The $10 confusion that costs sellers money
A product costs $50 and sells for $80. The profit is $30. Measured against the $80 price, that $30 is a 37.5% margin. Measured against the $50 cost, it is a 60% markup. Same sale, two different numbers, and they are not interchangeable.
This trips up sellers constantly. Apply a "50% markup" while expecting a "50% margin" and the price lands short. Add 50% to a $50 cost and the price is $75. Divide the $25 profit by the $75 price and the actual margin is 33.3% — about a third less than the number in your head. Across 100 sales, that gap leaves roughly $500 of planned profit on the table.
| Cost | Price | Margin | Markup | Profit |
|---|---|---|---|---|
| $50 | $80 | 37.5% | 60% | $30 |
| $50 | $100 | 50% | 100% | $50 |
| $50 | $75 | 33.3% | 50% | $25 |
Every row uses the same $50 cost. Notice that doubling the markup (60% to 100%) does not double the margin (37.5% to 50%). Margin climbs slower than markup because the price grows along with the profit.
The formulas
Both calculations start with the same profit figure. The only difference is what you divide it by:
- Margin = (price − cost) ÷ price — profit as a share of what the customer pays
- Markup = (price − cost) ÷ cost — profit as a raise over what you paid
To convert between them, remember this rule: markup ÷ (1 + markup) = margin.
Here is the full math for the $50-to-$80 example, step by step:
- Profit = price − cost = $80 − $50 = $30
- Margin = $30 ÷ $80 = 0.375 = 37.5%
- Markup = $30 ÷ $50 = 0.60 = 60%
- Check the conversion: 0.60 ÷ (1 + 0.60) = 0.60 ÷ 1.60 = 0.375 = 37.5%
If you know the margin and want the markup, run it the other way: margin ÷ (1 − margin) = markup. A 37.5% margin converts back to 0.375 ÷ 0.625 = 60%.
Typical margins by business type
Gross margins cluster differently depending on what you sell. These ranges vary widely, but they give you a starting point when setting targets:
- Handmade goods: 30–60% — materials are cheap relative to your time, but pricing ceilings are real
- Retail resale: 25–40% — you buy inventory first, so supplier costs eat a large share of the price
- Services: 50%+ — little cost of goods sold, though your hours are the real expense
- Digital products: 80%+ — near-zero delivery cost once the product exists
Break-even: the number most sellers skip
A $30 profit per unit sounds healthy until fixed costs enter the picture. Break-even tells you how many units you must sell each month before a single dollar becomes profit:
break-even units = fixed costs ÷ profit per unit
With $500 per month in fixed costs (software, storage unit, insurance) and $30 profit per unit, the math is $500 ÷ $30 = 16.7, which rounds up to 17 units per month. Units 1 through 17 only pay the bills. Unit 18 is where earning starts.
If selling 17 units a month feels unrealistic, you have exactly three levers: cut fixed costs, raise the price, or reduce the cost of goods. Pricing decisions get much easier once you know this threshold.
Pricing on marketplaces
On a marketplace, platform fees come out of the price before profit does. On Etsy, a $35 sale typically carries around $4.25 in combined listing, transaction, and payment-processing fees — more if the sale comes through offsite ads. That fee alone consumes a meaningful slice of a 37.5% margin, so run your exact listing price through the Etsy fee calculator before committing to a number.
To test your own products, enter cost and price in the profit margin calculator. It returns margin, markup, and profit per unit instantly, so you can compare several candidate prices side by side instead of doing division in your head.
Fees are only half of the true cost picture. If you pay yourself, your labor belongs on the cost side of the formula. Convert your hourly rate with the salary to hourly calculator, multiply by the hours each unit takes, and fold that figure into the cost before calculating margin.
FAQ
Is 50% margin the same as 50% markup?
No. A 50% markup on cost produces a 33.3% margin. Convert any markup to its margin by dividing it by one plus itself: 0.50 ÷ 1.50 = 0.333. They only produce equal-looking results at very low percentages, which is exactly why the habit of treating them as synonyms goes unnoticed for so long.
What is a good profit margin for a small business?
It depends on the model. Gross margins of 25–40% are common in retail resale, 30–60% in handmade goods, 50%+ in services, and 80%+ for digital products. Net margins — after overhead, salaries, and taxes — are usually far lower, often in the 5–15% range. Compare yourself against similar businesses, not against a universal number.
How do I calculate break-even?
Divide total fixed costs by the profit you earn per unit. At $500 per month in fixed costs and $30 profit per unit, you need $500 ÷ $30 = 16.7, rounded up to 17 sales per month. Anything beyond that point generates profit; anything below it draws down savings.
Should I price with margin or markup?
Either works as long as you know which one you are using. Markup feels intuitive because it builds directly on cost. Margin makes the profit share of each sale explicit and matches how accountants report performance. A practical routine: set prices using markup, then verify the resulting margin against your target before launching.