Amazon FBA profit calculator for sellers
This Amazon FBA Profit Calculator is built for Amazon sellers who need a fast way to estimate whether a product can make money before buying inventory, changing price, or increasing ad spend. It is useful for private label sellers, wholesale sellers, retail arbitrage sellers, and operators comparing multiple product ideas. The calculator focuses on per-unit economics: selling price, landed product cost, shipping, Amazon referral fee, FBA fulfillment fee, storage, advertising, and other variable costs.
How to use
Enter the expected selling price, product cost, shipping cost, Amazon referral fee percentage, FBA fulfillment fee, storage fee, advertising cost, and any other cost. The calculator updates net profit, profit margin, ROI, total fees, and break-even price immediately. Use the example data button to see a typical scenario, then replace the numbers with your own supplier quote, freight estimate, and campaign budget.
Calculation formula
Referral fee = selling price x referral fee percentage. Total fees = referral fee + FBA fulfillment fee + storage fee. Net profit = selling price - product cost - shipping cost - total fees - advertising cost - other cost. Profit margin = net profit / selling price. ROI = net profit / total cost before profit. Break-even price estimates the price needed to cover product cost, shipping, fulfillment, storage, advertising, other cost, and referral fee.
Example calculation
Suppose a product sells for $29.99, costs $8.50 to buy, costs $1.80 to ship inbound, has a 15% referral fee, a $4.85 FBA fulfillment fee, $0.35 storage, $3.00 in ads, and $0.75 in other costs. The calculator combines those costs to show estimated net profit, margin, ROI, total fees, and the break-even selling price. This helps you decide whether the product has enough room for promotions, returns, and ad testing.
Common mistakes
Sellers often look only at product cost and referral fee, then forget fulfillment, storage, shipping, returns, packaging, coupons, or launch advertising. Another common mistake is using a target margin that is too thin for a competitive category. Treat this calculator as an early filter, then confirm official fees and dimensional weight inside Amazon Seller Central before placing a large inventory order.