Free FBA tool
FBA Fee Calculator
Your numbers
Amazon fee per sale
$8.35
Amazon takes 33.4% of your $25.00 sale in fulfillment and referral fees. Before your product cost, ads, storage, and returns, that leaves $16.65 to cover them.
Per sale. Does not subtract your product cost, ads, monthly storage (below), returns, or any per-item minimum referral on low-price items.
Size tier
Large Standard
Billed on 1 lb (actual 1, dim 0.78)
Fulfillment fee
$4.60
Pick, pack, ship (by size + weight)
Referral fee
$3.75
15% of sale price
Storage / unit / mo
$0.05
Off-peak rate, per month
Fees hide across a whole catalog. Our supply chain experts find the ones you can cut.
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- The spreadsheet you use to manage inventory & suppliers
- Optional: connect Amazon, so we see your real numbers
What you leave with
- Where you're losing money
- What to fix first
- Your price
Andrew Erickson Co-founder
Has run and exited multiple Amazon brands and mentored thousands of sellers.
Inventory Hero
Stop estimating fees one SKU at a time
This page estimates from the size and weight you type. Inventory Hero reads the actual fulfillment and referral fees Amazon charged each SKU, so a unit that quietly crossed a size tier or got billed on dimensional weight surfaces before it eats a month of margin.
- Actual per-SKU fees pulled from Amazon, not size estimates
- Size-tier and dimensional-weight changes flagged automatically
- No re-keying dimensions for hundreds of SKUs by hand
Prefer to run it yourself? Start a 14-day free trial.
How FBA fees are calculated
Amazon fee per sale
Per-sale fee = fulfillment fee + referral fee
The fulfillment fee comes from Amazon's 2026 size-tier table (size tier x billing weight x price band). The referral fee is the sale price x your referral rate (15% in most categories). Billing weight is the greater of the unit's actual weight and its dimensional weight, which is length x width x height divided by 139.
Fulfillment and storage rates reflect Amazon's 2026 US schedule (effective January 2026); referral percentages have held since January 2024. Amazon can adjust fees, so confirm against Seller Central before you commit a purchase order.
Worked example
A unit sells for $25. Packed, it is 9 x 6 x 2 inches and weighs 1 pound, and it is in a standard 15% referral category.
- Size tier: Large Standard, billed on 1.0 lb (the unit weight beats the 0.78 lb dimensional weight)
- Fulfillment fee: $4.60 from the 2026 Large Standard table for the $10 to $50 price band
- Referral fee: 15% of $25 = $3.75
- Amazon fee per sale: $4.60 + $3.75 = $8.35, about 33% of the price, leaving $16.65 before product cost
- Monthly storage: about $0.05 per unit off-peak (multiply by months held; Q4 is roughly 2.8x for standard-size)
Now subtract your landed cost to see what you actually keep: drop these fees into the FBA profit calculator for net profit, margin, and break-even price.
Key terms
- Size tier
- Amazon's bucket for your unit (Small Standard, Large Standard, Small or Large Bulky, Extra-Large), set by its dimensions and weight. The size tier picks which fulfillment-fee table applies, so crossing a tier boundary can jump your fee.
- Billing weight
- The weight Amazon charges on: the greater of the unit's actual weight and its dimensional weight (length x width x height divided by 139). A light but bulky unit is billed on its size, not its scale weight.
- Price band
- Fulfillment rates step into three price bands: under $10, $10 to $50, and over $50. Items under $10 get the lower low-price rate, and items over $50 pay a little more than the $10 to $50 band for the same box. The calculator uses the right band for the price you enter, which is why a cheaper item can cost less to fulfill.
Frequently asked questions
How much does Amazon FBA charge per sale?
On each sale Amazon charges two fees: a fulfillment fee to pick, pack, and ship the unit, and a referral fee that is a percent of the sale price. For a $25 item that is 9 x 6 x 2 inches and 1 pound, that is a $4.60 fulfillment fee plus a $3.75 referral fee (15%), so $8.35 per sale, which is about 33% of the price. Storage, your product cost, and ads are on top of that.
What is the difference between the fulfillment fee and the referral fee?
The fulfillment fee is a flat per-unit charge set by your product's size tier and billing weight, not its price; it pays for Amazon picking, packing, and shipping the unit. The referral fee is Amazon's sales commission, charged as a percent of the sale price (most categories are 15%). A cheap, heavy item is dominated by the fulfillment fee; an expensive, light item is dominated by the referral fee.
How is the FBA fulfillment fee calculated?
Amazon classifies the unit into a size tier (Small Standard, Large Standard, Bulky, or Extra-Large) from its dimensions and weight, then looks up the fee by tier, billing weight, and price band. Billing weight is the greater of the unit's actual weight and its dimensional weight (length x width x height divided by 139), so a light but bulky item is charged on its size. Items under $10 get a lower low-price fulfillment rate.
What is the Amazon referral fee?
The referral fee is Amazon's commission on each sale, charged as a percent of the total sale price. Most categories are 15%, but it ranges from about 8% to 17% depending on category, with some (like fine jewelry) higher. There is also a per-item minimum referral fee (about $0.30) that can apply on very low-price items. Set the rate for your category in the calculator to be exact.
Does this include storage and other FBA fees?
No. This tool covers the two fees on every sale, fulfillment and referral, plus an informational off-peak monthly storage estimate per unit. It does not include peak (Q4) or long-term storage, the low-inventory-level fee, inbound placement fees, or returns. To see what you actually keep after your product cost and all fees, add your landed cost in the FBA profit calculator.
Inventory Hero
We run this for you, every SKU, every day.
Fees are only half the story. Inventory Hero rolls actual Amazon fees, storage, and your landed cost into true net profit for every SKU, so you can see which products make money and which are quietly bleeding cash, across your whole catalog at once.
Prefer to run it yourself? Start a 14-day free trial.
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<iframe src="https://www.inventoryhero.ai/embed/fba-fee-calculator?utm_source=embed&utm_medium=iframe" title="FBA Fee Calculator by Inventory Hero" width="100%" height="720" style="border:1px solid #e5e5e5;border-radius:16px;max-width:680px" loading="lazy"></iframe>
<p style="font:13px/1.5 system-ui,sans-serif;text-align:center;margin:8px 0 0"><a href="https://www.inventoryhero.ai/tools/fba-fee-calculator">FBA Fee Calculator</a> by Inventory Hero</p>See all our free Amazon FBA calculators.