business ToolUpdated 2026-09-20

Amazon FBA Fee & Profit Calculator

Analyze the profitability of selling products on Amazon FBA. Factor in item selling price, product sourcing cost, Amazon referral fees, and FBA pick & pack charges to reveal your true net profit margin.

Formula & Mathematical Methodology

Net Profit = Selling Price - Landed Cost - Referral Fee - FBA Fulfillment Fee

Amazon charges a referral fee (percentage of gross selling price) and a weight-based FBA fulfillment fee for warehouse handling, packing, shipping, and customer support.

Step-by-Step Worked Example

Scenario: Product selling at $29.99 with $7.50 cost of goods, standard 15% category.

1. Amazon 15% Referral Fee: $29.99 × 0.15 = $4.50.

2. FBA Fulfillment Fee for 1.2 lb large standard: $3.94.

3. Total Amazon Fees: $4.50 + $3.94 = $8.44.

4. Net Profit: $29.99 - $7.50 (COGS) - $8.44 (Fees) = $14.05.

5. Net Profit Margin: ($14.05 ÷ $29.99) × 100 = 46.85%.

Final Calculated Result: $14.05 Net Profit (46.85% Margin)

Frequently Asked Questions

Are monthly storage fees included in this calculation?

This tool estimates per-unit fulfillment and referral fees. Monthly inventory storage fees (typically $0.87 to $2.40 per cubic foot depending on season) should be factored in for slow-moving inventory.