losing money.
That second number - the break-even point - is more useful than almost any other figure in the
early planning of a business, because it turns a hopeful ambition into a specific, checkable
target.
Break-even is not a complicated idea, and it does not require an accounting qualification to
work out. It requires separating your costs into two kinds, understanding what each sale
actually contributes once its own costs are subtracted, and dividing one number by the other.
The result tells you, plainly, how many sales or how much revenue you need before the business
supports itself - which is a very different, and far more useful, question than "will this be
profitable" answered on instinct.
This article walks through the calculation in plain terms, using relative examples rather than
invented figures, since the real numbers have to come from your own costs and your own market,
not from a generic template.
> Knowing whether a business idea can work is less about optimism and more about arithmetic.
> **Separate your costs into what you must pay regardless of sales and what rises with each
> sale, work out what each sale actually contributes after its own direct costs are removed,
> and divide your fixed costs by that contribution to get the exact number of sales you need
> before the business breaks even - a specific target you can test against reality, rather
> than a hope.**
## The three building blocks
Break-even rests on three ideas, all of which are worth understanding properly rather than
memorising as a formula.
**Fixed costs** are the costs you must pay regardless of how much you sell - rent on a shop or
workspace, a fixed salary you have committed to, a licence fee, insurance, a loan repayment.
These do not move whether you make one sale in a month or a hundred. Working out your real
fixed costs means listing every cost that does not change with sales volume and adding them
together for a consistent period, usually a month.
**Variable costs** are the costs that rise directly with each unit you sell - the ingredients
or raw materials in a product, the packaging, a delivery cost per order, a commission paid per
sale. These scale up and down with volume: sell nothing, and you incur none of them; sell more,
and they rise proportionally.
**Contribution margin** is what is left from a single sale after its variable costs are
removed, and before any fixed costs are considered at all. If a product sells for a certain
price and its direct variable costs consume a portion of that price, the remainder is what that
one sale contributes toward covering your fixed costs and, beyond that, toward profit. This is
the number that actually does the work in a break-even calculation - not the selling price
itself, and not the variable cost itself, but the gap between them.
## Doing the calculation without an accounting background
Once you have an honest list of fixed costs and a clear sense of the contribution margin per
sale, the calculation itself is simple division, not complex modelling.
- **List every fixed cost for a consistent period, usually a month**, and add them together.
Be thorough here - it is easy to remember rent and forget smaller recurring costs like a
software subscription, a fixed transport cost, or a loan repayment, all of which belong in
this list.
- **Work out the variable cost of producing or delivering one unit**, including every direct
cost attached to that single sale - materials, packaging, a per-order delivery fee, a
transaction fee charged by a payment provider.
- **Subtract the variable cost from the selling price to get the contribution margin per
unit.** If a product sells for a certain price and its variable cost consumes, say, a large
share of that price, the remaining contribution margin will be small, and you will need
proportionally more sales to cover your fixed costs. If variable costs are a small share of
the price, each sale contributes more, and fewer sales are needed.
- **Divide your total fixed costs by the contribution margin per unit** to get the number of
units you need to sell, in that period, to break even. This is the headline break-even
figure: sell fewer units than this and the business runs at a loss for the period; sell more
and it moves into profit.
- **Convert the unit figure into a revenue figure if that is more useful for your business**,
by multiplying the break-even number of units by the selling price. This gives you a
break-even revenue target, which can be easier to track day to day than a unit count,
particularly for a service business without a single clear "unit."
- **Repeat the exercise for a service business using the same logic**, treating an hour of
billable work, a client engagement, or a project as the "unit," with variable costs being
whatever direct costs attach specifically to delivering that hour or project, separate from
your fixed overheads.
The arithmetic itself takes minutes once the two cost lists are honest and complete. The real
work, and the part most people skip, is building those lists carefully in the first place.
## What the break-even number does and does not tell you
A break-even figure is genuinely useful, but it is easy to over-read it, and worth being clear
about its limits before relying on it.
- **It tells you the sales level at which the business stops losing money, not the sales level
at which it becomes a good use of your time and capital.** A business that breaks even at a
volume you can barely reach, even in a strong month, may technically "work" on paper while
still being a poor decision relative to the effort and risk involved.
- **It assumes your cost lists are accurate and complete, which they often are not on a first
attempt.** Missing a recurring fixed cost, or underestimating a variable cost such as
wastage, returns or a payment provider's fee, makes the break-even figure look more
achievable than it really is.
- **It does not account for how demand behaves at different volumes.** The calculation assumes
you can sell as many units as the break-even figure requires at the price you have assumed,
which is a market question the arithmetic itself cannot answer.
- **It is a moving target, not a one-time exercise.** Fixed costs change as rent renews or a
new fixed obligation is added; variable costs change as suppliers adjust prices. Revisiting
the calculation periodically, particularly before any pricing change, keeps it useful rather
than stale.
- **It works alongside your pricing decision, not instead of it.** See our guide on (/how-to-price-a-product-for-your-business-nigeria/) for
how to arrive at the selling price itself; break-even tells you what that price, once set,
requires in volume.
## Common mistakes to avoid
- **Forgetting smaller recurring fixed costs** - a subscription, a fixed transport cost, a loan
repayment - and understating total fixed costs as a result, which makes the break-even
target look easier to reach than it actually is.
- **Underestimating variable costs by ignoring wastage, returns or payment provider fees**,
overstating the contribution margin per sale and understating how many sales are really
needed.
- **Confusing selling price with contribution margin**, and dividing fixed costs by the full
selling price instead of the margin left after variable costs, which produces a break-even
figure that looks far too easy to hit.
- **Treating the break-even figure as a target to merely meet**, rather than a minimum floor to
clear comfortably, leaving no margin for a slower month or an unexpected cost.
- **Doing the calculation once before launch and never revisiting it**, so it becomes
disconnected from reality as costs and prices change over time.
- **Assuming the demand needed to hit break-even actually exists**, without checking whether
the market can realistically absorb that many sales at the assumed price.
- **Skipping the exercise entirely because the business "feels" viable**, relying on optimism
where a straightforward calculation would give a specific, checkable answer instead.
- **Applying a product business's break-even logic to a service business without adapting the
"unit"**, and ending up with a meaningless figure because hours or projects were never
properly substituted for physical units.
## A quick scenario
Femi, before committing his savings to a small food business, listed every fixed cost he could
think of for a full month, including a few smaller recurring ones he almost forgot, and worked
out the direct cost of producing and packaging a single order, including a realistic estimate
for wastage. He divided his fixed costs by the contribution margin per order to get a specific
break-even number of orders per month, then checked that figure honestly against what he
believed the location and his existing network could realistically support before signing a
lease. When a supplier later raised prices, he redid the calculation rather than assuming his
original figure still held.
Bisi, opening a similar business, estimated her likely profit by comparing her expected monthly
revenue at a hoped-for sales volume against a rough sense of her costs, without separating fixed
from variable costs or working out a genuine contribution margin. She signed a lease based on
that rough sense of viability, without ever asking exactly how many orders she needed each
month just to cover her costs. Several months in, she still could not say with confidence
whether a slow week meant the business was in real danger or was simply an ordinary
fluctuation, because she had never established the specific number that separated the two.
## The bottom line
Working out a break-even point before starting a business replaces a hopeful guess about
profitability with a specific, checkable number: the exact level of sales at which the business
stops losing money, arrived at by separating fixed costs from variable costs, establishing what
each sale genuinely contributes after its own direct costs, and dividing one figure by the
other. The calculation is simple arithmetic once the cost lists are honest and complete, but it
is only as useful as those lists, and it needs revisiting whenever costs or prices change rather
than being treated as a one-time exercise done before launch and then forgotten.
## Frequently asked questions
**Do I need accounting software to calculate my break-even point?**
No. The calculation is simple division once you have an honest list of fixed costs and a clear
contribution margin per sale. A notebook or a basic spreadsheet is enough; accounting software
becomes more useful later, for ongoing tracking rather than this specific calculation.
**What if my business sells several different products at different prices?**
Calculate a contribution margin for each product, then work out a blended average based on the
mix you expect to sell, or calculate break-even separately for your main product and treat the
others as additional contribution once the main line covers your fixed costs. Either approach is
reasonable; the important part is not assuming one flat margin across genuinely different
products.
**How often should I redo the break-even calculation once the business is running?**
Redo it whenever a fixed cost changes meaningfully, such as a rent renewal, or whenever variable
costs shift, such as a supplier price change. Outside of specific triggers like these, revisiting
it every few months is a reasonable habit to keep the figure current.
**Is a lower break-even point always better?**
Generally yes, since a lower break-even point means less risk and a shorter path to
profitability, but it is worth checking why it is low. A very low fixed-cost base sometimes
means limited capacity to grow, so weigh break-even alongside your growth plans, not in
isolation.
**What if I cannot realistically hit the sales volume my break-even calculation requires?**
Treat this as valuable information gathered before committing money, not after. Revisit your
pricing, your cost base, or the scale of the business itself before proceeding, rather than
discovering the mismatch only after signing a lease or committing capital.
**Does break-even tell me how much profit I will make?**
No, it only tells you the point at which losses stop, not how much profit follows beyond that
point. Every sale above the break-even number contributes its full margin to profit, so once you
have the break-even figure, you can use the same contribution margin to estimate profit at any
sales volume above it.
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*This article is for general information only and does not constitute financial, accounting or
business advice. Every business has its own cost structure and market conditions; consult an
independent accountant before relying on any break-even calculation to make a financial
commitment.*
