Break-even point:
how many sales cover your costs

What is the break-even point?

The break-even point is the level of sales at which your total revenue exactly equals your total costs. Below it you make a loss; above it, every extra sale adds to profit. It is usually stated in units (cups, shirts, bookings) or in rupees of revenue.

A business can be busy and still lose money. If each sale leaves too little after its own direct costs, the shortfall never covers rent, salaries and software subscriptions, however long the queue.

The whole calculation rests on one split. Fixed costs stay roughly the same whatever you sell in the period. Variable costs rise with every unit sold.

Some costs sit in between. An electricity bill has a standing charge and a usage part, so split it: the standing charge is fixed, the usage part is variable. Doing that split honestly is most of the work in a break-even analysis.

Break-even point formula for units and revenue

To find break-even units, divide your fixed costs by the amount each unit leaves after its own variable cost. That leftover is the contribution margin per unit, because it contributes towards fixed costs and then profit.

Think of each sale as a small payment towards a bill. The bill is your fixed cost, and the size of each payment is the contribution. A larger payment per sale clears the bill sooner, which is why price and unit cost move break-even so strongly.

The two formulas describe the same point in different units. Multiply break-even units by the selling price and you arrive at break-even revenue.

How to calculate the break-even point step by step

1. 1Pick one period, usually a month, and list every fixed cost for that period.
2. 2Work out the selling price you really receive per unit after typical discounts.
3. 3Add up the variable cost of one unit: ingredients, packaging, delivery, gateway fees.
4. 4Subtract variable cost from price to get the contribution per unit.
5. 5Divide fixed costs by the contribution per unit and round up to a whole unit.

Write the assumptions next to the answer so that someone else, or you in six months, can see what was included. Assumptions that are written down get checked, while assumptions that are not tend to drift without anyone noticing.

Keep the period consistent. If rent is quoted yearly, divide it by twelve before mixing it with monthly salaries and electricity bills.

Worked example: a coffee counter for one month

A small coffee counter pays ₹60,000 a month in rent, salaries and utilities. Each cup sells for ₹150 and costs ₹60 in ingredients, cup and lid.

At 667 cups, revenue is ₹1,00,050 and variable costs are ₹40,020. The remaining ₹60,030 covers the ₹60,000 of fixed costs and leaves ₹30. Taxes and any cost not listed above are left out of this illustration.

Expressed as revenue, the same point is ₹60,000 ÷ 0.60 = ₹1,00,000. The whole-cup figure is slightly higher because you cannot sell two-thirds of a cup.

A monthly number is easier to act on when you turn it into a daily one. If the counter opens 26 days a month, 667 ÷ 26 = 25.7, so about 26 cups a day is the line between a loss and a profit.

Now suppose you expect to sell 900 cups. The margin of safety is (900 − 667) ÷ 900 = 25.9%, meaning sales can fall by about a quarter before the counter starts losing money. A small margin of safety means a slow month hurts quickly; a large one gives you room to breathe.

Notice what the number does not say. It does not say you will sell 667 cups, only that you must. Compare it with footfall, a realistic conversion of passers-by and the counter's capacity during peak hours before you commit to the rent.

How price, cost and profit targets move the break-even point

A higher price lowers the number of cups you must sell, but only if customers keep buying. Break-even tells you what is required, not what the market will accept.

For a target of ₹30,000 a month at ₹150 a cup, you need (₹60,000 + ₹30,000) ÷ ₹90 = 1,000 cups.

Costs matter just as much. If ingredients rise from ₹60 to ₹70 a cup, contribution drops to ₹80 and break-even climbs from 667 to 750 cups.

Break-even for an online shop or a service business

The formula does not care what you sell. For a product seller, put everything that scales with an order into variable cost: the product, packaging, courier charges, returns allowance and marketplace commission.

Take an online t-shirt store with ₹45,000 of monthly fixed costs for software, a part-time designer and baseline ad spend. Each shirt sells for ₹799 and costs ₹450 to print, pack and ship, so contribution is ₹349.

Break-even is ₹45,000 ÷ ₹349 = 128.9, rounded up to 129 shirts a month. If advertising is a variable cost for you, say a fixed amount per order, move it into the variable column and recalculate.

For a service business, use billable hours or projects as the unit. Divide monthly fixed costs by the contribution of one billable hour after any direct costs, and compare the result with the hours you can realistically sell in a month.

Mistakes that make break-even numbers misleading

• Using the list price when most sales happen at a discount, through a marketplace or with a coupon.
• Treating wages as fixed when staff are paid per shift or per order.
• Forgetting step costs: a second counter or another employee raises fixed costs once you pass a capacity level.
• Selling several products and using one price; use the average contribution of your sales mix instead.
• Mixing periods, such as annual rent with monthly sales.

Recalculate whenever rent, prices, wages or supplier rates change. A break-even figure from last year is a guess about this year.

It also helps to run the number three ways: with your current price, with the discounted price you offer during sales, and with a cost increase of a few rupees per unit. If break-even moves a long way in any of them, that is the assumption to watch closely.