Amazon FBA Profit Calculator
True landed cost, ROI, net margin & break-even ACoS — all in real time.
Product & Cost Inputs
Tip: target Ad Spend ÷ Units Sold from your last campaign, or leave $0 if not running ads.
Net Profit / Unit
Profit Margin
True Landed Cost
Cost Breakdown per Unit
Profit Breakdown Chart
Proportional to your $ selling price
ROI on Capital
return on invested capital
Break-Even ACoS
max ad spend / revenue
Your ACoS target must stay below to remain profitable. Reduce COGS, fees, or PPC — or raise your selling price.
How to Calculate True Landed Cost & Amazon FBA Profit
The true landed cost is every dollar you spend getting a unit from your supplier to a customer's door — including import duties and Amazon platform fees. Many sellers only count COGS + FBA fee, which leads to inflated profit projections.
Customs Duty Amount
(COGS + Shipping) × Duty Rate %
Applied on the CIF (Cost + Insurance + Freight) value.
Amazon Referral Fee
Selling Price × Referral Rate %
Charged on every sale; 15% is standard for most categories.
True Landed Cost
COGS + Shipping + Customs + FBA Fee + Referral Fee
The all-in cost before advertising.
Net Profit
Selling Price − Landed Cost − PPC Ad Spend
Profit remaining after every cost including ads.
Net Profit Margin
(Net Profit ÷ Selling Price) × 100
Percentage of revenue kept as profit. Aim for ≥ 20%.
ROI
(Net Profit ÷ Invested Capital) × 100
Return on the capital tied up in inventory. Aim for ≥ 50%.
Break-Even ACoS
(Selling Price − Landed Cost) ÷ Selling Price × 100
Maximum ad spend as % of revenue before ads turn the product unprofitable.
Real-World Example: Sourcing a $5 Product from China to Amazon US
This example uses the calculator's default values. A common scenario for a private-label product sourced from Alibaba.
| Cost Component | Amount | % of Sale |
|---|---|---|
| Selling Price on Amazon | $35.00 | 100% |
| COGS (supplier cost) | $5.00 | 14.3% |
| Air freight per unit | $3.00 | 8.6% |
| Customs duty (12% of $8) | $0.96 | 2.7% |
| Amazon referral fee (15%) | $5.25 | 15.0% |
| FBA fulfillment fee | $3.22 | 9.2% |
| PPC ad spend | $2.00 | 5.7% |
| True Landed Cost | $19.43 | 55.5% |
| Net Profit | $15.57 | 44.5% |
In this example the break-even ACoS is 50.3% — meaning you can spend up to 50.3% of revenue on PPC before the product becomes unprofitable. A typical target ACoS is 20–35%.