Profit Margin Calculator
Enter your selling price, product cost, payment processing fee, and ad cost per sale. We'll show gross profit, net profit, and both margin percentages instantly.
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How to Calculate Dropshipping Profit Margin
Profit margin in dropshipping is the percentage of every sale that you actually keep after every cost — product, shipping, payment processing, and advertising — has been paid. It is the single most important number in your business, because revenue without margin is just expensive turnover. A store doing $50,000/month at a 5% net margin keeps $2,500. A store doing $10,000/month at a 25% net margin keeps $2,500. The second store works a fifth as hard for the same money.
The Formula
Gross Profit = Selling Price − Product Cost − Shipping Cost − Payment Processing Fee
Net Profit = Gross Profit − Ad Cost Per Sale
Net Profit Margin = (Net Profit ÷ Selling Price) × 100
Gross Margin = (Gross Profit ÷ Selling Price) × 100
Break-Even ROAS = 1 ÷ Gross Margin (as a decimal)
A Worked Example
Say you sell a posture-corrector brace for $39.99. You pay your supplier $12.00 per unit, you absorb $4.50 in shipping (because you offer "free shipping" to boost conversion), Stripe charges 2.9% + $0.30 per transaction, and you spend an average of $8.00 in Facebook ads to make one sale.
- Processing fee = (39.99 × 0.029) + 0.30 = $1.46
- Gross profit = 39.99 − 12.00 − 4.50 − 1.46 = $22.03
- Net profit = 22.03 − 8.00 = $14.03
- Net margin = 14.03 ÷ 39.99 = 35.1%
- Gross margin = 22.03 ÷ 39.99 = 55.1%
- Break-even ROAS = 1 ÷ 0.551 = 1.81×
That is a healthy product. A 35% net margin means you can absorb a 20% ad-cost spike without going underwater. Your break-even ROAS of 1.81× means your ads only need to return $1.81 for every $1 spent for you to break even — anything above that is profit.
What Is a "Good" Dropshipping Profit Margin?
There is no universal answer because dropshipping margins vary wildly by niche, but here are the benchmarks we have observed across hundreds of stores:
| Margin Tier | Net Margin | Typical Niche |
|---|---|---|
| Excellent | 25%+ | Jewelry, fashion accessories, novelty gifts, digital-adjacent products |
| Healthy | 15%–25% | Home & living, beauty, pet products, fitness accessories |
| Marginal | 8%–15% | Electronics accessories, phone cases, kitchen gadgets |
| Unsustainable | Under 8% | Heavily commoditized items, saturated AliExpress bestsellers |
Anything under 8% net margin is mathematically unsustainable in dropshipping, because ad costs rise over time and a 10% spike will push you negative. If your calculator result is in the red zone, raise your price, negotiate with your supplier, switch to a cheaper shipping option, or pick a different product.
The Three Mistakes That Kill Dropshipping Profit
1. Forgetting payment processing fees. 2.9% + $0.30 sounds small, but on a $15 product it eats 3.9% of your revenue. The calculator includes this by default — do not zero it out.
2. Calculating ROAS on revenue, not profit. A 3× ROAS feels great until you realize your break-even is 3.2× and you just lost money "scaling." Always look at break-even ROAS next to actual ROAS.
3. Pricing shipping as "free" without modeling it. Free shipping increases conversion by roughly 10–20%, but only you can decide whether the conversion lift justifies the margin hit. Model both scenarios in the calculator.