FBA Fee Calculator
Marketplace fulfilment fees and take-home.
Reviewed by the Calculation Machine team · Updated 24 October 2026 · How we check our maths
Your values
ⓘ Live results
- Profit per unit
- $14.24
- Marketplace payout
- $23.74
- Total fees
- $11.25
- Margin
- 40.7%
Quick answer
Your Amazon FBA payout is the selling price minus the referral fee (a percentage of the price, 15% in many categories), the FBA fulfillment fee (a flat amount per unit set by size and weight) and storage. Profit is the payout minus your cost of goods. A $34.99 item with a 15% referral fee, $5.40 fulfillment, $0.60 storage and $9.50 product cost leaves $14.24 profit, a 40.7% margin.
What the FBA Fee calculator does
This calculator shows what Amazon keeps and what you keep when a Fulfillment by Amazon (FBA) unit sells. Enter the price, your category's referral percentage, the per-unit fulfillment fee, the storage cost you allocate to each unit and what the product costs you landed (manufacturing, freight and duty). It returns total fees, the payout Amazon deposits, profit per unit and margin on the selling price.
Amazon's fees change regularly and depend on category, size tier, weight and season, so look up the current figures for your product in Seller Central's fee schedule or Revenue Calculator before relying on the result. The calculator does not include advertising, returns, inbound placement or low-inventory fees, so treat its profit as a ceiling and compare it with your full ecommerce profit once ad spend is known.
If you also sell through your own store or another marketplace, run the same product through the Shopify fee calculator or eBay fee calculator to compare channels.
The formula
Referral = price × referral % Payout = price − referral − fulfillment − storage Profit = payout − cost of goods Margin = profit ÷ price × 100
| Symbol | Meaning | Unit |
|---|---|---|
| price | Selling price the customer pays for the item | $ |
| referral % | Amazon's category commission on the sale price | % |
| fulfillment | FBA pick, pack and ship fee per unit, set by size tier and shipping weight | $ per unit |
| storage | Monthly inventory storage cost allocated to one unit (per-cubic-foot rate × unit volume × months stored) | $ per unit |
| cost of goods | Landed cost of one unit: product, packaging, freight to Amazon, duty | $ |
This follows the structure of Amazon's published FBA fee schedule: a percentage referral fee plus flat per-unit fulfillment and storage charges. Many categories also have a minimum referral fee per item (commonly $0.30), which matters for very cheap products; this calculator applies the percentage only. Some categories use tiered referral rates that change above a price threshold — enter the blended rate for your price.
Worked examples
Low-priced household item
A $19.99 small, light product in a 15% category with a $3.86 fulfillment fee, $0.15 storage per unit and a $6 landed cost.
Inputs
- Selling price19.99 $
- Referral fee15 %
- Fulfilment fee3.86 $
- Storage per unit0.15 $
- Cost of goods6 $
Result
- Profit per unit$6.98
- Marketplace payout$12.98
- Total fees$7.01
- Margin34.9%
Fees take $7.01, about 35% of the price, leaving $6.98 profit. At this price point fees are mostly fixed, so a $1 price rise goes almost straight to profit while a $1 cut hurts margin sharply.
Higher-priced electronics accessory
An $89 item in an 8% referral category, a large-standard fulfillment fee of $9.50, $1.20 storage and a $42 landed cost.
Inputs
- Selling price89 $
- Referral fee8 %
- Fulfilment fee9.5 $
- Storage per unit1.2 $
- Cost of goods42 $
Result
- Profit per unit$29.18
- Marketplace payout$71.18
- Total fees$17.82
- Margin32.8%
Fees are only about 20% of the price here, but the product cost is high, so margin lands at 32.8%. A lower referral rate helps most on expensive items in categories that offer it.
Slow seller in peak season
A $14.99 item with a $4.50 fulfillment fee and a $7 landed cost that sits in the warehouse through Q4, so storage per unit climbs to $1.10.
Inputs
- Selling price14.99 $
- Referral fee15 %
- Fulfilment fee4.5 $
- Storage per unit1.1 $
- Cost of goods7 $
Result
- Profit per unit$0.14
- Marketplace payout$7.14
- Total fees$7.85
- Margin0.9%
Profit falls to $0.14 per unit. Slow-moving, low-priced stock is where storage costs bite: send smaller shipments, raise the price or remove inventory before peak-season rates apply.
What each FBA fee depends on
Amazon publishes its rates in Seller Central and revises them, usually once a year with mid-year adjustments, so check the current schedule rather than relying on old figures.
| Fee | Charged on | What changes it |
|---|---|---|
| Referral fee | Each sale, as a % of the total price | Product category; some categories are tiered by price; minimum fee per item |
| FBA fulfillment fee | Each unit shipped | Size tier (dimensions) and shipping weight |
| Monthly storage fee | Average cubic feet stored | Season (October–December rates are higher), product size, how long stock sits |
| Aged inventory surcharge | Units stored beyond Amazon's age threshold | Sell-through speed |
| Returns processing | Returned units in some categories | Category and return rate |
Working out storage per unit
Storage is billed per cubic foot per month, not per unit, so convert it before entering it here:
- Measure the packaged unit in inches, multiply length × width × height and divide by 1,728 to get cubic feet.
- Multiply by the current monthly rate for your size tier and season.
- Multiply by the number of months a typical unit sits before selling. Inventory that turns every month carries one month of storage; stock that takes four months to sell carries four.
A unit measuring 12 × 9 × 4 inches is 432 ÷ 1,728 = 0.25 cubic feet, so its storage cost is a quarter of the per-cubic-foot rate for each month it waits.
Finding your break-even price
Because the referral fee is a percentage and everything else is a fixed amount per unit, the lowest price that covers all costs is:
break-even price = (fulfillment + storage + cost of goods) ÷ (1 − referral %)
With the default inputs that is (5.40 + 0.60 + 9.50) ÷ 0.85 = $18.24. Any price below that loses money on every sale before advertising. Add your expected ad cost per unit to the top line to get a more realistic floor, and use the break-even calculator if you also need to cover fixed monthly costs.
How to use the FBA Fee Calculator
- 1Enter the price you plan to sell at, including any shipping you charge the buyer.
- 2Enter the referral percentage for your product's category from Amazon's referral fee table.
- 3Enter the FBA fulfillment fee for your size tier and weight, and the storage cost per unit (see the storage section for how to convert per-cubic-foot rates).
- 4Enter your landed cost per unit — product, packaging, freight to the warehouse and import duty.
- 5Read profit per unit and margin; try a few prices to see how sensitive profit is.
Frequently asked questions
How much does Amazon take per sale with FBA?
On a typical mid-priced item, referral, fulfillment and storage fees together often take 30–40% of the selling price. The share is higher on cheap items because the fulfillment fee is a fixed amount, and lower on expensive ones.
What is the Amazon referral fee for most categories?
Many categories charge 15% of the total sale price, and some, such as several electronics categories, charge 8%. Check Amazon's current referral fee table for your exact category, since some rates are tiered by price.
Is the referral fee charged on shipping?
Yes. Amazon calculates the referral fee on the total amount the buyer pays, including any shipping or gift-wrap charges, not just the item price.
Why are FBA storage fees higher in Q4?
Amazon charges a higher monthly storage rate from October to December because warehouse space is in heavy demand during the holiday peak. Sending only the stock you expect to sell during that period keeps the cost down.
What is a good profit margin on Amazon FBA?
Many sellers aim for a margin of at least 20–30% after Amazon fees and product cost, because advertising, returns and price competition usually eat into it. A margin under 15% before ads leaves little room for error.
References
- FBA fulfillment fees and referral fee schedule (Seller Central) — Amazon
- Monthly inventory storage fees (Seller Central) — Amazon
About this calculator
- Built and reviewed by the Calculation Machine team · How we build and test calculators
- Last reviewed: October 24, 2026
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