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Business7 min readMay 25, 2026

Markup vs. Profit Margin: The Critical Pricing Differences Every Entrepreneur Must Know

Compare markup vs profit margin side-by-side. Learn the formulas, common pricing mistakes, and how to protect business margins.

The Fatal Pricing Mistake for Startups

Confusing markup and margin is one of the most common—and expensive—mistakes small business owners and startup founders make. While both terms describe the relationship between your product's cost and its selling price, their mathematical calculations are completely different.

If you mistake a 50% markup for a 50% profit margin, you will underprice your products, erode your profits, and put your business at risk of running out of cash.

The Mathematical Calculations Compared

Here are the direct formulas and definitions for both pricing metrics:

  • Markup: The percentage added to your product cost to determine the selling price. Formula: Markup = ((Selling Price - Cost) / Cost) * 100
  • Profit Margin: The percentage of the selling price that is kept as profit. Formula: Profit Margin = ((Selling Price - Cost) / Selling Price) * 100
Note: Example: If a product costs $50 to make and you sell it for $100, your markup is 100%, but your gross profit margin is 50%.

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