Free Amazon FBA Fee Calculator
Amazon FBA Fee
and Profit Estimator.
Enter your product size, weight, selling price, and landed cost. See your size tier, fulfillment fee, referral fee, monthly storage, and the net profit left on every unit.
Built on the 2026 United States FBA fee schedule. No signup required.
How to calculate FBA fees
See what Amazon keeps before you ship a unit.
Your product
Your FBA Cost Breakdown
Large standardNet profit per unit
$10.49
After Amazon fees and your landed cost. This is what is left to cover advertising, overhead, and profit.
Net margin
35.0%
Net profit as a share of your selling price.
Total Amazon fees
$12.50
Referral, fulfillment, and one month of storage combined.
Fee detail per unit
Billed on a shipping weight of 12.0 oz in the large standard tier.
Estimate based on the 2026 United States FBA fee schedule effective January 2026. Amazon revises fees yearly and runs higher rates during the October to December peak. Storage shown is one month for this unit's volume. Confirm live figures in Amazon's FBA revenue calculator before you commit. A 3.5 percent fulfillment surcharge applies from April 17, 2026 and is not included here.
How operators read these numbers
What the fee math shows, and where the money hides.
Fees are only half the picture. Here is how operators read an FBA breakdown before they decide to launch or scale a product.
The size tier is where the big money moves.
Crossing from large standard into a bulky tier can more than double your fulfillment fee on the same product. Before you finalize packaging, check whether trimming an inch off the longest side or shaving a few ounces drops you into a cheaper tier. That single design choice often matters more than any bid you will ever set.
Dimensional weight punishes boxes full of air.
For large standard and oversize items, Amazon charges on the greater of your real weight and your dimensional weight. A light product in an oversized box gets billed as if it were heavy. Tighter packaging lowers the shipping weight Amazon uses, which lowers the fee directly.
Net margin before ads is the number that matters.
The profit this tool shows is what is left after Amazon fees and your landed cost, but before a single dollar of advertising. If that number is already thin, there is no room to fund the ads that drive rank and reviews. Healthy products carry enough margin before ads to absorb a real advertising budget and still profit.
Storage is small per unit until your stock sits.
One month of storage looks trivial on a single unit. The cost grows when inventory ages, peak season rates kick in from October through December, and slow movers trigger the long term storage surcharge. Fee math on a fast seller looks very different from the same product sitting six months in a warehouse.
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Net Profit Per Unit
$10.49
35.0% net margin
Total Fees
$12.50
Size Tier
Large standard
Where each dollar goes
Free Strategy Call
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100+
Amazon brands in the AMZBoost portfolio
9
Years operating on Amazon
6
Marketplaces actively managed
Amazon FBA fee questions, answered
Frequently asked questions about Amazon FBA fees.
Common questions we get from brands using this calculator.
