Markup vs. Profit Margin: The Difference and a Costly Mistake

Two numbers that look at things differently

• Markup is based on cost: it’s the factor you multiply the cost by to get the price. A markup of 2 means selling for twice the cost.
• Margin is based on the price: it’s the portion of the price left after subtracting the cost (gross margin), or after also subtracting all expenses (net margin, or profit).

A product that costs $50 and sells for $100 has a markup of 2 and a gross margin of 50%. That’s not “100% and 50%” profit at the same time: they’re two ways of measuring the same $50 difference, using different bases.

The formulas

Some useful equivalents:

Example: a price that covers all costs and leaves a 10% profit

A product costs $50.00 (including shipping and packaging). The following expenses are based on the selling price:

• variable expenses of 12% (taxes, payment processing fees, and commission);
• 15% allocated for fixed expenses (rent, internet, and accounting, divided across revenue);
• desired profit of 10%.

Total: 37%. Price using the markup divisor: $50.00 ÷ (1 − 0.37) = $50.00 ÷ 0.63 = $79.37. The markup is 1.5873.

Here's the breakdown: Of the $79.37, $9.52 goes to variable expenses, $11.90 to fixed expenses, and $50.00 covers the cost, leaving about $7.94 in profit—the planned 10%.

The Markup Calculator does the math using your percentages and shows where every dollar from the sale goes.

The classic mistake: adding percentages to the cost

Many people calculate it this way: $50.00 cost + 37% = $68.50. It seems right, but expenses are charged on the price, not the cost. Here's what happens:

• 27% in expenses (variable + fixed) on $68.50 = $18.50;
• $68.50 − $50.00 − $18.50 = $0.00 profit.

The entire "10% profit" was eaten up by expenses calculated on a price higher than the cost. It's the same reason a 20% discount can't be undone with a 20% increase: the percentages are based on different amounts. To practice this, the Percentage Calculator shows increases, discounts, and percentage changes.

Contribution margin and break-even point

Another useful metric is the contribution margin: what each sale brings in after covering the cost and variable expenses. It pays for fixed expenses first, then becomes profit.

In the $79.37 example: $50.00 cost + $9.52 in variable expenses = $59.52. Contribution margin: $79.37 − $59.52 = $19.85 per unit (25% of the price).

If the business has $3,000.00 in fixed expenses per month, the break-even point is $3,000.00 ÷ $19.85 ≈ 152 units. Sell fewer than that and the month ends at a loss; each unit sold above that leaves $19.85 in profit.

This figure helps you check whether the 15% allocation for fixed expenses in your pricing is realistic: it only holds if you sell the volume used to calculate that allocation.

Pricing tips

• The percentages added together must stay well below 100%. At 100%, the formula divides by zero: no price can cover the costs.
• Review your fixed expense allocation when revenue changes. In slower months, each sale carries more fixed costs.
• Compare your price with the market. If your calculated price is much higher than the competition's, the problem is with your costs or expenses, not the formula.
• Include all applicable taxes in your variable expenses. Divide annual tax costs by expected revenue to find the percentage.
• Margin isn't money in your pocket if customers pay in installments and you get paid early: the early payment fee is also a variable expense.

Updated October 2026.

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