Understanding Amazon USA seller fees completely and accurately before you source any product is one of the most important foundations of a profitable wholesale FBA business on Amazon.com. The difference between a product that generates strong margins and one that barely breaks even often comes down entirely to whether the seller correctly calculated all applicable fees before placing their wholesale order — not to the quality of their product research or the reliability of their supplier. Amazon USA charges several distinct categories of fee and each one must be accounted for individually before arriving at your true net profit per unit. Sellers who miss even one fee category — typically the FBA fulfilment fee or the storage fee — consistently overestimate their margins and build their businesses on inaccurate financial models that become apparent only when their bank account fails to reflect the growth they expected.

We are Brandhunterz Ltd — a UK registered wholesale sourcing company (Company No: 15342697) — and in this complete guide we break down every Amazon USA seller fee that affects wholesale FBA sellers — from the monthly Professional subscription and referral fees through to FBA fulfilment fees storage fees aged inventory surcharges closing fees and the additional fees that apply in specific situations. We also walk through a complete worked net profit calculation so you can see exactly how to apply every fee correctly before making your next sourcing decision.

Fee 1 — Professional Seller Subscription

The Professional seller subscription is a fixed monthly fee charged by Amazon for access to the Professional selling tier on Amazon.com. It is deducted from your account balance on a monthly basis regardless of your sales volume. For any wholesale FBA seller making meaningful sales the subscription fee is a negligible percentage of total revenue — but it must be included in your overall cost model:

Subscription Detail	Amount
Monthly subscription fee	$39.99 per month
Per-item fee	None — Professional plan has no per-item fee regardless of sales volume
Break-even versus Individual plan	Professional is cheaper than Individual from 41 sales per month — at $0.99 per item Individual costs more above this threshold

Fee 2 — Referral Fee

The referral fee is Amazon’s commission on every sale — the most significant recurring fee for wholesale FBA sellers and the one that most directly affects your per-unit profitability. It is calculated as a percentage of the total selling price and is deducted automatically when a sale is made. The rate varies by product category and has a minimum fee of $0.30 per item regardless of the category rate:

Product Category	Referral Fee Rate	Minimum Fee
Health and Beauty	8%	$0.30
Grocery and Gourmet Foods	8% to 15%	$0.30
Sports and Outdoors	8% to 15%	$0.30
Toys and Games	15%	$0.30
Home and Kitchen	15%	$0.30
Pet Supplies	8% to 15%	$0.30
Electronics	8%	$0.30
Baby Products	8% to 15%	$0.30

Fee 3 — FBA Fulfilment Fee

The FBA fulfilment fee is charged per unit sold and covers Amazon’s cost of picking packing and shipping the product from their US fulfilment centre to the buyer. It is determined by the product’s size tier and unit weight — heavier and larger products attract higher fees. Understanding which size tier your product falls into before sourcing is essential because the difference between size tiers can significantly affect profitability:

FBA Size Tier	Max Dimensions and Weight	Typical FBA Fee Range
Small Standard	15 x 12 x 0.75 inches — up to 16 oz	From $3.22
Large Standard	18 x 14 x 8 inches — up to 20 lbs	From $4.75 to $7.00+
Small Oversize	60 x 30 inches — up to 70 lbs	From $9.73+
Medium Oversize	108 inches longest side — up to 150 lbs	From $19.05+
Large and Special Oversize	Over medium oversize dimensions	From $89.98+ — avoid for wholesale FBA

For wholesale FBA sellers on Amazon USA the sweet spot is small standard or large standard products. Products in these two tiers have the lowest FBA fulfilment fees and when combined with a selling price between $15 and $40 they generate the strongest margins after referral and fulfilment fees are applied. Oversize products attract fulfilment fees that are so substantially higher that they require a much higher selling price or significantly lower wholesale cost to remain viable — and most new wholesale sellers are better served by focusing exclusively on standard-size products until their business is well established.

Fee 4 — FBA Storage Fee

Amazon charges a monthly storage fee for every unit stored in their US fulfilment centres. The fee is calculated based on the volume in cubic feet that your inventory occupies — not by unit count. It varies significantly by season with substantially higher rates applying during the peak October through December period:

Storage Period	Standard Size Rate per Cubic Foot	Oversize Rate per Cubic Foot
January to September	$0.87 per cubic foot	$0.56 per cubic foot
October to December	$2.40 per cubic foot	$1.40 per cubic foot

For most small standard wholesale products the monthly storage fee per unit is a few cents. It becomes a significant concern only when stock is slow-moving and accumulates in Amazon’s fulfilment centres over extended periods. The best strategy for minimising storage fees is maintaining lean FBA inventory — sending 30 to 60 days of cover at a time — and monitoring your sell-through rate weekly to identify products that are not moving at the velocity you projected.

Fee 5 — Aged Inventory Surcharge

The aged inventory surcharge applies to units stored in Amazon USA fulfilment centres for more than 181 days. It is charged in addition to the standard monthly storage fee and is designed to encourage sellers to maintain lean inventory levels and remove slow-moving stock before it becomes a financial burden:

Storage Duration	Surcharge Applied	Recommended Action
Under 181 days	Standard storage fee only — no surcharge	Monitor sell-through weekly — reorder only 30 to 60 days of cover
181 to 365 days	Aged inventory surcharge per unit per month	Reduce price to accelerate sell-through — or create removal order if selling price cannot cover surcharge
Over 365 days	Significantly higher surcharge — typically exceeds any remaining margin	Create removal order immediately — liquidate or dispose — the cost of holding exceeds the value of the stock

Fee 6 — Closing Fee for Media Products

A closing fee applies to sales in specific media categories in addition to the standard referral fee. This fee is charged per unit sold in the following categories:

Media Category	Closing Fee Per Unit
Books	$1.80
Music	$1.80
Video — DVD and Blu-ray	$1.80
Video Games — Consoles and Accessories	$1.80
Software and Computer Games	$1.80

The closing fee significantly impacts margins in media categories particularly for lower-priced items. A book selling for $8 that pays a 15% referral fee of $1.20 plus a $1.80 closing fee before FBA fulfilment and wholesale cost has very little margin left. Media categories require particularly careful fee calculation and are generally not recommended as a starting point for new wholesale FBA sellers on Amazon USA.

Additional Fees Every Wholesale FBA Seller Should Know

Additional Fee	When It Applies	Approximate Cost
Returns processing fee	Charged when a buyer returns a product in certain categories where Amazon offers free returns — particularly apparel shoes and jewellery	Equal to the FBA fulfilment fee for that product — charged per returned unit in applicable categories
Removal fee	When you request Amazon to return or dispose of your FBA inventory	$0.97 to $1.90 per unit for return — lower for disposal — varies by product size tier
Unplanned service fee	When stock arrives at a US fulfilment centre without correct labelling or with a mismatch from the shipment plan	$0.15 to $0.50 per unit — avoidable through correct prep and accurate shipment planning
Inbound placement service fee	When Amazon splits your inbound shipment across multiple US fulfilment centres for inventory distribution	Varies by shipment size and product — can be reduced by using Amazon’s minimal shipment splits option at a higher per-unit rate
Referral fee reimbursement — returned items	When a buyer returns a product Amazon reimburses most but not all of the referral fee — a small deduction is retained	20% of referral fee retained by Amazon on returned items — 80% reimbursed to seller

How to Calculate Your True Net Profit — A Worked Example

Here is a complete net profit calculation for a typical wholesale FBA product on Amazon USA — showing every fee correctly applied before arriving at the true net margin per unit:

Item	Amount (USD)
Amazon USA selling price	$24.99
Less: Referral fee — 8% of $24.99	– $2.00
Less: FBA fulfilment fee — small standard	– $3.86
Less: Monthly storage fee — estimated per unit	– $0.12
Less: Wholesale cost per unit	– $9.00
Less: Inbound shipping cost per unit — estimated	– $1.00
Net profit per unit	$9.01
ROI on wholesale cost — $9.01 ÷ $9.00	100% — excellent margin

Your Fee Calculation Checklist — Before Every Purchase

Fee Calculation Check — Before Every Purchase	Done
Product category confirmed — correct referral fee rate identified	☐
Product dimensions and weight measured — FBA size tier confirmed	☐
FBA fulfilment fee confirmed using AMZScout or Amazon Revenue Calculator	☐
Monthly storage fee estimated per unit based on cubic footage	☐
Wholesale cost per unit entered in calculation	☐
Inbound shipping cost per unit included in calculation	☐
Closing fee checked — media category — not applicable to most wholesale products	☐
Net profit per unit confirmed positive — minimum 25% ROI target met	☐
Aged inventory risk assessed — product has sufficient demand to sell within 90 days	☐
All fees calculated — net profit confirmed — safe to place wholesale order	✅ Approved

Conclusion — Calculate Every Fee Before Every Order

Amazon USA seller fees are completely predictable and fully calculable before you spend a single dollar on wholesale stock — which means there is no excuse for being surprised by them after you have already placed an order. Use the AMZScout FBA Calculator for every product you are considering sourcing — input the selling price referral fee rate FBA size tier and your wholesale cost — and confirm your net profit margin before committing to any purchase. Sellers who calculate fees every time build a catalogue of consistently profitable products. Sellers who estimate or skip the calculation discover their margin problems only after their capital is already committed.

Find profitable wholesale products through our Brands Directory. Research every listing with Keepa. Confirm every margin with AMZScout before placing your order.