Landed cost
Use the cost of one sellable unit delivered into Amazon, including product, freight, duty, prep, and inbound costs.
A free FBA calculator that shows realistic Amazon profit after landed cost, referral fees, fulfillment, storage, ads, returns, and overhead. See profit per unit, margin, ROI, monthly profit, and break-even ACoS.
The calculator opens with a typical private-label example. Replace every field with your own product numbers to model your real unit economics.
Estimated profit per unit
$0.50
Profit margin
2.0%
ROI on landed cost
5.0%
Break-even ACoS
12.0%
Monthly profit
$150.00
The defaults are an illustrative example with realistic planning allowances. Replace them with your exact product numbers before making a sourcing decision.
This estimate is only as good as your landed cost.
SupplyAutomate tracks the real cost of every purchase order — supplier price, freight, duty, and prep — so the number you model here matches what you actually pay.
Worked example
With the current inputs, selling price minus landed cost leaves a $15.00 preliminary spread. After Amazon fees, advertising, storage, and returns, the estimated profit is $0.50 per unit.
Shipping weight alone is not enough to determine the FBA fee. Packaged dimensions and Amazon's size tier can change the result materially.
Estimated profit
2.0% margin
Amazon unit economics
Revenue minus product cost is not profit. A useful private-label model includes the costs that move with each sale and the reserves that appear unevenly over time.
Use the cost of one sellable unit delivered into Amazon, including product, freight, duty, prep, and inbound costs.
Enter the exact referral and FBA fulfillment fees for the category, packaged dimensions, weight, and program.
Model paid acquisition as a percentage of revenue and compare it with your break-even ACoS.
Reserve for refunds, damaged inventory, software, inspection, coupons, and other costs that do not appear on the supplier invoice.
Break-even ACoS is calculated from the profit left before advertising, divided by selling price.
Selling price - landed cost - Amazon fees - ads - returns - other costs = profit
Current break-even ACoS: 12.0%
Amazon fees vary by category, price, packaged dimensions, shipping weight, size tier, storage period, and program. Confirm the current referral and fulfillment fees in Amazon's official calculator, then use this page for the wider profit model.
The calculator is free. The margin is the hard part.
Every number above depends on what your unit truly costs delivered into Amazon. 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 FBA restock
Purchase order SA-1048
$10.42
Actual landed cost per unit
$8.90
Unit + prep
$0.94
Freight per unit
$0.58
Duty per unit
Drop this into the calculator instead of guessing at landed cost.
Calculate customs duties, tariffs, and total import taxes
True cost per unit including freight, duties & all fees
Freight rate calculator for air and sea shipping cost comparison
Compare EOQ and MOQ to find the right order quantity
Calculate lead time, reorder points, safety stock, and order dates