Which one should I actually use when pricing?

Either works — what matters is being consistent and clear about which one you're using. Margin is usually more useful for understanding overall business health (it maps directly to gross profit as a percentage of revenue). Markup is more common in retail and wholesale, where pricing is built up from a known cost.

Why does the gap get bigger at higher percentages?

Because markup is calculated on the smaller number (cost) and margin on the larger one (price), and price grows faster than cost as you push the percentage up. At 10%, margin and markup are close (9.1% vs. 10%). At 50%, they're wildly different (33.3% vs. 50%). At 90% margin, the equivalent markup is 900%.

I've seen software list a 'margin' that doesn't match my own math. Why?

Check what's included in 'cost.' Some tools use only direct product cost (COGS); others fold in a share of overhead, shipping, or payment processing fees. Two tools calculating 'margin' on the same sale can produce different numbers if they're not counting the same costs as 'cost.' Always check the definition before comparing numbers across tools.

Does this apply to service businesses, not just products?

Yes — 'cost' just means whatever scales with delivering one more unit of the service: your time valued at a rate, subcontractor fees, software seats tied to client count. The math is identical; only what counts as cost changes.

Pricing & unit economics

Margin vs. Markup: Why a 50% Markup Isn't a 50% Margin

Markup is profit divided by cost. Margin is profit divided by price. Mixing them up is one of the most common — and most expensive — pricing mistakes a small business makes.

5 min read · Published May 2026

Key Takeaways

Markup is profit as a percentage of cost. Margin is profit as a percentage of price. They use the same profit number, but divide by something different.
A 50% markup on a $100 cost prices at $150 — but that's only a 33% margin, not 50%.
A 50% margin on that same $100 cost requires pricing at $200 — a 100% markup.
The two numbers converge at low percentages and diverge fast at high ones — the confusion gets more expensive the more aggressively you price.
If a pricing spreadsheet, a business plan, or a partner mentions a percentage, always confirm which one is meant before doing anything with the number.

The mix-up that costs real money

“I want a 50% margin” and “I want a 50% markup” sound like the same instruction. They’re not — and the difference between them, applied across a year of pricing decisions, is a meaningful amount of money left on the table or given away.

Both numbers start from the same two inputs — cost and price — but divide by a different one of them.

	Markup	Margin
Formula	Profit ÷ Cost	Profit ÷ Price
Answers	“How much did I add on top of cost?”	“What share of the sale price is profit?”
Common in	Retail, wholesale, manufacturing	Financial statements, overall business health

The same numbers, two different answers

Take a $100 cost item and price it two different ways:

Target a 50% markup: price = cost × 1.5 = $150. Profit is $50. As a share of the $150 price, that’s a 33.3% margin — not 50%.
Target a 50% margin: price = cost ÷ (1 − 0.5) = $200. Profit is $100. As a share of the $100 cost, that’s a 100% markup — not 50%.

Same cost, same intended “50%,” and a $50 difference in the actual price you should be charging depending on which one you meant.

The gap widens as the percentage grows

At small percentages, margin and markup are close enough that mixing them up barely matters — a 10% markup is a 9.1% margin. But the gap compounds fast: 30% markup is 23.1% margin, 50% markup is 33.3% margin, and 100% markup is only a 50% margin. The more aggressively you price, the more expensive the confusion gets.

Why this actually matters

This isn’t just semantics. If you tell a bookkeeper, a partner, or a spreadsheet formula “I need a 40% margin to hit my profit targets” and someone builds pricing off a 40% markup instead, you’ll come in under your real target — every single sale, quietly, for as long as the mistake goes unnoticed. At volume, that’s not a rounding error.

It also matters when comparing yourself to industry benchmarks. If an industry report cites a “35% margin” as typical and you’ve been pricing to a 35% markup, you’re actually running below the benchmark, not at it.

Price from a real target, either way

Enter a cost and a target margin or markup, and see both numbers next to each other.

Calculate margin & markup

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Frequently asked

Questions owners actually ask

Which one should I actually use when pricing?: Either works — what matters is being consistent and clear about which one you're using. Margin is usually more useful for understanding overall business health (it maps directly to gross profit as a percentage of revenue). Markup is more common in retail and wholesale, where pricing is built up from a known cost.
Why does the gap get bigger at higher percentages?: Because markup is calculated on the smaller number (cost) and margin on the larger one (price), and price grows faster than cost as you push the percentage up. At 10%, margin and markup are close (9.1% vs. 10%). At 50%, they're wildly different (33.3% vs. 50%). At 90% margin, the equivalent markup is 900%.
I've seen software list a 'margin' that doesn't match my own math. Why?: Check what's included in 'cost.' Some tools use only direct product cost (COGS); others fold in a share of overhead, shipping, or payment processing fees. Two tools calculating 'margin' on the same sale can produce different numbers if they're not counting the same costs as 'cost.' Always check the definition before comparing numbers across tools.
Does this apply to service businesses, not just products?: Yes — 'cost' just means whatever scales with delivering one more unit of the service: your time valued at a rate, subcontractor fees, software seats tied to client count. The math is identical; only what counts as cost changes.

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Educational content only. This article is for informational purposes and does not constitute tax, legal, or financial advice. Every situation is different — consult a qualified professional before acting on anything here.