Markup and margin are not the same number
Why a 50% markup is a 33.3% margin, how the confusion quietly destroys pricing, and the conversion to keep in your head.
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In short
- Markup is measured against cost. Margin is measured against selling price. They are never equal above zero.
- A 50% markup is a 33.3% margin. A 50% margin needs a 100% markup.
- Pricing to a "40% margin" by adding 40% to cost gives you 28.6% and a shortfall you may not notice for months.
- Margin is the right measure for reporting, because it is the share of revenue you keep.
- Markup is the right tool for pricing, because cost is what you know at the moment you set a price.
Both describe the same gap between what something cost and what it sold for. They differ only in what they divide that gap by, and that single difference is one of the most expensive misunderstandings in small business.
markup = (price − cost) ÷ cost
margin = (price − cost) ÷ price
Cost below, or price below. Nothing else.
A worked example
An item costs ₹100 and sells for ₹150. The gross profit is ₹50.
Markup is 50 ÷ 100 = 50%.
Margin is 50 ÷ 150 = 33.3%.
Same item, same profit, two figures that differ by nearly seventeen points. Neither is wrong. They answer different questions: markup asks how much you added to cost, margin asks what share of the sale you kept.
Because the price is always larger than the cost when you are profitable, the margin is always the smaller number. Anyone quoting a percentage without saying which measure it is is quoting an ambiguous figure.
The conversion table
| Markup | Margin |
|---|---|
| 10% | 9.1% |
| 20% | 16.7% |
| 25% | 20.0% |
| 33.3% | 25.0% |
| 50% | 33.3% |
| 66.7% | 40.0% |
| 100% | 50.0% |
| 150% | 60.0% |
| 233% | 70.0% |
| 400% | 80.0% |
The formulas:
margin = markup ÷ (1 + markup)
markup = margin ÷ (1 − margin)
Read the table upward from the right-hand column and the practical point becomes clear: high margins require very high markups. A 70% margin — normal in software and in some cosmetics — needs the price to be more than three times cost.
The mistake, and what it costs
A shop owner decides they need a 40% margin. They take an item costing ₹100 and add 40%, selling it at ₹140.
Their actual margin is 40 ÷ 140 = 28.6%.
To achieve 40% they needed to sell at 100 ÷ (1 − 0.40) = ₹166.67, a 66.7% markup.
The shortfall is 11.4 points of margin on every unit. On ₹50 lakh of annual revenue that is roughly ₹5.7 lakh of profit that was planned for and never arrived — and because every individual sale looks profitable, nothing signals the error. It surfaces at the year end as an unexplained gap between expected and actual profit.
This is the single most common pricing error in retail, food service and small manufacturing, and it is entirely mechanical.
Which to use, and when
Use markup to set prices. At the moment of pricing, cost is the number you have. Multiplying it is direct: price = cost × (1 + markup).
Use margin to report and compare. Margin is a share of revenue, so it sits naturally in a profit and loss statement, is comparable across products of very different costs, and is what an investor, a lender or a benchmark will mean.
The workflow that avoids the whole problem: decide the margin you need, convert it to the markup that produces it, then price from cost.
price = cost ÷ (1 − target margin)
That formula does both steps at once and is the one worth committing to memory.
Typical margins by sector
| Sector | Gross margin |
|---|---|
| Grocery retail | 10–15% |
| Consumer electronics | 5–10% |
| Apparel retail | 40–60% |
| Restaurants, food cost | 60–70% |
| Jewellery | 15–25% |
| Software and SaaS | 70–85% |
| Pharmacy | 15–25% |
Low margins are not a sign of a bad business. Grocery and electronics turn stock over many times a year, and margin multiplied by turnover is what actually produces profit. A 10% margin on stock sold twelve times a year beats a 50% margin on stock sold once.
That product — gross margin return on inventory — is the number that ranks retail categories honestly, and it is why comparing margins across sectors without turnover tells you almost nothing.
Discounts eat margin faster than revenue
A discount comes entirely out of profit, which makes its effect on margin disproportionate.
On an item costing ₹100 and priced at ₹150:
| Discount | Price | Profit | Margin |
|---|---|---|---|
| 0% | ₹150 | ₹50 | 33.3% |
| 10% | ₹135 | ₹35 | 25.9% |
| 20% | ₹120 | ₹20 | 16.7% |
| 30% | ₹105 | ₹5 | 4.8% |
| 33% | ₹100 | ₹0 | 0% |
A 10% discount cuts profit by 30%. A 30% discount cuts it by 90%. At a 33.3% margin, a 33% discount is the point at which you are working for nothing.
The corollary is the volume question. To make the same total profit after a 20% discount, you would need to sell two and a half times as many units. That is the number to establish before agreeing to a sale, and it is rarely achievable.
Gross, operating and net
Markup and margin as described here are gross — price against the direct cost of the goods.
Operating margin subtracts rent, salaries, marketing and other overheads. Net margin subtracts interest and tax as well, and is what actually reaches the owner.
A 33% gross margin can easily be a 5% net margin once overheads are paid, which is why gross margin alone never answers whether a business is viable. It answers whether the pricing works; the other two answer whether the business does.
Where cost is harder than it looks
The formulas assume you know the cost, and in practice that is where errors enter.
Landed cost, not invoice cost. Freight, customs duty, insurance and the non-creditable share of taxes all belong in cost. An imported item invoiced at ₹100 may land at ₹128.
Wastage and shrinkage. In food and fresh produce, a portion of every purchase is never sold. If 10% is wasted, the effective cost of what does sell is 11% higher than the purchase price.
Returns. A returned item that cannot be resold turns its whole cost into a loss which the remaining sales must cover.
Payment costs. Card and gateway fees of 1.5% to 2.5% come off the price, not the cost, and reduce the realised margin directly.
Getting the cost wrong makes both the markup and the margin wrong in the same direction, and no amount of care with the percentages will recover it.
Keystone and other pricing habits
Retail has a shorthand vocabulary for markups, and it is worth translating.
Keystone means doubling the cost — a 100% markup, therefore a 50% margin. It survives because it is arithmetically effortless and because in traditional retail it covered rent, staff and shrinkage with something left over.
Triple keystone, common in fashion and jewellery, is a 200% markup and a 66.7% margin, sized to absorb heavy end-of-season discounting.
Cost-plus is the same idea named differently and is common in government contracting and in manufacturing, where a fixed percentage is added to a verified cost.
None of these is a pricing strategy so much as a starting point. What a customer will pay is set by the alternatives available to them, not by what the item cost you — which is why a rule-of-thumb markup can leave money on the table on a differentiated product and price you out of the market on a commodity one.
Mixed baskets and blended margin
Where a business sells many items at different margins, the figure that matters is the blended margin across what actually sold, not the average of the margins on the price list.
A shop with a 60% margin on accessories and a 10% margin on devices does not have
a 35% margin. If devices are 90% of revenue, the blended margin is 0.9 × 10 + 0.1 × 60 = 15%.
This is a weighted mean, and getting it wrong in the optimistic direction is routine. It also explains why the mix matters as much as the pricing: shifting five points of revenue from devices to accessories raises the blended margin by 2.5 points without changing a single price.
What this calculator assumes
- Cost is the direct cost of the goods, and it is your responsibility to include freight, duty, wastage and any non-recoverable tax.
- Margin and markup are both gross figures, before overheads, interest and tax.
- Prices are exclusive of GST. Tax collected is not revenue and does not belong in either calculation.
- Conversions between the two are exact, using the formulas above.
- A margin of 100% or more is impossible, and a cost of zero is reported as an error rather than as an infinite markup.