90% Markup to Margin: a 90% markup is a 47.4% margin
If you add 90% to your cost, you are keeping 47.4% of every sale as gross profit. That gap between 90 and 47.4 is the single most common pricing mistake we see in small-business spreadsheets.
Check any cost at 90% markup
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The formula
90 ÷ 190 × 100 = 47.4%
Think of it as two questions about the same $47.48 sale. "How much did I add to my $24.99 cost?" is markup, 90%. "How much of the $47.48 do I keep?" is margin, 47.4%. Accountants, lenders and marketplaces almost always mean the second one.
Price table at 90% markup
Every row adds 90% to the cost. The margin column is the same on every line, 47.4%, because margin depends only on the percentage, not on the amount.
| Cost | Price at 90% markup | Gross profit | Margin |
|---|---|---|---|
| $5.00 | $9.50 | $4.50 | 47.4% |
| $10.00 | $19.00 | $9.00 | 47.4% |
| $25.00 | $47.50 | $22.50 | 47.4% |
| $50.00 | $95.00 | $45.00 | 47.4% |
| $100.00 | $190.00 | $90.00 | 47.4% |
| $250.00 | $475.00 | $225.00 | 47.4% |
| $500.00 | $950.00 | $450.00 | 47.4% |
| $1,000.00 | $1,900.00 | $900.00 | 47.4% |
| $2,500.00 | $4,750.00 | $2,250.00 | 47.4% |
| $10,000.00 | $19,000.00 | $9,000.00 | 47.4% |
Markups near 90%
From 80% to 100% markup the margin moves from 44.4% to 50%: each two-point step in markup is worth less than two points of margin at this level, and the gap widens as the markup grows. The multiplier column is what you type into a spreadsheet to price a cost list.
Worked example
Worked example. A product costs $24.99. Add 90%: $24.99 × 1.9 = $47.48. The gross profit is $47.48 − $24.99 = $22.49. As a share of cost that is 90% (the markup); as a share of price it is $22.49 ÷ $47.48 = 47.4% (the margin).
Why the two percentages differ
Retail buyers, marketplaces and investors quote margin, not markup. Tell them your product carries 90% and they will assume 90% of the price is profit; the truth at 90% markup is 47.4%, which changes how much discounting the line can absorb before it loses money.
When to use markup, when to use margin
Two moments call for 90% markup specifically: converting a supplier's cost price list into a retail list in one pass, and checking a competitor's likely cost when you know their price and the category's usual uplift. For everything that ends up in accounts, translate to the 47.4% margin.
If what you actually want is a 90% margin, the markup has to be 900%, not 90%. On a $24.99 cost that means a price of $249.90 instead of $47.48.
See the mirror page: what markup gives a 90% margin.