Product and shipping cost
Use the price the supplier actually charges per unit plus what it costs to ship that order to the customer.
A free dropshipping profit and loss calculator that shows realistic ecommerce profit after product cost, shipping, payment fees, ad spend, returns, and overhead. See profit per order, margin, ROI, monthly profit, and break-even ROAS.
The calculator opens with a typical dropshipping example. Replace every field with your own product numbers to model your real unit economics.
Estimated profit per order
$9.63
Profit margin
27.5%
ROI on unit cost
75.5%
Break-even ROAS
1.90x
Monthly profit
$3,852.00
The defaults are an illustrative example with realistic planning allowances. Replace them with your exact product numbers before scaling ad spend on a campaign.
This estimate is only as good as your product cost.
SupplyAutomate tracks the real cost of every purchase order — supplier price, freight, duty, and fulfillment — so the number you model here matches what you actually pay.
Worked example
With the current inputs, selling price minus product and shipping cost leaves a $22.24 preliminary spread. After payment fees, advertising, and returns, the estimated profit is $9.63 per order.
A campaign reporting a 3x or 4x ROAS can still lose money on thin-margin products. Compare your actual ROAS against the break-even ROAS above before you scale spend.
Estimated profit
27.5% margin
Dropshipping unit economics
Revenue minus product cost is not profit. A useful ecommerce model includes the costs that move with each order and the reserves that appear unevenly over time.
Use the price the supplier actually charges per unit plus what it costs to ship that order to the customer.
Card and checkout fees are usually a percentage plus a fixed amount per order — both add up fast at low order values.
Model ad spend as a percentage of revenue and compare it with your break-even ROAS before scaling a campaign.
Reserve for refunds and chargebacks, and allocate apps, subscriptions, and other fixed costs across each order.
Break-even ROAS is calculated from the profit left before advertising, divided by ad spend at the point profit hits zero.
Selling price - product cost - shipping - fees - ads - returns - overhead = profit
Current break-even ROAS: 1.90x
This calculator models a single order. When you are ready to track real orders across a month — with your own SKUs, channels, and ad campaigns — use the free Excel P&L template with the same formulas already wired up.
The calculator is free. The margin is the hard part.
Every number above depends on what your unit truly costs delivered to your fulfillment partner or 3PL. SupplyAutomate keeps purchase orders, suppliers, documents, freight, duty, and prep in one workspace, so your real cost per unit updates as the order moves — not three months later.
SupplyAutomate
Example dropshipping restock
Purchase order SA-1048
$14.06
Actual cost per order, tracked automatically
$8.50
Product cost per unit
$4.25
Shipping per order
$1.31
Payment fee per order
Drop this into the calculator instead of guessing at product cost.
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