How Amazon's fee structure is organised in 2026
Amazon charges sellers through several distinct fee categories, each with its own calculation logic. Understanding the hierarchy matters because some fees are flat per-unit charges, some are percentage-based, and some depend on physical dimensions or how long stock sits in a warehouse. Conflating them — or missing one entirely — produces an inaccurate margin model.
The primary fees every FBA seller encounters are the referral fee, the fulfilment fee, and the monthly inventory storage fee. Beyond those, sellers with slower-moving stock will encounter aged inventory surcharges. Sellers sending large shipments to a single fulfilment centre may also face inbound placement service fees, introduced more prominently in 2024 and still in effect for 2026.
Amazon updates its fee schedule — typically in February — so any calculator or spreadsheet built on prior-year figures will produce errors. The rates used throughout this article reflect the 2026 schedule published in Seller Central. If you are reading this later in the year, cross-reference against the current fee schedule before making sourcing decisions.
- ›Referral fee — a category-based percentage of the total selling price, charged on every sale regardless of fulfilment method.
- ›FBA fulfilment fee — a per-unit charge covering pick, pack, and shipping; determined by size tier and shipping weight.
- ›Monthly storage fee — charged on average daily cubic footage occupied in a fulfilment centre, with peak rates in Q4.
- ›Aged inventory surcharge — applies to units stored for more than 181 days, escalating at 271 and 365 days.
- ›Inbound placement service fee — applies when shipping inventory to fewer Amazon distribution points than their default split requires.
- ›Returns processing fee — charged for categories with high return rates (e.g. apparel, shoes) when Amazon provides free customer returns.
- ›Low-inventory-level fee — introduced in 2024 and still active; penalises sellers whose stock levels fall well below historical sales velocity.
Pull the official fee schedule PDF from Seller Central's "Fee Explainer" section at the start of each year. Save it with the date in the filename so you always know which year's rates your margin models are using.
FBA fulfilment fees: size tiers, dimensional weight, and the 2026 rate card
The fulfilment fee is usually the largest single line item for non-apparel products. Amazon assigns every ASIN to a size tier based on its dimensions and weight when packaged. The two most commonly encountered tiers are Small Standard (items up to 15 × 12 × 0.75 inches and under 16 oz) and Large Standard (items up to 18 × 14 × 8 inches and under 20 lb). Beyond that, items fall into Small, Medium, Large, or Special Oversize — each significantly more expensive per unit.
Within each tier, the fee is calculated on the greater of actual shipping weight or dimensional weight. Dimensional weight is calculated as (length × width × height) ÷ 139 for standard items. A lightweight but bulky product — say, a foam roller in a large box — can be charged at a much higher weight bracket than its actual weight suggests. Many sourcing errors trace back to a seller measuring weight on a kitchen scale and ignoring the dimensional calculation entirely.
For 2026, Amazon also maintained a fee discount programme for products in the "Low Price FBA" category — items selling at or below $10 — which carry a reduced per-unit rate to remain competitive with lower-cost fulfilment alternatives. Check eligibility before assuming standard rates apply to budget-priced lines.
- ›Small Standard (≤ 4 oz) — approximately $3.06 per unit in 2026.
- ›Small Standard (4–8 oz) — approximately $3.15 per unit.
- ›Large Standard (12–16 oz) — approximately $4.25 per unit.
- ›Large Standard (1–2 lb) — approximately $5.22 per unit.
- ›Large Standard (2–3 lb) — approximately $5.69 per unit.
- ›Small Oversize (up to 70 lb) — approximately $9.73 plus $0.42 per lb above the first pound.
Free Tool
FBA Fee Calculator
Enter your product's selling price, dimensions, weight, and category to get an instant breakdown of every FBA fee and your estimated net payout — no Seller Central login needed and far faster than working through Amazon's rate tables manually.
Measure your product in its final packaged state, not bare. Amazon's fulfilment centre will measure and weigh items on receipt, and if the packaged dimensions push the ASIN into a higher size tier, your fee will be re-rated accordingly — often without an explicit notification.
Referral fees, storage fees, and the other charges you cannot ignore
The referral fee is straightforward in concept but easy to underestimate in practice. For most categories — home goods, sports, tools, kitchen — it sits at 15% of the selling price. Electronics is lower at 8%. Clothing and accessories is 17%. Fine jewellery and watches carry tiered rates that can reach 20%. The minimum referral fee of $0.30 per item applies when the percentage amount is lower than that threshold, which catches sellers of very low-price consumables by surprise.
Monthly storage is charged per cubic foot. From January through September the standard rate is approximately $0.78 per cubic foot for standard-size items. From October through December that rate rises to approximately $2.40 per cubic foot — a threefold increase. Oversize items are cheaper per cubic foot but occupy far more space. A seller holding 500 units of a 1-cubic-foot product through November is paying around $1,200 in storage alone that month.
The low-inventory-level fee, active since 2024, adds a further per-unit charge when your 28-day and 90-day historical days of supply fall below Amazon's thresholds. For sellers running lean on purpose to reduce storage costs, this fee can appear unexpectedly. Maintaining a minimum buffer of 28 days of supply is the standard mitigation approach.
- ›Referral fee is deducted from every order — including replacements and courtesy refunds — so it affects gross margin directly.
- ›Closing fees apply to media categories (books, DVDs, music) at $1.80 per item sold, on top of the referral fee.
- ›Returns processing fees apply in high-return categories; the fee mirrors the fulfilment fee for each returned unit.
- ›Storage utilisation surcharges apply to sellers with an IPI score below 400 who have exceeded their storage limit.
- ›Disposal and removal order fees apply when you request Amazon to destroy or return inventory; rates are per-unit based on size tier.
- ›Inbound placement fees vary based on whether you opt into minimal-shipment-splits or send stock to multiple warehouses.
Check the category for your ASIN in the Product Classifier tool inside Seller Central before listing. Amazon occasionally re-categorises items after listing, which can change the referral fee percentage. Build a small buffer into your pricing model to absorb a one- or two-point category rate shift.
Worked example: calculating net payout for a Large Standard product
Consider a private-label kitchen accessory sold at $24.99. The product weighs 14 oz in its packaging, measures 10 × 7 × 3 inches, and sits in the Kitchen category. The seller is sourcing 200 units from a manufacturer at $4.50 per unit landed (including freight and import duty). Here is how the FBA fee stack reduces the $24.99 selling price to a net payout.
First, the referral fee: Kitchen carries a 15% rate, so 15% of $24.99 equals $3.75. Next, the fulfilment fee: at 14 oz the product is Large Standard, putting the fulfilment fee at approximately $4.25 per unit. Monthly storage adds a per-unit cost; assuming average inventory of 100 units at 0.15 cubic feet each (1.5 cubic feet) at the off-peak rate of $0.78 per cubic foot, that is $1.17 per month spread across estimated monthly sales of 50 units — roughly $0.02 per unit. For simplicity we will round storage contribution to $0.05 per unit when averaged across a full year including Q4 peak months.
Subtracting all FBA fees from the selling price: $24.99 − $3.75 (referral) − $4.25 (fulfilment) − $0.05 (storage allocation) = $16.94 gross payout per unit. Deducting the $4.50 cost of goods leaves $12.44 gross profit per unit before advertising spend, return allowance, and any FBA placement fees. That works out to approximately 49.8% gross margin on cost of goods, or 49.8% net of FBA fees — a solid position for a private-label product, but one that can contract quickly if advertising ACoS runs high or return rates climb.
- ›Selling price: $24.99
- ›Referral fee (15%): − $3.75
- ›FBA fulfilment fee (Large Standard, 14 oz): − $4.25
- ›Storage allocation (annualised): − $0.05
- ›Amazon payout: $16.94
- ›Cost of goods (landed): − $4.50
- ›Gross profit per unit: $12.44 (before PPC and returns)
A rough rule of thumb used by experienced FBA sellers: Amazon fees (referral + fulfilment) typically consume 25–35% of selling price for standard products. If your combined fees exceed 40% of selling price, you should re-examine whether FBA is the right fulfilment route, or whether repricing is possible.
Aged inventory surcharges and inbound placement fees: the costs sellers miss most
Aged inventory surcharges are assessed monthly on units that have been in a fulfilment centre for more than 181 days. The current schedule charges approximately $0.50 per cubic foot per month for units aged 181–270 days, rising to $1.50 per cubic foot per month at 271–365 days, and $6.90 per cubic foot per month (or $0.15 per unit, whichever is greater) beyond 365 days. These numbers compound: a seller with 50 units of a 0.3-cubic-foot product sitting at the 365-day mark is paying over $100 per month simply to store unsold stock.
The inbound placement service fee is less intuitive. When Amazon receives a shipment, it distributes inventory across its fulfilment network. If a seller opts to send everything to a single location rather than splitting shipments to multiple warehouses (as Amazon prefers), Amazon charges a placement fee per unit to redistribute the stock itself. For standard-size items, this fee is typically $0.27–$0.38 per unit for the minimal-split option. Sellers who manage their own multi-warehouse splits using Amazon's "Distributed" option can avoid this entirely, at the cost of more complex inbound logistics.
The practical defence against both of these fees is inventory hygiene. Set up automated alerts in your inventory management system at the 120-day mark — well before the 181-day threshold — so you have time to run a promotion, lower price, or submit a removal order. For placement fees, run the numbers both ways before your next inbound shipment: compare the per-unit placement charge against the cost of arranging your own multi-warehouse split, since for larger shipments the "Distributed" option is often cheaper even after accounting for the extra coordination.
- ›Set inventory-age alerts at 120 days to act before the 181-day surcharge threshold.
- ›Compare minimal-split placement fees against a self-managed distributed shipment for large inbound orders.
- ›Run removal or disposal orders before the 271-day and 365-day surcharge escalations.
Frequently Asked Questions
How are Amazon FBA fulfilment fees calculated in 2026?
Fulfilment fees are based on the product size tier and shipping weight (or dimensional weight, whichever is greater). Amazon assigns every item to a size tier — Small Standard, Large Standard, or one of the Oversize tiers — and applies a per-unit rate from its current fee schedule. The fee also varies slightly by sales channel (Amazon.com vs Seller-Fulfilled orders). Always check the current rate card in Seller Central, as Amazon typically updates rates in February each year.
What is the Amazon referral fee and does it apply on top of FBA fees?
Yes, the referral fee is a separate charge on top of FBA fulfilment fees. It is calculated as a percentage of the total selling price (including any gift-wrap charges) and varies by category — typically between 6% and 17% for most product types, with some categories like fine jewellery going higher. There is also a per-item minimum referral fee (usually $0.30) that applies if the percentage amount falls below that threshold. Both fees must be accounted for when calculating true net margin.
How does Amazon charge for monthly inventory storage in 2026?
Monthly storage fees are charged based on the daily average volume (in cubic feet) your inventory occupies in Amazon's fulfilment centres during the month. Standard rates apply from January through September, with significantly higher peak rates during October, November, and December. Sellers on the Individual plan or with high IPI scores may face additional storage limits. Keeping fast-moving products and liquidating slow sellers before the Q4 peak is the most effective way to keep storage costs manageable.
What are aged inventory surcharges and when do they kick in?
Aged inventory surcharges (previously called long-term storage fees) apply to units that have been in a fulfilment centre for more than 181 days. Amazon assesses these on a monthly basis, and the surcharge per cubic foot increases significantly at the 271-day and 365-day thresholds. The fees are designed to encourage sellers to maintain lean, fast-turning inventory. Running regular inventory health reports and using FBA removal or disposal orders before the 181-day mark is standard practice for avoiding these costs.
Can I use a fee calculator before sourcing a product to check if it will be profitable?
Absolutely — this is one of the most valuable uses of an FBA fee calculator. By entering your expected selling price, product dimensions, weight, and category before you place a sourcing order, you can model your net margin and decide whether the product is worth pursuing. Many experienced sellers use a minimum 25–30% net margin threshold as a sourcing filter. The UserToolbox FBA Fee Calculator at fba.usertoolbox.com lets you run these pre-sourcing checks instantly without logging into Seller Central.
Conclusion
FBA fees are not a single line item — they are a stack of referral, fulfilment, storage, aged-inventory, and placement charges that each move independently. Sellers who model all of them before sourcing a product, and who revisit the model whenever Amazon updates its fee schedule, are the ones who protect their margins quarter after quarter.
The fastest way to run that model is the free FBA Fee Calculator at usertoolbox.com — enter your selling price, dimensions, weight, and category to see your full fee breakdown and estimated net payout in seconds. Head to fba.usertoolbox.com and check your next product before you commit to a sourcing order.