What does a dropshipping profit calculator do?
It turns your price and cost assumptions into the numbers that decide whether a product is worth selling: profit per order, monthly profit, net margin, and how much you can afford to pay for each customer through ads. Because dropshipping costs are spread across suppliers, payment providers and ad platforms, it's easy to underestimate them. Putting them in one place shows the real picture before you spend money testing.
How to calculate dropshipping profit
The calculator uses these steps for each order:
Revenue collected = (selling price − discount) + shipping charged to customer
Revenue kept = revenue collected × (1 − refund rate)
Processing = revenue collected × processing % + fixed fee
Fixed costs per order = monthly fixed costs ÷ orders per month
Profit per order = revenue kept − product − supplier shipping − other costs − processing − ad cost (CPA) − fixed costs per order
Simple example: you sell at 40 with no discount and free shipping. The product costs 10, supplier shipping 5, processing about 1.50, and ads cost 15 per order. With no refunds or fixed costs, profit is 40 − 10 − 5 − 1.50 − 15 = 8.50 per order, a 21% net margin.
Gross margin vs net profit margin
Gross margin compares the selling price with the product cost only: (price − product cost) ÷ price. In the example above that's 75% — which looks great. Net profit margin subtracts every cost, including advertising, fees, refunds and overheads: profit per order ÷ revenue kept. That's 21%. Net margin is the number that tells you whether the business works.
How advertising costs affect profitability
For most dropshipping stores, advertising is the largest single cost. CPA (cost per acquisition) is what you spend on ads, on average, to get one order. Your break-even CPA is the profit available before ads, after every other cost including fixed costs per order:
Break-even CPA = profit per order + current CPA
If your actual CPA is higher than this, every order loses money — no matter how many you sell.
What break-even ROAS means
ROAS (return on ad spend) is revenue divided by ad spend. Ad platforms usually report it using the purchase value at checkout, so this calculator does the same: it includes customer-paid shipping and is measured before refunds.
Break-even ROAS = revenue collected per order ÷ break-even CPA
In the example, break-even CPA is 23.50, so break-even ROAS is 40 ÷ 23.50 ≈ 1.70x. If a product is unprofitable even with zero ad spend, there is no valid break-even ROAS and the calculator says so.
Why refunds, shipping and payment processing matter
- Refunds: a refunded order usually still costs you the product, shipping, the ad that won it and the processing fee. A small refund rate can remove a big share of a thin margin.
- Shipping: supplier shipping is always your cost. Charging customers for shipping raises revenue but can lower conversion, so test both.
- Payment processing: a percentage plus a fixed fee on every order. The fixed part hurts low-priced products most.
How beginners can improve their margins
- Raise average order value with bundles or sensible add-ons, so ad costs are spread over more revenue.
- Choose products with enough room between supplier cost and a believable selling price.
- Compare suppliers on total landed cost (product plus shipping), not unit price alone.
- Improve your product page and offer to lower CPA before increasing ad budgets.
- Reduce refunds with accurate descriptions, realistic delivery times and quality-checked samples.
Common mistakes when estimating dropshipping profits
- Using gross margin as if it were profit, and forgetting advertising entirely.
- Assuming optimistic ad costs from a single good day of results.
- Ignoring refunds, chargebacks and payment fees.
- Leaving out monthly subscriptions and apps, which matter most at low order volumes.
- Treating projections as guaranteed earnings instead of assumptions to test.
Frequently asked questions
What is a good profit margin for dropshipping?
There is no single right number, because it depends on your product, ad costs and order volume. Many sellers aim for enough net margin after advertising to absorb a rise in ad costs or returns. Use the calculator to test pessimistic scenarios rather than relying on one target.
What is break-even ROAS?
Break-even ROAS is the return on ad spend at which you make zero profit. In this calculator it equals the order value collected at checkout (product price after discount plus customer-paid shipping, before refunds) divided by your break-even CPA. If your actual ROAS is higher, you are projected to make a profit.
What is the difference between gross margin and net margin?
Gross margin only compares your selling price with the product cost. Net margin subtracts every cost — shipping, payment fees, advertising, refunds and fixed costs — so it shows what you actually keep.
Does this calculator include taxes?
No. Sales tax, VAT and income tax vary by country and business type, so they are not included. Check the rules where you sell and adjust your prices accordingly.
How are refunds calculated?
We assume a refunded order loses its revenue but you still pay the product, shipping, advertising and original payment processing costs. Real refund outcomes vary — some suppliers accept returns — so this is a deliberately cautious simplification.
Is my data saved or sent anywhere?
No account is needed and nothing is sent to a server. Your numbers are calculated in your browser and saved only in your browser's local storage so they're still there when you return.
New to dropshipping? Read our starter guide or see how the process works. Still choosing a product? Try the free AI product analyzer.