How to use
- Look up the referral percent for your category on Amazon's fee schedule.
- Look up the fulfillment fee for the size and weight tier. Type that dollar amount. Do not reuse a fee from a different package.
- Add what it cost to get one unit to Amazon.
- Read profit after those lines. Storage, returns, and ads are extra.
A 15% referral fee is common for many categories and wrong for others. Apparel, jewellery, and some grocery lines are not 15%. If you type 15% because a blog used it, the profit is a story, not a quote.
Worked example. A $29.99 item, $8 product cost, $1.20 inbound, 15% referral ($4.50), and a $5.40 fulfillment fee you copied from the size tier. Profit is $10.89 before storage and ads. Change the fulfillment fee to $7.20 and profit falls to $9.09. That gap is why the fee is an input, not a hidden constant.
FBA storage is charged on space and season, not on this sale screen. A slow unit can cost more in storage than this profit line shows. If a product sits, this calculator is the optimistic case.
Returns are the other hole. If 8% of units come back and you cannot resell them, subtract that from the profit after you know your own return rate. We do not invent a return rate for your listing.
Use the Walmart and eBay calculators on this site when you are choosing a channel. Compare dollars left, not the referral percent alone.
Source: Confirm category and size fees on Amazon's fee schedule. Last updated 2026-11-02. Rates change. The calculator uses the numbers you enter.
FAQ
Is 15% always the Amazon fee?
No. It is a frequent referral rate, not a rule for every category.
Why do I type the FBA fee?
Size and weight tiers change. A typed fee from Amazon's table is safer than a guessed average.
Does this include storage?
No. Add monthly storage yourself if the unit will sit.
Are ads included?
No. Subtract ad cost per order after you know it.
Is my product uploaded?
No. Only the numbers you type are used, and they stay in the browser.