Pricing your margins: gross margin vs markup, explained without confusion

Ask two people in the same business what their margin is and you may get two different answers for the same product. One is quoting markup, the other gross margin. Both figures describe the same pound of profit, but they measure it against different bases, so the percentages differ. Mixing them up is one of the most common pricing errors in small businesses, and it quietly costs money on every sale.

This guide explains both measures, shows how to convert between them, and gives a simple method for setting prices that hit the margin you actually want.

Two ways to describe the same profit

Take a product that costs £12 and sells for £18. The gross profit is £6. That fact does not change. What changes is the number you divide it by.

• Markup is profit as a percentage of cost: £6 divided by £12 = 50%.
• Gross margin is profit as a percentage of the selling price: £6 divided by £18 = 33.3%.

Because the selling price is always larger than the cost when you make a profit, margin is always the smaller of the two figures. A 50% markup is a 33.3% margin. A 100% markup is a 50% margin. A 40% markup is not a 40% margin.

Markup is handy at the point of pricing, because you start from a cost. Margin is what appears on your profit and loss account, because gross profit there is shown as a share of revenue. Investors, lenders and accountants almost always mean margin when they say “gross margin”.

The formulas

• Gross profit = selling price minus cost
• Markup = gross profit divided by cost
• Gross margin = gross profit divided by selling price
• Margin from markup: margin = markup divided by (1 + markup)
• Markup from margin: markup = margin divided by (1 minus margin)
• Price for a target margin: price = cost divided by (1 minus target margin)

The last formula is the one to remember. If a product costs £12 and you want a 50% gross margin, the price is £12 divided by 0.5, which is £24. Check it: £12 profit on a £24 price is 50%.

A quick conversion table

The gap widens as margins rise. At high margins, small changes in margin need large changes in markup, which is why premium brands often talk in multiples of cost (“we price at four times landed cost”, which is a 75% margin).

The classic mistake, worked through

An example (illustration only): a homeware seller buys a cushion for £12, including shipping to her unit and import duty. She wants a 40% gross margin, so she adds 40% to cost and prices at £16.80.

Her actual margin is £4.80 divided by £16.80, which is 28.6%. She is about 11 percentage points short of her target on every cushion. If she sells 2,000 cushions a year, the correct price of £20 (that is, £12 divided by 0.6) would have earned her £8 per cushion instead of £4.80, an extra £6,400 of gross profit for the same effort.

Now add a discount. At the correct £20 price, a 20% sale takes the price to £16. Profit falls to £4, and the margin drops to 25%. Discounts cut straight into margin because the cost does not fall with the price. A 20% discount on a 40% margin product removes half of the gross profit.

Getting the cost right

A margin is only as good as the cost behind it. For a product business, use the full landed cost of getting a sellable unit into stock:

• the supplier price
• inbound freight and insurance
• import duty and customs fees, where they apply
• any packaging that is part of the product

Gross margin on your accounts deducts cost of goods sold, which normally covers these direct costs. It does not include rent, salaries or office costs. Some sellers also deduct the costs of each sale, such as payment fees, marketplace commission and outbound delivery, to get a contribution margin. That is a more honest figure for online sellers, but label it clearly so nobody compares it with a competitor’s gross margin.

If you are VAT or GST registered, work with prices and costs excluding the tax. A £24 price including 20% UK VAT is £20 of revenue to you. Calculating margin on the VAT-inclusive price overstates it.

A pricing routine that avoids confusion

1. Agree one language in the business. Decide that “margin” always means gross margin on selling price, and say “markup” only when you mean markup on cost.
2. Calculate the landed cost per unit, excluding recoverable VAT.
3. Choose a target gross margin by category, based on your overheads, competitor prices and what customers will pay.
4. Set the price with price = cost divided by (1 minus target margin), then round to a sensible price point.
5. Recalculate the actual margin at the rounded price.
6. Model your usual discounts and marketplace fees to see the margin you really keep.
7. Review when supplier costs, freight or exchange rates change.

When each measure helps, and its limits

Use markup when you are building a price from a known cost and want a quick rule. Cost-plus pricing (adding a fixed markup to cost) is simple, easy to explain and common in retail and contract work. Use margin when you are reading accounts, comparing products or comparing your business with others, because margin ties directly to revenue and to your profit and loss account.

Neither measure tells you whether the price is right. Cost-plus pricing ignores what customers will pay and what competitors charge, so a product can carry a healthy markup and still not sell, or sell out instantly at a price far below what the market would bear. Use cost to set a floor, then look at demand and competitors to decide where above that floor you should sit.

A high percentage is also not the whole story. A product with a 70% margin that sells ten units a month may earn less gross profit than one with a 30% margin that sells five hundred. Track gross profit in pounds alongside the percentage, and you will make better decisions about which products to push.