E-commerce sellers and product sourcing managers

Amazon FBA Net Profit Calculator

Calculate Amazon FBA net profit margin, estimated fees, and per-unit profit from product cost, sale price, package dimensions, weight, and storage duration. Review the live result first, then use the formula notes and related calculators for deeper planning.

Formula Snapshot

FBA Net Profit = Sale Price - Product Cost - Referral Fee - Fulfillment Fee - Storage Cost

Margin = Net Profit / Sale Price x 100

Product economics

Net profit

$11.51

Per unit after modeled fees

Profit margin

38.4%

Target range: 15% to 30%

Shipping weight

1.20 lb

0.86 lb dimensional

Fee mix
COGS$8.50
Referral fee$4.50
Fulfillment fee$5.37
Storage fee$0.11
Net profit$11.51

Active package: 10.0 x 6.0 x 2.0 in. Volume: 0.069 ft3.

How do you calculate Amazon FBA net profit margins?

Calculate your Amazon FBA net profit by subtracting your Cost of Goods Sold (COGS), Amazon fulfillment fees, referral fees, and storage costs from your gross revenue. A healthy target FBA margin is 15% to 30%.

Inputs and Formula Variables

Product cost (USD)

The landed cost of goods used as the seller-side inventory cost before Amazon fees.

Sale price (USD)

The listing revenue used to estimate referral fee, margin, and net profit per order.

Dimensions (inches)

The packaged length, width, and height used to calculate cubic feet and dimensional weight.

Weight (lb)

The unit weight compared with dimensional weight to approximate shipping weight.

Storage duration (months)

The average months in FBA storage used to estimate monthly inventory storage cost.

FBA fee model

FBA costs are estimated from public fee concepts: a referral percentage, a fulfillment fee based on shipping weight and size tier, and monthly storage cost based on packaged cubic feet.

Seller Central fee previews remain the final source for exact product-level charges, but this calculator is useful before sourcing a SKU or renegotiating packaging.

Margin = Net Profit / Sale Price x 100
  • Dimensional weight can exceed scale weight for large, light products.
  • Storage cost rises when a product occupies more cubic feet for longer periods.
  • A small packaging change can move a product into a cheaper fulfillment band.

Related Calculators

Margin vs Markup CalculatorTranslate profit margin targets into seller pricing.Dimensional Weight CalculatorAudit packaging size before sending inventory.

Source Notes

Canonical path: /finance/amazon-fba-net-profit-calculator.