Amazon FBA Fees Explained for Beginners (2026 Guide)

The two fees on every single sale

Strip away everything else and two charges apply to essentially every FBA order.

The referral fee is Amazon's commission for the sale. It's a percentage of the total price the buyer pays, including shipping and gift wrap, not just your item price. The percentage depends on the category. Most categories sit at 15%, but some run lower and a few run much higher. Amazon also applies a minimum referral fee per item in most categories, which matters if you're selling anything cheap.

The FBA fulfillment fee covers picking, packing, shipping the unit and handling customer service for that order. It's a flat dollar amount per unit, not a percentage. The amount depends on how big and how heavy the packed item is.

Those two together are your baseline. Everything in the sections below stacks on top.

How the referral fee actually gets calculated

Two things trip up beginners here.

First, the fee is on the full amount the customer pays. If you charge $24 for the product and $6 for shipping, the referral fee applies to $30. Sellers who plan to make their money on inflated shipping charges find out fast that Amazon takes a cut of that too.

Second, category assignment isn't your choice. Amazon decides which referral fee category your listing falls into based on how it's classified in the catalog, and some categories are split into tiers where the rate changes above or below a price threshold. A product that looks like apparel to you might be classified somewhere else entirely, with a different rate.

Media items (books, DVDs, video games and similar) also carry a closing fee of $1.80 per unit on top of the referral fee. If you're not selling media, ignore that one.

• Referral fee applies to item price plus shipping and gift wrap
• Rates vary by category, with 15% being the most common
• A per-item minimum applies in most categories
• Media categories add a fixed closing fee per unit

The fulfillment fee: it's about the box, not the product

Amazon measures your product after it's packaged and ready to ship. It measures length, width, height and weight, then drops the unit into a size tier: small standard, large standard, or one of several oversize tiers. Each tier has its own fee schedule, and inside each tier the fee climbs with weight.

This is where a lot of first products die. A pound of difference or a half inch on the longest side can push you into the next tier, and the jump between tiers is not small. Two products that look nearly identical on the product page can have very different fulfillment costs.

Amazon also uses dimensional weight for larger items, meaning a light but bulky product gets charged as if it were heavier. A pillow costs more to ship than its scale weight suggests.

One more thing worth knowing: Amazon runs a separate, lower fulfillment rate for low-priced items below a certain price threshold. If you're selling inexpensive goods, check whether your product qualifies before you assume the standard rate.

Practical takeaways for beginners: prefer products that are small, light and durable. Shrinking a box by an inch is one of the few cost levers you control after launch.

Storage fees and the inventory surcharges

Once your units sit in an Amazon warehouse, you pay rent.

Monthly inventory storage is charged per cubic foot of space your inventory occupies, calculated on the daily average across the month. Rates are higher for oversize items and they jump significantly in the fourth quarter, when warehouse space is scarce. Sellers who load up on inventory in October and don't sell through it pay for that twice: once in storage, once in cash tied up.

Then come the surcharges that punish slow inventory. An aged inventory surcharge applies to units that have been sitting for an extended period, and it gets steeper the longer they sit. There's also a fee tied to keeping too little inventory relative to your sales rate, which sounds like the opposite problem but exists because Amazon has to ship from farther away when your stock is thin.

If you send inventory into a single warehouse instead of splitting it across the locations Amazon requests, an inbound placement service fee applies. Splitting shipments yourself is more work but avoids the charge. Either way, decide before you print labels.

None of these are avoidable in the abstract. They're all avoidable with decent inventory planning, which is another way of saying they punish guessing.

• Monthly storage, charged per cubic foot, higher in Q4
• Aged inventory surcharge on units that sit too long
• Low inventory level fee when stock runs thin against demand
• Inbound placement fee if you don't split shipments as requested

The fees that show up after the sale

Your first settlement report will include line items you didn't plan for.

Returns processing. In categories with high return rates, Amazon charges a fee on returns above a category threshold. And when a customer returns an item, you refund the sale price but you don't get the fulfillment fee back. A returned unit costs you the shipping both ways plus whatever condition the product comes back in.

Removals and disposals. Getting unsold inventory out of the warehouse costs money per unit, whether you have it shipped back to you or destroyed. Budget for this on any product you're testing.

Unplanned prep. If your units arrive without required barcodes, polybags or bubble wrap, Amazon does the prep and bills you per unit. Sort this out with your supplier before the container ships.

Advertising and coupons. Not technically FBA fees, but they come out of the same margin. Almost no new listing sells without ad spend, so treat it as a cost of doing business rather than an optional extra.

And the account-level cost: the Professional selling plan runs $39.99 per month regardless of how much you sell. The Individual plan has no monthly fee but charges $0.99 per unit sold, which stops making sense above roughly 40 units a month.

Running the math before you commit

Here's the order to work in when you're evaluating a product.

Start with the realistic selling price, not the one you hope for. Subtract the referral fee on that full amount. Subtract the fulfillment fee for the size tier your packed unit will land in. Subtract a monthly storage allocation per unit based on how fast you expect to sell through. Subtract your landed cost: unit price from the supplier plus freight plus duty plus any prep. Then subtract an allowance for ads and returns.

What's left is your actual margin. If that number is thin before you've spent a dollar on advertising, the product doesn't work, no matter how good the demand looks.

Two cautions. Fee schedules change, usually at the start of the year and sometimes midyear, so pull current rates rather than trusting a number you read somewhere. And measure your packed dimensions yourself instead of trusting a supplier's spec sheet, because a quarter inch decides which tier you're in.

Doing this by hand for every candidate product is tedious, which is why most people skip it and find out later. Run your numbers through the SellerScale calculator instead: enter your price, cost and dimensions and see the margin that survives the fees.