CalculateY
Markup vs margin: why they're different (and which to use)
A retailer buys a shirt for $20 and sells it for $30. The $10 difference is the same dollar amount whether you call it a 50% markup or a 33% margin. The difference is the denominator: markup divides by cost, margin divides by selling price. Mixing them up is the most common pricing mistake in small business, and it always results in underpricing.
The two formulas
\[\text{Markup \%} = \frac{\text{Price} - \text{Cost}}{\text{Cost}} \times 100\] \[\text{Margin \%} = \frac{\text{Price} - \text{Cost}}{\text{Price}} \times 100\]For the $20 shirt sold at $30:
\[\text{Markup} = \frac{30 - 20}{20} \times 100 = 50\%\] \[\text{Margin} = \frac{30 - 20}{30} \times 100 = 33.3\%\]Same shirt, same prices, both numbers are correct. They answer different questions.
What each one means
Markup answers: “How much did I add on top of what it cost me?” The base is cost. Markup is forward-looking from the supplier’s invoice.
Margin answers: “What share of every sale do I keep before overhead?” The base is the selling price. Margin is backward-looking from the customer’s payment.
Both are valid. The right one to use depends on which question you are trying to answer.
Conversion between the two
The two metrics are mathematically related:
\[\text{Margin} = \frac{\text{Markup}}{1 + \text{Markup}}\] \[\text{Markup} = \frac{\text{Margin}}{1 - \text{Margin}}\]A reference table for common values:
| Markup | Margin |
|---|---|
| 10% | 9.1% |
| 20% | 16.7% |
| 25% | 20% |
| 33.3% | 25% |
| 50% | 33.3% |
| 75% | 42.9% |
| 100% | 50% |
| 150% | 60% |
| 200% | 66.7% |
| 300% | 75% |
| 400% | 80% |
| 500% | 83.3% |
Notice that markup is always larger than margin for the same dollar amount. They converge toward each other only at very low values. At a 5% markup, margin is 4.8%; the difference is small. At a 100% markup, margin is 50%; the gap is wide.
The pricing mistake this causes
A retailer wants a 40% margin on every product. The supplier delivers items at $60 each. The retailer applies a 40% markup, thinking that produces a 40% margin:
\[\text{Price} = 60 \times 1.40 = \$84\]The actual margin on this product:
\[\text{Margin} = \frac{84 - 60}{84} \times 100 = 28.6\%\]The retailer wanted 40% margin and got 28.6%. To actually achieve a 40% margin, the markup needed to be 66.7%:
\[\text{Price} = 60 \times 1.667 = \$100\]Verifying: ($100 - $60) / $100 = 40%. The right price was $100, not $84. The retailer left $16 of margin on every unit because of the markup-vs-margin confusion.
Across a year of inventory turns, a percentage point or two of margin compounds into significant lost profit. A business doing $1M in revenue loses $10,000 in profit for every percentage point of margin.
Which one to use, by industry
Different industries default to different conventions:
Markup is standard in:
- Retail (especially apparel and general merchandise)
- Wholesale and distribution
- Restaurants (food cost markup)
- Construction and trade contracting
- Auto dealerships
Margin is standard in:
- Software and SaaS
- Professional services and consulting
- Manufacturing (gross margin reporting)
- Public company financial statements
- Investment analysis
The standards exist because each industry’s mental model is different. A retailer thinks “I bought it for $20, what should I add?” so markup feels natural. A SaaS founder thinks “we billed $1M, how much do we keep?” so margin feels natural.
Inside any single business, pick one and use it consistently. The worst outcome is mixing them in the same conversation.
Using each one in practice
Markup is best for:
- Setting prices when starting from a known cost
- Industries where supplier costs are the primary input variable
- Quick mental math at the register or in the field
- Pricing rules of thumb (keystone pricing = 100% markup = 50% margin)
Margin is best for:
- Comparing profitability across products with different cost structures
- Financial reporting and management
- Comparing your business to industry benchmarks
- Setting target profitability for the business overall
A coffee shop owner might quote markup when pricing a new menu item (“we mark up food cost 4x”) but quote margin when reporting to investors (“our gross margin is 75%”). Both are right.
Worked example: pricing for a 50% margin
A craft seller wants every product to produce a 50% gross margin. Three products with different costs:
| Product | Cost | Required price | Markup applied |
|---|---|---|---|
| Small candle | $4 | $8 | 100% |
| Medium candle | $7 | $14 | 100% |
| Gift set | $25 | $50 | 100% |
For a 50% margin, the markup is always 100%. The seller can use either rule with the same result.
Now compare to a seller who wants a 40% margin:
| Product | Cost | Required price | Markup applied |
|---|---|---|---|
| Small candle | $4 | $6.67 | 66.7% |
| Medium candle | $7 | $11.67 | 66.7% |
| Gift set | $25 | $41.67 | 66.7% |
For a 40% margin, the markup is 66.7%. Applying a 40% markup instead would only produce a 28.6% margin, dropping the small candle’s price to $5.60 and shorting profit by $1.07 per unit.
Quick check
To see whether someone is talking about markup or margin in conversation, ask what the denominator is. If they divide by cost, it is markup. If they divide by selling price, it is margin. If they divide by anything else, they are probably making it up.
Use the markup calculator to convert between the two and verify any pricing decision before applying it. The profit margin calculator does the same in reverse, starting from a target margin.