Amazon FBA Calculator
Calculate the referral fee, FBA fulfillment fee and storage fee for your product on amazon.com or amazon.de. The calculator shows profit, margin, ROI and break-even ACOS per unit. No sign-up needed, and your inputs stay in your browser.
Result per unit
The result appears once every field holds a valid value.
The result is an estimate based on Amazon's published fees (as of October 31, 2026). Binding values for your product come from Amazon's Revenue Calculator.
sellerfox Profit Tracking calculates with your actual sales and the fees from your Amazon transaction data.How Amazon calculates FBA fees
With Fulfillment by Amazon (FBA), several fees apply to every unit sold. The calculator uses Amazon's published rates (as of October 31, 2026).
Referral fee
The referral fee is a percentage of the sale price. Most categories on amazon.com charge 8% to 15%, with a minimum of $0.30 per item. Some categories switch rates by price, such as clothing, baby products and jewelry. On amazon.de, Amazon applies the rate to the gross price including VAT.
Size tier
Amazon assigns every packaged unit a size tier by dimensions and weight alone. On amazon.com, a unit up to 15 × 12 × 0.75 inches and 16 oz is small standard. Larger or heavier units are large standard, bulky or extra-large.
Shipping weight and fulfillment fee
Within the size tier, the shipping weight sets the fulfillment fee. Small standard uses the unit weight. Every other tier uses the greater of unit weight and dimensional weight. Dimensional weight in pounds is length × width × height in inches divided by 139. On amazon.com, the fee also depends on the price band: below $10, $10 to $50, or above $50. Clothing has separate rates.
Storage fee
Amazon charges storage monthly by volume in cubic feet. A cubic foot of standard-size inventory costs $0.78 per month from January to September and $2.40 from October to December. Oversize inventory costs less per cubic foot. The calculator multiplies the product volume by the rate and the storage months.
Surcharge and peak season
Amazon adds a fuel and logistics surcharge to every FBA fulfillment fee. On amazon.com, the surcharge is 3.5% from April 17, 2026. On amazon.de, the surcharge is 1.5% from April 17, 2026 and 2% from November 2, 2026. According to Amazon's Revenue Calculator, the amazon.de surcharge applies to the Central Europe Programme rate, and the €0.26 fee for stock stored only in Germany is added without surcharge. From October 15, 2026 to January 14, 2027, Amazon also charges higher peak season rates for most products. The calculator picks the rate and the surcharge by the ship date, because Amazon charges the fee when the unit leaves the fulfillment center.
Low-Price FBA
On amazon.com, products priced below $10 get Low-Price FBA rates. On amazon.de, small and light products up to €20 including VAT get lower rates, or up to €11 in categories such as kitchen, books and beauty. The amazon.de product must be at most 35 × 25 × 12 cm and 400 g. The calculator checks these conditions for you.
Worked example: a jump rope on amazon.com
The calculator above starts with this example.
Price and referral fee
A jump rope in Sports and Outdoors sells for $19.99 on amazon.com. The referral fee is 15% of $19.99, or $3.00.
Size tier and fulfillment fee
The packaged box measures 10 × 6 × 2 inches and weighs 0.77 lb (12.3 oz). With a 2-inch shortest side, the box is too thick for small standard and lands in the Large standard size tier. The dimensional weight is 10 × 6 × 2 ÷ 139 = 0.86 lb, or 13.81 oz. Amazon uses the greater of unit weight and dimensional weight, so the 12+ to 16 oz band applies. Outside the peak season, the fee is $4.60, and the 3.5% surcharge brings the fee to $4.76.
Storage and profit
Two months of storage from January to September cost $0.11. After $5.00 product cost and $3.00 ad spend per unit, $4.12 profit remains. That is a margin of 20.6% and an ROI of 82.4%. The break-even ACOS is 35.6%.
| Sale price | $19.99 |
|---|---|
| Referral fee | − $3.00 |
| FBA fulfillment fee | − $4.76 |
| Storage fee | − $0.11 |
| Product cost | − $5.00 |
| Ad spend | − $3.00 |
| Profit | $4.12 |
What the calculator leaves out
Some costs depend on your account, your inventory or individual orders. These costs are not part of the result.
Refunds and returns
For every refund on amazon.de, Amazon keeps a refund administration fee of 20% of the referral fee, up to €5.00. On amazon.de, clothing and shoes with a high return rate also pay a returns processing fee.
Selling plan
The Professional selling plan costs $39.99 per month on amazon.com and €39 plus VAT per month on amazon.de.
Storage utilization and aged inventory
The storage utilization surcharge applies when your inventory covers more than 22 weeks of sales. New sellers are exempt for 365 days after the first shipment. The aged inventory surcharge starts after 181 days in storage on amazon.com and after 241 days on amazon.de.
Dangerous goods and lithium batteries
On amazon.de, products with lithium batteries and dangerous goods pay €0.10 more per unit in fulfillment fees. Dangerous goods also pay higher storage fees on both marketplaces.
Other fulfillment and inventory fees
Amazon charges separate fees for Pan-European FBA, cross-border fulfillment and low inventory levels.
Inbound placement in the US
On amazon.com, Amazon charges an inbound placement service fee unless you choose Amazon-optimized shipment splits. Enter this fee as part of your inbound cost.
Discounts and business orders
For coupons, Lightning Deals and Amazon Business orders on amazon.de, Amazon calculates the referral fee on the amount the buyer actually paid.
VAT on fees
Amazon states all amazon.de fees without VAT. Ask your tax advisor how to treat VAT on Amazon fees.
Sources and fee date
Every fee comes from Amazon's rate card, the Seller Central help pages and Amazon's pricing pages. The calculator uses the fees as of October 31, 2026.
amazon.de
- Tarifübersicht – Gebühren für Europaeffective July 1, 2026 · retrieved October 30, 2026
- Versandgebühr für Versand durch Amazoneffective November 2, 2026 · retrieved October 30, 2026
- „Versand durch Amazon“-Gebühren für niedrigpreisige Artikeleffective July 1, 2026 · retrieved October 30, 2026
- Amazon Deutschland (Gebührenübersicht)effective February 1, 2026 · retrieved October 30, 2026
- Berechnungsmethode für die prozentuale Verkaufsgebührretrieved October 30, 2026
- Monatliche Lagergebühreneffective February 1, 2026 · retrieved October 30, 2026
- Amazon's Revenue Calculator for amazon.debinding fees for a specific product
amazon.com
- 2026 US FBA fulfillment fee changeseffective January 15, 2026 · retrieved October 30, 2026
- Product size tierseffective January 15, 2026 · retrieved October 30, 2026
- Dimensional weightretrieved October 30, 2026
- Referral feesretrieved October 30, 2026
- Monthly inventory storage feesretrieved October 30, 2026
- Selling on Amazon feesretrieved October 30, 2026
- Ships in Product Packaging (SIPP)retrieved October 31, 2026
- Amazon's Revenue Calculator for amazon.combinding fees for a specific product
Frequently Asked Questions
Further reading
Amazon FBA fees with a worked example
The guide explains every FBA fee on amazon.de and shows where Amazon lists the fees actually charged.
Amazon FBA profit margin: profit and ROI
Use the formulas for profit, margin and ROI to work through an FBA product step by step.
Amazon ACOS and TACoS
Derive your break-even ACOS from your margin and set your target ACOS.
Profit Tracking
sellerfox shows profit and margin per product with your actual sales and fees.