Enter your product cost, selling price, fees, and ad cost per order. Get your net profit per order, profit margin, break-even ad cost, and break-even ROAS instantly.
Start with a sales-channel preset (fee % is editable):
Net Profit / Order
Profit margin
A dropshipping profit calculator shows how much you actually keep on each order once every cost is accounted for: the product cost you pay your supplier, the shipping from supplier to customer, the payment or marketplace fee, and, the cost that makes or breaks a dropshipping store, your ad spend per order. Enter those numbers and you get your net profit per order, your profit margin, and the two numbers most dropshippers get wrong: your break-even ad cost and your break-even ROAS. It works whether you sell on your own Shopify store or on a marketplace like Shopee, Lazada, TikTok Shop, or Amazon.
The formula is: Net Profit = Selling Price - Product Cost - Shipping - Fees - Ad Cost per Order. Say you sell an item for $30, your supplier charges $8 for the product and $3 to ship it, your payment and marketplace fee is 10% (which is $3 on a $30 sale), and you spend $6 on ads to win each order. Your total cost per order is $8 + $3 + $3 + $6 = $20, so your net profit is $30 - $20 = $10 per order, a 33% margin. Miss the ad cost out of that sum, as most quick mental maths does, and you would wrongly believe you were making $16 an order.
Ad spend is usually the single largest cost in dropshipping, so the most useful number this calculator gives you is the break-even ad cost per order: the most you can pay to acquire one customer before the order stops being profitable. In the example above, that ceiling is $16 (selling price minus product, shipping, and fees). Your break-even ROAS is the same idea expressed as a return-on-ad-spend ratio: Selling Price ÷ Break-Even Ad Cost, or $30 ÷ $16 = 1.88x. If your Facebook or TikTok campaigns return less than 1.88x, you are losing money on every sale no matter how many orders come in. Knowing this number before you scale is what separates a store that survives from one that burns its budget.
Because you do not hold stock, dropshipping looks low-risk, but the margins are thin and every cost compounds. A product that returns a healthy 33% margin on your own store can slip into a loss the moment a marketplace takes a 15% cut and your cost per order creeps up by a couple of dollars. This is why per-order profit, not revenue, is the number that matters. A store doing $50,000 a month at a 2% net margin is one ad-cost increase or supplier price rise away from losing money. Rank your products by net profit per order, and drop or reprice anything that only survives on paper. To pressure-test the underlying pricing, our product pricing calculator works out the selling price you need to hit a target margin, and the break-even calculator shows how many orders cover your fixed costs.
The same product earns a different profit on every channel because each one charges a different fee. Selling on your own Shopify store, you keep everything after payment processing; on Shopee or Lazada you give up roughly 8 to 10%; on Amazon it can be 15% or more. Switch the preset above and watch the net profit move. For a full breakdown of what each platform charges, our Shopee fee calculator and Lazada fee calculator itemise commission, transaction, and service fees, while the profit margin calculator covers the simpler cost-of-goods view when you are not factoring in ad spend.
A calculator gives you the model; running the business means tracking the real thing across every order and channel. As dropshippers add Shopee, Lazada, TikTok Shop, and a Shopify store, per-SKU profit gets buried under mismatched fees, shipping charges, and ad costs that live in different dashboards. OneCart syncs your inventory, orders, and pricing across all your channels from one place and reports profit by SKU per channel, so the margins you model here hold up when the orders are real. That single view is what lets you scale the winners and quietly kill the products that only ever looked profitable.
OneCart syncs pricing, inventory, and orders across Shopify, Shopee, Lazada, TikTok Shop, Amazon and more, and reports profit per product.
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