Profit Margin & Markup Calculator

Profit margin and markup both measure profitability, but they use different denominators, and that is a steady source of confusion in business. Margin is revenue minus cost, divided by revenue, times 100, and it tells you what share of the selling price is profit. Markup is revenue minus cost, divided by cost, times 100, and it tells you how far above cost you have priced. The same transaction produces two very different numbers, since selling at £100 on a cost of £60 is a 40% margin but a 66.7% markup.

Converting between them is straightforward once you have the formulas. Margin equals markup divided by one plus markup, and markup equals margin divided by one minus margin. A 50% markup is a 33.3% margin, and a 100% markup is a 50% margin. Margin can never reach 100% while any cost remains, whereas markup passes it easily. The conversion matters in practice, because a target gross margin of 30% needs a 42.9% markup applied to cost, not 30%.

Two pricing methods follow from that. Cost-plus pricing multiplies cost by one plus the markup, so a £40 item with a 60% markup sells at £64. Margin pricing divides cost by one minus the margin, so the same £40 item at a 60% margin sells at £100. The gap between £64 and £100 on identical cost is the whole point, since a 60% margin requires a 150% markup. Confuse the two and you will undersell on every unit. Before settling on a price, check the margin still works after overheads, marketing and tax.

Three margins are worth tracking, and each answers a different question. Gross margin is revenue less cost of goods sold, divided by revenue, and reflects pricing power and production efficiency. Operating margin deducts overheads as well. Net margin is profit after tax divided by revenue. Follow one sale through a retailer: revenue of £100 against £60 of cost of goods gives a 40% gross margin. Take off £25 of rent, staff and marketing and £15 remains, a 15% operating margin. Take off £5 of interest and tax and £10 is left, a 10% net margin.

Benchmarks vary widely by sector. Supermarkets make 25 to 35% gross on food and 40 to 60% on non-food. Restaurants run 60 to 70% gross on food and 75 to 80% on drinks, and pubs 70 to 75% on beer. Clothing retail sits at 50 to 60%, manufacturing at 25 to 40%, construction at 15 to 25%, and consultancy or services at 50 to 75%. Software and technology are the outliers at 70 to 90% gross, because the marginal cost of another copy is close to nothing.

Net margins land far lower once every cost is counted, typically 5 to 15% for a mature business, above 20% for software and under 5% in retail and food service. British retail as a whole spans roughly 2 to 5% net for supermarkets against 50 to 70% gross for software, which is why the two figures should never be set side by side. Tracking margin by product line, by client and by period shows where a business generates value and where it quietly loses it.

VAT catches people out. Margins are worked out on net, VAT-exclusive prices for business purposes, so a consumer price needs the VAT stripped out first. A £120 gross price divided by 1.2 is £100 net, and against a £40 cost that leaves £60 of gross profit, a 60% margin. Do the sum on the gross figure and you get £80 divided by £120, which reads as 67% and overstates the margin by 7 points. UK sellers on Etsy or Amazon meet this daily, because a domestic customer pays VAT-inclusive prices and an overseas one does not, giving different margins on the same item.