Amazon FBA Profit Calculator
Amazon FBA profit is decided by four numbers: what the customer pays, the referral fee, the fulfillment fee Amazon charges to pick and pack, and your product cost. Advertising usually decides whether the unit is profitable at all.
Because FBA fulfillment fees depend on size tier and weight, this calculator asks you to enter the fee Amazon quotes for your product rather than guessing. Everything else is pre-filled with the standard referral rate and can be edited.
Edit the fee rates
How Amazon FBA fees work
Amazon fulfillment fees, storage fees and referral rates vary by category and marketplace. Read the fee preview inside Seller Central as the final source of truth.
| Fee | Typical rate | What to know |
|---|---|---|
| Referral fee | 15% | Standard for most categories. Some categories are 8% or 20%. |
| Minimum referral fee | $0.30 | Applies when 15% of the price is lower than this. |
| FBA fulfillment fee | per unit, by size tier | Enter the exact fee shown in the Amazon fee preview for your product. |
| Monthly storage | per cubic foot | Include it in the other per-order cost if you hold stock for months. |
| PPC advertising | your ACOS | Enter your ad spend as a percentage of revenue. |
Worked example
A typical order priced at $32.99 costs you $8.40 in product and $0.00 to ship and pack.
| Line | Amount |
|---|---|
| Buyer pays | $32.99 |
| Total platform fees | -$8.91 |
| Product, shipping and other costs | -$14.74 |
| Net profit | $9.34 (28.32% margin) |
| Break-even price | $19.64 |
What sellers get wrong on Amazon FBA
- Pricing against the headline fee only. The commission is rarely the whole cost: fixed fees, payment processing and advertising add several points on top.
- Forgetting what shipping really costs. If you charge the buyer less than the label and packaging actually cost, every sale quietly loses money.
- Ignoring returns. A 3% return rate on a 20% margin product removes a sixth of your profit. Put it in the reserve field.
- Never checking the break-even price. Knowing the lowest price you can accept on an offer is the difference between a negotiation and a loss.
Amazon FBA fee calculator FAQ
How much does Amazon take per sale?
A referral fee of 15% for most categories, plus the FBA fulfillment fee for your product size tier. If you sell on a professional plan you also pay a monthly subscription, which you can amortise into the other per-order cost.
Why do I need to enter the fulfillment fee myself?
FBA fees depend on the product dimensions, weight and category, and Amazon revises them regularly. Copy the figure from the fee preview in Seller Central so the calculation matches your actual payouts.
What profit margin should I aim for on Amazon?
As a rule of thumb, aim for at least a 25-30% net margin after advertising, because returns, storage and long-term fees will eat a few points you did not plan for.
Should I include returns in the calculation?
Yes. Amazon refunds the customer, and you still pay most of the fulfillment cost. A 3% returns reserve is a conservative default for most categories.
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SellerKit Pro adds bulk analysis: paste your whole catalogue and get net profit per platform, plus a break-even price for every SKU.