Amazon FBA Fees Explained: Complete Breakdown for 2026

How Amazon FBA fees work

When you sell via FBA, Amazon charges several fees at different stages. Some are per-sale, some are monthly, and some are triggered by specific events (returns, long-term storage, removals).

Understanding all of them is the difference between thinking you're profitable and actually being profitable. Most sellers track the obvious fees (referral and fulfillment) but underestimate or forget about storage, long-term storage, placement, and return processing fees. These "hidden" fees can easily add 10–20% to your total cost structure.

The core FBA fees

Referral fee

Amazon's commission on every sale. This is the platform fee you pay for access to Amazon's marketplace and customer base. It ranges from 8% (electronics) to 15% (most categories) to 45% (Amazon device accessories).

The referral fee is charged on the total sale price including any shipping charged to the customer. It's non-negotiable, every seller pays it, whether you use FBA or FBM.

FBA fulfillment fee

This covers picking, packing, shipping, and customer service for each unit sold. It's based on the item's size tier and shipping weight:

• Standard-size items: approximately $3.00–$6.00 per unit
• Oversize items: $8.00–$40.00+ per unit

These fees change annually. Always check Amazon's current fee schedule. The fulfillment fee is what makes FBA expensive for low-priced items. If you're selling a product for $8.99 and the fulfillment fee is $4.75, your margins evaporate quickly.

Monthly inventory storage fee

Charged per cubic foot of storage space your inventory occupies in Amazon's warehouses. The rate varies by season:

• Standard-size (January–September): $0.87/cubic foot
• Standard-size (October–December): $2.40/cubic foot (the peak season surcharge)
• Oversize (January–September): $0.56/cubic foot
• Oversize (October–December): $1.40/cubic foot

Storage fees are calculated based on your average daily inventory volume. Sending in too much inventory means paying storage on units that aren't selling.

Long-term storage fee

The fee most sellers forget about, and it can be devastating. Amazon charges additional fees on inventory stored over 181 days:

• 181–365 days: $6.90 per cubic foot or $0.15 per unit (whichever is greater)
• Over 365 days: even higher charges

This fee can destroy margins on slow-moving inventory. A product that seemed profitable based on per-unit economics can become a money pit if it sits in Amazon's warehouse for months.

Additional fees most sellers miss

Inbound placement service fee

Amazon charges for distributing your inventory across multiple fulfillment centres. You can reduce this by shipping to multiple warehouses yourself, but most sellers pay the fee for convenience. It adds $0.20–$1.00+ per unit depending on size and how many destinations Amazon needs to distribute to.

Return processing fee

When a customer returns an item, Amazon charges a return processing fee in certain categories (apparel, shoes, jewellery, etc.). Plus, returned items often can't be resold as new, creating additional loss on top of the processing fee.

Removal and disposal fees

Getting your inventory back from Amazon costs $0.97–$13.05 per unit depending on size. Disposal is slightly cheaper but you lose the inventory entirely. These add up fast when clearing slow movers before long-term storage fees hit.

Unplanned service fees

If your shipments don't meet Amazon's prep requirements (wrong labelling, missing barcodes), Amazon charges $1.00–$2.50+ per unit to fix them. Avoidable, but a common surprise for new sellers.

Aged inventory surcharge

Additional monthly charges on inventory aged over 181 days, stacking on top of regular storage fees. This is separate from the long-term storage fee. It's an ongoing monthly surcharge that grows the longer inventory sits.

How to calculate your true FBA profit

Let's walk through a real example to show how fees accumulate:

Most sellers would have guessed their margin was much higher without tracking all fees. And this example doesn't include advertising costs, which for most sellers add another 10–15% of revenue.

For per-SKU profitability tracking, tools like Sellerboard ($19/month) are excellent. For automated fee monitoring workflows that alert you when margins drop, Jarvio can pull your fee data and flag products below your target margin.

How to reduce your FBA fees

1. Optimise product packaging: smaller packaging means a lower size tier, which means lower fulfillment fees. Even reducing dimensions by a centimetre can drop you into a cheaper tier.
2. Monitor aged inventory: remove or discount slow-moving inventory before long-term storage fees hit at 181 days. Set up automated alerts to catch these early.
3. Use FBM for the right products, large, heavy, or slow-moving items may be cheaper to fulfill yourself. See our FBA vs FBM comparison.
4. Ship to multiple fulfillment centres, reduce inbound placement fees by distributing inventory yourself.
5. Improve product quality, lower return rates mean fewer return processing fees and less unsellable inventory.
6. Automate fee tracking, set up weekly monitoring that tracks your total Amazon fees by product and alerts you when margins drop below your target. Catching margin erosion early is far cheaper than discovering it at the end of the quarter.