Markup vs Margin: The Difference That Costs Money

Quick answer

Both start from the same $40 of profit on an item that cost $60 and sold for $100. Markup divides by the cost ($60), margin divides by the price ($100). Because the price is always bigger than the cost, the margin percentage is always smaller than the markup percentage for the same sale.

What is markup?

Markup is how much you add on top of your cost, expressed as a percentage of that cost.

If a hardware store buys a drill for $60 and sells it for $100, the $40 added on is a 40 ÷ 60 × 100 = 66.7% markup. Markup answers "how much did I add to my cost?" — which is why it's the natural tool when you're *building* a price. You know what something cost you; you apply a markup to reach a selling price.

Retailers and wholesalers often think in markup because they buy at a cost and mark it up. "Keystone pricing" — doubling the cost — is simply a 100% markup.

What is margin?

Margin (profit margin) is how much of the *selling price* you keep as profit, expressed as a percentage of that price.

Same drill: 40 ÷ 100 × 100 = 40% margin. Margin answers "of the money that came in, how much did I keep?" — which is why it's the right tool for judging whether a business is healthy. It's directly comparable across products and against your overheads, because everything is measured against revenue. Our profit margin guide goes deeper on the three margin types.

Side by side: same sale, two percentages

The whole confusion lives in one picture. One sale, $40 of profit, two different denominators:

The profit didn't change. The item still cost $60 and still sold for $100. Only the number you divide by changed — and that's enough to turn "66.7%" into "40%". Neither is wrong; they're answers to different questions.

When to use markup

Reach for markup when you're setting a price from a known cost:

• You buy inventory at wholesale and need a shelf price. Apply your markup to the cost.
• You're quoting a job where materials have a clear cost and you add a standard uplift.
• You want a fast, repeatable pricing rule across many products ("everything is cost + 60%").

Markup is builder-friendly because you start with the cost you already know and add to it. The Markup Calculator turns a cost and a markup percentage straight into a selling price.

When to use margin

Reach for margin when you're judging profitability or comparing:

• Checking whether a product, service, or the whole business is healthy.
• Comparing profitability across items that have different costs.
• Setting a target you can hold against overheads ("I need to keep 45% of revenue to cover rent and pay myself").

Margin is the language of profit-and-loss statements and the number to quote when someone asks "how profitable is it?" Because it's measured against revenue, it's directly comparable everywhere. The Profit Margin Calculator reports margin, markup, and profit together so you can flip between the two views.

The conversion: markup ↔ margin

Because they share the same profit, you can convert between them. The formulas:

(Use the decimals — a 50% markup is 0.5, so margin = 0.5 ÷ 1.5 = 0.333 = 33.3%.)

You rarely need to do it by hand, though. Keep this table handy:

The pattern to memorize: markup is always the bigger number. So if a supplier or a pricing "rule of thumb" quotes you a markup, mentally shrink it to find the margin you'll actually keep.

The mistake that costs money

Here's how the confusion bites. Say you want to "make 40%" on a product that costs you $60.

• If you *mean* a 40% margin, the price should be 60 ÷ (1 − 0.40) = $100. You keep $40 of every $100.
• If you mistakenly apply a 40% markup instead, the price is 60 × 1.40 = $84. Your actual margin is only 24 ÷ 84 = 28.6%.

That's an $16 lower price and an 11-point lower margin on every single unit, all from mixing up two words. Across a year of sales, that's the difference between a comfortable business and a struggling one. Sort out which one you mean *before* you set the price, not after.

Discounting has the same trap in reverse — a "20% off" sale cuts more margin than owners expect. The Discount Calculator shows the real profit impact before you run a promotion.

Common mistakes

• Assuming they're the same. They never are. Markup always exceeds margin for the same sale.
• Quoting markup when someone means margin. In a conversation about profitability, "40%" almost always means margin. In a conversation about pricing from cost, it usually means markup. Confirm which.
• Setting a target margin by applying it as a markup. As shown above, this underprices you every time. Convert first, or use a tool that prices to a target margin.
• Comparing your markup to someone else's margin. Apples to oranges. Convert both to the same measure before you compare.

FAQs

Final take

Markup and margin come from the same profit but divide it differently — markup by cost, margin by price — so markup is always the larger percentage and the two are never interchangeable. Use markup to set prices from cost and margin to measure profitability, convert between them with the table above, and never apply a target margin as if it were a markup. Price with the Markup Calculator, check the result with the Profit Margin Calculator, and you'll never leave money on the table to a vocabulary mix-up again.