Break-Even Sales Calculation for Small Businesses in India
How to calculate break-even sales and units with contribution margin, a worked ₹ example, cash break-even, target profit and what a price cut really costs you.
In this article
Break-even sales is the monthly or yearly revenue at which your business makes neither a profit nor a loss: break-even sales = fixed costs ÷ contribution margin ratio. If your fixed costs are ₹1.8 lakh a month and every ₹100 of sales leaves ₹36 after variable costs, you break even at ₹5 lakh of sales. Everything below explains how to get those inputs right and how to use the answer.
The three numbers you need
Break-even analysis rests on splitting every cost into one of two buckets.
- Fixed costs stay roughly the same whether you sell a little or a lot in the month: rent, staff salaries, the interest part of loan EMIs, software subscriptions, insurance, accountant fees and depreciation on equipment.
- Variable costs rise and fall with each unit sold: raw material, purchase cost of goods, packaging, sales commission, payment gateway charges, freight and delivery.
- Selling price per unit, net of GST and trade discounts.
From these you get the contribution per unit (price minus variable cost) and the contribution margin ratio (contribution ÷ price). Contribution is the money each sale "contributes" towards paying fixed costs; once fixed costs are covered, contribution becomes profit.
| Formula | What it tells you |
|---|---|
| Contribution per unit = Price − Variable cost per unit | Rupees each unit adds towards fixed costs |
| Contribution margin ratio = Contribution ÷ Price | Share of each ₹100 of sales left after variable costs |
| Break-even units = Fixed costs ÷ Contribution per unit | Units you must sell to avoid a loss |
| Break-even sales = Fixed costs ÷ Contribution margin ratio | Revenue needed to avoid a loss |
| Units for target profit = (Fixed costs + Target profit) ÷ Contribution per unit | Volume needed to earn a set profit |
| Margin of safety = (Actual sales − Break-even sales) ÷ Actual sales | How far sales can fall before you lose money |
If the difference between mark-up and margin trips you up when setting the price itself, read markup vs profit margin first.
Worked example: a small namkeen manufacturer
The figures below are illustrative. A unit in Indore makes and sells namkeen in 1 kg packs to distributors.
Monthly fixed costs
| Cost | ₹ per month |
|---|---|
| Factory rent | 40,000 |
| Salaries (5 staff) | 90,000 |
| Fixed electricity and maintenance | 10,000 |
| Interest on machinery loan | 12,000 |
| Depreciation on machinery | 15,000 |
| Accountant, software, insurance, misc. | 13,000 |
| Total fixed costs | 1,80,000 |
Per kg (all figures excluding GST)
- Selling price to distributor: ₹250
- Raw material: ₹120
- Packaging: ₹15
- Freight and distributor incentive: ₹25
- Variable cost: ₹160
Step 1 — contribution. ₹250 − ₹160 = ₹90 per kg. Contribution margin ratio = 90 ÷ 250 = 36%.
Step 2 — break-even units. ₹1,80,000 ÷ ₹90 = 2,000 kg a month.
Step 3 — break-even sales. ₹1,80,000 ÷ 0.36 = ₹5,00,000 a month. Check: 2,000 kg × ₹250 = ₹5,00,000.
Step 4 — target profit. The owner wants ₹60,000 of monthly profit before tax. Units needed = (₹1,80,000 + ₹60,000) ÷ ₹90 = 2,666.67, so 2,667 kg, or sales of about ₹6,66,667.
Step 5 — margin of safety. The unit currently sells 2,400 kg, that is ₹6,00,000 a month. Margin of safety = (₹6,00,000 − ₹5,00,000) ÷ ₹6,00,000 = 16.7%. Sales can drop by about one-sixth before the business slips into a loss. Current profit is 400 kg above break-even × ₹90 = ₹36,000 a month.
What happens when one number changes
Break-even is most useful as a "what if" tool. Using the same base case:
| Scenario | Contribution per kg | Fixed costs | Break-even kg | Change vs base |
|---|---|---|---|---|
| Base case | ₹90 | ₹1,80,000 | 2,000 | — |
| Price cut 10% to ₹225 | ₹65 | ₹1,80,000 | 2,769.2 | +38.5% |
| Raw material up ₹10/kg | ₹80 | ₹1,80,000 | 2,250 | +12.5% |
| Rent rises ₹20,000 | ₹90 | ₹2,00,000 | 2,222.2 | +11.1% |
| Price up 5% to ₹262.50 | ₹102.50 | ₹1,80,000 | 1,756.1 | −12.2% |
The price-cut row is the one most owners underestimate. A 10% discount sounds modest, but because it comes straight out of contribution, ₹90 falls to ₹65, a 27.8% drop. Break-even volume jumps from 2,000 kg to 2,769.2 kg (₹1,80,000 ÷ ₹65), and break-even revenue rises to about ₹6,23,077 (2,769.23 × ₹225). At its current 2,400 kg, the unit would go from ₹36,000 profit to a loss of (2,769.23 − 2,400) × ₹65 ≈ ₹24,000 a month unless the discount brings in at least 370 extra kg of orders.
The reverse is also true: a small price increase, if customers accept it, lowers break-even sharply.
Cash break-even: the number your bank account cares about
The accounting break-even above includes depreciation, which is not a cash payment, and excludes loan principal, which is. To find the sales level at which your bank balance stops falling, adjust fixed costs:
Cash fixed costs = Fixed costs − Depreciation + Loan principal repaid
For our namkeen unit, suppose the machinery loan EMI includes ₹25,000 of principal a month:
- Cash fixed costs = ₹1,80,000 − ₹15,000 + ₹25,000 = ₹1,90,000
- Cash break-even = ₹1,90,000 ÷ ₹90 = 2,111.1 kg, or about ₹5,27,778 of sales
So the unit can be profitable on paper at 2,050 kg and still see its cash shrink. That gap between profit and cash is explained in more detail in profit vs cash flow.
Cash break-even also ignores timing. If distributors pay 45 days after delivery, sales above break-even still need working capital until the money comes in.
Getting the inputs right
Use GST-exclusive figures
If you are registered under GST and claim input tax credit, the GST you charge is not your income and the GST you pay on inputs comes back as credit. Strip GST out of both price and cost before you calculate. The GST calculator converts a GST-inclusive price to its base value. If you are not registered, or you sell items whose input credit you cannot claim, the GST you pay on purchases is a real cost and belongs in variable cost.
Watch for semi-variable costs
Electricity, telephone and delivery vehicle running costs often have a fixed base plus a usage element. Split them: the minimum bill is fixed, the extra per unit is variable. If that is too fiddly, look at three to six months of bills and estimate the rise per extra unit sold.
Pay yourself first
For a proprietorship, the owner's salary is often missing from fixed costs, which makes the break-even look flattering. Add a realistic monthly draw for yourself; otherwise "break-even" just means you are working for free.
Multi-product businesses
Most shops sell many items with different margins. Use a weighted contribution margin ratio: total contribution for the month divided by total sales. If your product mix shifts towards low-margin items, break-even sales rise even if nothing else changes. Track it monthly alongside the other figures in monthly financial numbers for a small business.
Five ways to lower your break-even
- Raise contribution per unit through better buying, less wastage, smaller pack-size changes or a measured price increase.
- Shift fixed costs to variable where sensible, for example paying a delivery partner per order instead of keeping an idle vehicle.
- Cut idle fixed costs: unused space, subscriptions nobody uses, an extra shift that runs half-empty.
- Push higher-margin products in your sales mix and display.
- Refinance expensive debt to reduce the interest component of fixed costs.
Limits of break-even analysis
Break-even assumes price and variable cost per unit stay constant at every volume. In practice, bulk buying lowers raw-material cost, and very high volumes may need overtime or a second shift, which steps up fixed costs. Treat the result as a range, re-run it whenever costs move, and do not use it as a substitute for a cash-flow forecast.
Key takeaways
- Break-even sales = fixed costs ÷ contribution margin ratio; break-even units = fixed costs ÷ contribution per unit.
- Use GST-exclusive prices and costs if you claim input tax credit.
- In the illustrative example, ₹1.8 lakh fixed costs and a 36% contribution margin give a break-even of ₹5 lakh a month.
- A 10% price cut raised break-even volume by 38.5% in the example; discounts are expensive.
- Calculate a separate cash break-even that removes depreciation and adds loan principal.
- Recalculate whenever rent, wages, input prices or your product mix change.
Frequently asked questions
What is the formula for break-even sales?
Break-even sales equals fixed costs divided by the contribution margin ratio. The contribution margin ratio is selling price minus variable cost per unit, divided by selling price. For units, divide fixed costs by contribution per unit.
Should I include GST in break-even calculations?
No, if you are GST-registered and claim input tax credit. Use prices and costs excluding GST, because the GST you collect is owed to the government and is not your revenue.
Is loan EMI a fixed cost in break-even analysis?
Only the interest part of the EMI is a business expense in the profit-and-loss break-even. The principal part is a cash outflow, so it belongs in a separate cash break-even calculation.
What is a good margin of safety for a small business?
There is no fixed rule, but many owners are uncomfortable below about 15 to 20 percent, because a single bad month or one lost customer can push them into a loss. Seasonal businesses usually need a higher cushion.
How does a price discount change the break-even point?
A discount cuts the contribution per unit, so you need more units to cover the same fixed costs. A 10 percent price cut on a product with a 36 percent contribution margin raises the break-even volume by about 38 percent.
This article is for general education and is not personalised financial, tax or legal advice. Rates and rules are as of 19 Oct 2026; confirm current terms with your lender, AMC or a qualified adviser.
