Referral fee: 15% (min $0.30)
0.75 lbs
Net Profit
Fee Breakdown
Profit Distribution
How to Use This FBA Calculator
Enter Your Costs
Input your product cost (what you pay) and your Amazon selling price.
Select Category & Size
Choose your product category for accurate referral fees and FBA size tier.
Review Your Profit
See your net profit, ROI, and complete fee breakdown instantly.
Fee Data: Last updated 2026-01-15. Amazon fees change periodically.
View official Amazon fee scheduleWhat is an Amazon FBA Profit Calculator?
An Amazon FBA profit calculator helps sellers determine their true profit margins after accounting for all Amazon fees. FBA (Fulfillment by Amazon) involves multiple fee types—referral fees, fulfillment fees, storage fees, and more—that can significantly impact your bottom line. Our calculator provides accurate projections before you source products, helping you avoid costly mistakes.
Understanding your FBA unit economics is essential for sustainable Amazon selling. Many new sellers focus only on product cost and selling price, missing the 30-40% of revenue that goes to Amazon fees. This calculator reveals your true profit on every unit sold.
Understanding Amazon FBA Fee Structure
Referral Fees
Amazon's commission on each sale, calculated as a percentage of the total sale price including shipping and gift wrap. Rates vary by category:
- • Most categories: 15%
- • Electronics: 8%
- • Apparel: 17%
- • Jewelry: 20%
- • Amazon device accessories: 45%
FBA Fulfillment Fees
Charged per unit for picking, packing, and shipping. Based on product size tier and weight:
- • Small Standard (≤1 lb): $3.22
- • Large Standard (≤1 lb): $4.75
- • Large Standard (1-2 lb): $5.45
- • Small Oversize: $9.73+
- • Additional weight fees apply
How to Calculate Your Amazon FBA Profit
The basic FBA profit formula is:
Net Profit = Selling Price − Product Cost − Referral Fee − FBA Fee − Other Costs
ROI = (Net Profit ÷ Product Cost) × 100%
Example calculation: A product selling for $29.99 with $8 product cost in the General category might have: $4.50 referral fee (15%) + $5.45 FBA fee (large standard 1-2 lb) = $9.95 in Amazon fees. Net profit: $29.99 − $8.00 − $9.95 = $12.04 per unit, or 150% ROI on product cost.
FBA Profit Margin Benchmarks
Low Margin
Risky unless you have very high volume. One price war or fee increase could eliminate profitability.
Acceptable
Sustainable for established products with consistent sales. Monitor closely for margin pressure.
Healthy
Strong margins provide room for advertising, promotions, and absorbing unexpected costs.
Frequently Asked Questions
What profit margin should I aim for with Amazon FBA?
Most successful FBA sellers target 25-35% net profit margins after all fees. This provides cushion for advertising costs, price fluctuations, and occasional returns while maintaining healthy ROI on inventory investment.
How do I reduce my Amazon FBA fees?
Optimize packaging to qualify for smaller size tiers, source lighter products when possible, maintain healthy inventory levels to avoid storage surcharges, and consider FBM (Fulfilled by Merchant) for heavy/oversized items where FBA fees are prohibitive.
What's the difference between FBA and FBM for profitability?
FBA typically costs more per unit but provides Prime eligibility, higher conversion rates, and less operational hassle. FBM has lower Amazon fees but requires you to handle shipping, returns, and customer service. Calculate both to determine which fits your product and business model.
How accurate is this FBA calculator?
Our calculator uses official Amazon fee data updated regularly. However, actual fees may vary slightly based on your specific account, product dimensions, and seasonal factors. Use these calculations for planning, and verify with your actual Seller Central data for precise figures.
Should I include advertising costs in my profit calculation?
Yes, for a complete picture. Many sellers spend 15-30% of revenue on advertising. Our base calculation shows pre-advertising profit; subtract your typical ACoS (Advertising Cost of Sales) for true profitability.
Why do storage fees matter for profit calculations?
Storage fees accumulate monthly. Slow-moving inventory can erode profits significantly, especially during Q4 peak season when rates increase 3x. Factor in your expected inventory turnover and avoid overstocking items with thin margins.