Markup measures profit relative to cost. Margin measures profit relative to selling price. The same percentage therefore produces different selling prices. If an item costs ₹800, a 25% markup gives a ₹1,000 selling price, while a 25% margin requires approximately ₹1,066.67.
The arithmetic is simple, but the terminology can create expensive quoting mistakes. A salesperson told to “keep 25%” needs to know whether the target is on cost or on revenue, and which costs the target is meant to cover.
Use the right denominator
For a defined cost and selling price, markup equals selling price minus cost, divided by cost. Margin equals selling price minus cost, divided by selling price. Multiply either result by 100 to express a percentage.
An illustrative Pune electrical wholesaler buys a fitting for ₹800 and sells it for ₹1,000, on a consistent basis before separately handled taxes. The ₹200 difference is 25% of the ₹800 cost but only 20% of the ₹1,000 selling price. Both percentages describe the same transaction.
The direct selling-price formulas are:
- Price for a markup: cost multiplied by one plus the markup rate.
- Price for a margin: cost divided by one minus the margin rate.
Use decimal rates in the formulas. A 25% target means 0.25. A 100% margin on a positive-cost item cannot be produced by this formula at a finite selling price.
Compare common targets side by side
| Cost of fitting | Quoting instruction | Selling price | Difference over cost | Resulting margin |
|---|---|---|---|---|
| ₹800 | Add 20% markup | ₹960 | ₹160 | 16.67% |
| ₹800 | Add 25% markup | ₹1,000 | ₹200 | 20% |
| ₹800 | Keep 25% margin | ₹1,066.67 | ₹266.67 | 25% |
| ₹800 | Keep 30% margin | ₹1,142.86 | ₹342.86 | 30% |
Rounded selling prices change the realised percentage slightly. If the wholesaler rounds ₹1,066.67 down to ₹1,060, margin becomes ₹260 divided by ₹1,060, or about 24.53%. Check the rounded quote rather than assuming the target still holds exactly.
To convert markup into margin, divide the markup rate by one plus that rate. To convert margin into markup, divide the margin rate by one minus that rate. Thus a 25% margin requires a 33.33% markup, while a 25% markup gives a 20% margin.
Decide what the cost includes
The formula cannot repair an incomplete cost base. If ₹800 is only the supplier's price and the business also spends ₹20 on inward transport and ₹30 on sale-specific packing and delivery, a price based on ₹800 leaves less than expected after those additional expenses.
For pricing decisions, show purchase cost, landed acquisition cost and transaction costs separately. State whether the target is gross margin on stock cost, contribution after variable selling costs, or profit after allocated overheads. These are different measures and should have different labels.
ICAI's costing material distinguishes cost collection and managerial pricing decisions. It does not mean one percentage can replace a complete cost structure. A healthy difference between sales and purchase cost must still fund the operating expenses outside that purchase figure.
See how discounts affect the result
Suppose the fitting is quoted at ₹1,000 with an ₹800 cost. A 10% discount reduces the price to ₹900, leaving ₹100. The original 20% margin becomes approximately 11.11%, and markup falls from 25% to 12.5%.
The discount removes half the rupee difference even though it is only 10% of the quoted price. To preserve the original ₹200 difference at a ₹900 price, cost would need to fall to ₹700. Do not subtract the discount percentage from markup or margin and assume the answer is correct.
Where a fee is charged as a percentage of sales, include it explicitly. If a channel charges 5% of the selling price and the business wants a 20% contribution margin after that fee on an ₹800 variable cost, price is ₹800 divided by 0.75, or ₹1,066.67. The denominator reserves 5% for the fee and 20% for contribution.
What happens when the cost itself changes?
Suppose the wholesaler keeps the ₹1,000 price while fitting cost rises from ₹800 to ₹850. The difference falls to ₹150, making margin 15% and markup approximately 17.65%. A static selling price does not preserve either percentage when the cost base changes.
Set a review trigger for significant supplier revisions rather than waiting for the annual price-list exercise. Where old and new stock coexist, state which cost basis the pricing decision uses. A replacement-cost planning view can differ from the inventory cost used in the accounts. The quotation team needs an approved basis, not several unexplained “cost” figures for the same item.
Prevent quoting errors in everyday work
Put the target type beside the percentage on price lists and approval sheets. Replace “profit 25%” with a specific instruction such as “25% margin on net sales after the listed landed cost.” Give staff a worked example using an actual familiar item.
Protect formulas from accidental overwriting and test them with one easy round-number case. If an item costing ₹100 at a stated 20% margin produces a ₹120 price, the sheet is applying markup instead. The correct price is ₹125.
Review realised percentages after credit notes, discounts and selling fees. Set approval thresholds using the same cost basis throughout the business. Clear definitions make price decisions faster because everyone can see what the quoted percentage actually leaves to cover overheads and profit.
Keep purchase rebates consistent with your chosen cost basis. If an annual supplier rebate remains uncertain, do not silently reduce every quotation cost by the best possible rebate. Show the confirmed cost and the conditional benefit separately. This prevents a margin target from depending on a purchasing volume that the business may never reach.