Markup vs Margin: The Difference Every Seller Should Know
Markup and margin are two ways of describing the same profit, measured against two different bases — and mixing them up is one of the most common and costly mistakes in pricing. A 50% markup is not a 50% margin. Get the two straight and you will price with confidence; confuse them and you will think you are making far more than you actually are.
The two definitions
Markup is profit measured as a percentage of cost. If an item costs 100 and you sell it for 150, the 50 profit is a 50% markup, because it is 50% of the 100 cost. Margin is that same profit measured as a percentage of the selling price. The same 50 profit on a 150 sale is a 33.3% margin, because it is 33.3% of the 150 price. Same money, two different percentages.
Why the gap matters
Markup is always a bigger-looking number than the equivalent margin, because cost is smaller than price. A 100% markup is only a 50% margin. A 25% markup is just a 20% margin. If you set prices thinking in markup but report profit in margin — or vice versa — you can badly overestimate how much each sale really earns, which is how shops end up busy but broke.
Quick conversions
- From markup to margin: margin = markup ÷ (1 + markup). A 50% markup becomes 0.5 ÷ 1.5 = 33.3% margin.
- From margin to markup: markup = margin ÷ (1 − margin). A 40% margin becomes 0.4 ÷ 0.6 = 66.7% markup.
- A handy anchor: 100% markup = 50% margin, and 25% margin = 33.3% markup.
Which should I use to set prices?
Use markup to set the price from a known cost — it answers how much to add on top. Use margin to judge profitability and compare products — it answers how much of each sale you keep. Most sellers price with markup and analyse with margin, which is exactly why knowing both is essential.
Why does my profit feel lower than my markup?
Because markup overstates profitability relative to the selling price. The money you actually keep per sale is the margin, which is always the smaller number. Judging the health of your business by markup alone makes it look rosier than it is.
The bottom line
Markup is profit over cost; margin is profit over price; they are never the same percentage. Use markup to build your price and margin to measure what you keep, and convert between them deliberately rather than assuming they match. Our free markup calculator does the conversion instantly so you never price on the wrong base.