Profit Margin vs Markup: What's the Difference?

Reviewed by Anas Rabja, Founder & Editor · Last reviewed June 2026

Margin and markup are two of the most confused terms in small business, and the confusion costs real money. Both describe the same profit on a sale, but they measure it against different numbers, so the percentages come out different. A shop owner who thinks a 50% markup means a 50% margin is quietly overestimating profit on every order. This guide makes the difference crisp, with formulas, a worked example, and a quick conversion table.

Same profit, different denominator

Start with the one thing they share: profit, which is simply your selling price minus your cost. If you buy an item for $60 and sell it for $90, your profit is $30. Markup and margin both describe that $30 — they just divide it by different things.

Because the selling price is always larger than the cost, dividing by the selling price gives a smaller percentage. For the same item, margin is always lower than markup.

Worked example: the $60 item

Using our $60 cost and $90 selling price, profit is $30. Now apply each formula:

• Markup: $30 ÷ $60 = 0.50 → 50% markup.
• Margin: $30 ÷ $90 = 0.333 → 33.3% margin.

The exact same sale is "50%" or "33.3%" depending on which word you use. If you priced this product believing 50% markup meant you kept half of every sale, you were off by a third. That gap is precisely where pricing mistakes hide.

Why the mix-up is expensive

Suppose you need a 40% margin to cover overhead and still profit, but you set prices using a 40% markup instead. A 40% markup only produces about a 28.6% margin — well short of your target. Run thousands of orders that way and you can lose money while believing every sale is healthy. The error is invisible on any single invoice, which is exactly what makes it dangerous.

Converting between the two

You can move between markup and margin with two short formulas:

A handful of common conversions worth memorizing:

• 25% markup = 20% margin
• 50% markup = 33.3% margin
• 100% markup = 50% margin
• To hit a 50% margin, you need a 100% markup

Which one should you use?

Both have a place. Markup is the convenient tool when you start from a known cost and want a fast selling price — multiply and you're done. Margin is the better measure of profitability, because it tells you what share of each dollar of revenue you actually keep, which is what you compare across products and report in your financials. Many businesses set prices with markup but track performance with margin.

Run the numbers automatically

Rather than juggle two formulas in your head, let a tool do it. Our Profit Margin Calculator takes your cost and selling price and shows the profit, the margin and the markup side by side, with the formulas it used. Enter a target margin and it works backward to the price you'd need to charge — the quickest way to make sure you never confuse the two again.

Frequently asked questions

What is the difference between margin and markup?

Both measure the same profit, but against different bases. Markup is profit as a percentage of cost; margin is profit as a percentage of the selling price. Since the selling price is larger than the cost, the margin percentage is always smaller than the markup for the same item.

Is a 50% markup the same as a 50% margin?

No. A 50% markup gives a 33.3% margin. Confusing the two makes you think you're earning more than you actually are — a common pricing mistake.

Which should I use to set prices?

Markup is convenient when you start from a known cost and want a quick selling price. Margin is better for judging profitability and comparing products, because it reflects how much of each sale you keep.

This article is for general education only and is not financial advice. Consult a qualified accountant for decisions about your business.