Amazon FBA Profit Calculator
Amazon's fees add up fast — between the referral fee, FBA fulfillment, and storage, they often eat 30–45% of your selling price. This calculator shows what you actually keep per unit. Tip: always run these numbers before you source a product, not after.
Last Updated: June 2026
Reviewed for current platform fees and pricing rules.
Most categories are 15%; range is 8–20% by category. Minimum $0.30 per item.
Starting estimates based on 2026 rates — confirm your exact fee in Amazon Seller Central.
Other costs (optional)
Net profit per unit
$12.51
Profit margin
41.72%
ROI
156.39%
Total Amazon fees
$9.48
Referral $4.50 + FBA $4.98
Formula
Referral fee = Selling price × category rate (most categories 15%, minimum $0.30) · Net profit = Selling price − product cost − referral fee − fulfillment fee − other costs · Profit margin (%) = (Net profit ÷ Selling price) × 100 · ROI (%) = (Net profit ÷ your cost to get the unit to Amazon) × 100
Worked example
You sell an item for $29.99. Product cost $7.00, inbound shipping $1.00/unit, large standard size.
- Referral fee (15%): 29.99 × 0.15 = $4.50
- FBA fulfillment fee (large standard): $4.98
- Total Amazon fees: 4.50 + 4.98 = $9.48
- Total cost: 7.00 + 1.00 + 9.48 = $17.48
- Net profit: 29.99 − 17.48 = $12.51
- Profit margin: 12.51 ÷ 29.99 × 100 ≈ 41.7%
- ROI: 12.51 ÷ (7.00 + 1.00) × 100 ≈ 156%
Answer: $12.51 profit · 41.7% margin · 156% ROI
How it works
Amazon charges a referral fee (a percentage of the sale) plus a flat FBA fulfillment fee per unit based on size and weight. Add your product cost, inbound shipping, storage, and any ads, subtract it all from your selling price, and what's left is your profit per unit.
A healthy FBA product looks like the example above — but drop that same item's price to $19.99 and the same costs leave just ~$5.50 profit, which is why pricing and product cost matter so much.
Common mistakes
- Forgetting the FBA fulfillment fee is per unit and based on size/weight, not price.
- Ignoring storage fees, which spike 2–3x in the Oct–Dec peak.
- Leaving out advertising — most FBA products need PPC to sell.
- Not factoring the $39.99/month Professional plan across your unit volume.
FAQ
- What fees does Amazon FBA charge?
- A referral fee (usually 15% of the sale), a per-unit FBA fulfillment fee based on size and weight, monthly storage fees, and a $39.99/month Professional selling plan.
- How much is the Amazon referral fee?
- Most categories are 15% of the total sale price, with a $0.30 minimum. It ranges from about 8% to 20% depending on category.
- How much is the FBA fulfillment fee?
- It depends on size and weight, starting around $3.30 for small standard items and rising into the double digits for oversize products.
- What's a good FBA profit margin?
- Many sellers aim for 25–35% net margin and a strong ROI. See our guide "What Is a Good Profit Margin?" at /guides/what-is-a-good-profit-margin.
- Are there hidden FBA fees?
- Yes — inbound placement fees, a low-inventory-level fee, aged-inventory surcharges, and a fuel surcharge can all apply. Always check Seller Central.
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