Amazon FBA Fees 2026: Complete Breakdown for Sellers

Priya sold 1,140 units of a stainless steel pour-over kettle in March. Revenue: $37,962. She told her accountant it had been her best month ever.

Her accountant came back with a number she did not expect: $1,809 in profit. Less than 5%.

Nothing had gone wrong, exactly. Her cost of goods was the same as always. Her ACoS was a respectable 22%. What had changed was that the kettle had crept from 15.9 to 16.4 inches in its new retail box, tipping it into a larger size tier. That added roughly a dollar per unit in fulfillment. Two dollars a month in extra storage per cubic foot on 900 units of buffer stock. An inbound placement fee she had been eating for a year without reading the line item.

None of those numbers were dramatic on their own. Stacked, they moved her margin from 12% to under 5%, and her PPC target ACoS, which she had never recalculated, was now spending her into a loss on every advertised sale.

That is the thing about Amazon FBA fees. They rarely kill you in one blow. They accumulate quietly, in units of forty cents, and the first place the damage shows up is in advertising, because ad spend is the one cost that scales with volume and is entirely under your control.

What Amazon FBA Fees Actually Cover

When people ask what Amazon FBA fees are, they usually mean one number. There isn't one. There are three fees almost every seller pays, four more that apply conditionally, and a handful that only appear when something goes wrong.

Amazon publishes current rates in its FBA fee schedule inside Seller Central, and rates change at least once a year, typically announced in December and effective in January, with a mid-year adjustment on storage. Every figure below is a representative 2026 US marketplace rate. Treat them as the shape of the math, then pull your exact numbers from your own fee preview report before you make decisions with them.

Here is the full stack, in the order it hits your account.

1. Referral Fee (Every Sale, FBA or Not)

The referral fee is Amazon's commission for the sale itself. You pay it whether you use FBA or ship yourself.

For most categories it is 15% of the total sales price, including shipping and gift wrap charges. The exceptions matter:

• Electronics, video game consoles, cameras: 8%
• Computers: 8%
• Consumer electronics accessories: 8-15% depending on subcategory
• Amazon Device Accessories: 45%
• Fine art, coins, collectibles: tiered, often 5-20%
• Apparel and shoes: 17% above a price threshold, 5% below it

There is also a minimum referral fee of $0.30 per item in most categories. If you sell a $1.50 item, you are paying 20% effective, not 15%.

The trap here is "total sales price." Referral fee is charged on the amount the customer pays, so if you offer a coupon, the fee follows the discounted price. But if you charge shipping on an FBM order, the fee follows the price plus shipping.

2. FBA Fulfillment Fee (Pick, Pack, Ship)

This is the per-unit charge for Amazon picking your item off a shelf, boxing it, and handing it to a carrier. It is calculated from size tier and shipping weight, and it is the single largest FBA-specific cost for most sellers.

Representative 2026 US rates for non-apparel:

Size tier is decided by the greater of unit weight and dimensional weight, and by your longest, median and shortest side. Small standard means the packaged unit fits within 15 x 12 x 0.75 inches and weighs 16 oz or less. Cross any one of those limits and you land in large standard, which starts about eighty cents higher and climbs from there.

This is where Priya lost her margin. Half an inch on the longest side, and every unit she has sold since costs about a dollar more to fulfill.

3. Monthly Inventory Storage Fee

Charged per cubic foot of space your inventory occupies, averaged across the month, and it is seasonal:

That Q4 rate is triple. It is deliberate. Amazon wants warehouse space for fast-moving holiday inventory, not your slow sellers. Any Q4 plan that involves shipping in September and hoping needs to price in three months of triple storage.

Storage is also charged on a utilization surcharge basis for sellers whose inventory sits far longer than it sells. If your inventory-to-sales ratio is poor, you pay more per cubic foot than a seller with the identical product and better turns.

4. Aged Inventory Surcharge

Inventory sitting 181 days or longer gets an additional monthly charge on top of storage, escalating with age:

• 181-270 days: ~$0.50 / cu ft
• 271-365 days: ~$1.00 / cu ft
• 365+ days: ~$1.50 / cu ft, or $0.15/unit, whichever is greater

Slow-moving stock therefore pays twice: once in storage, once in surcharge, and in Q4 both at the elevated rate. This is why a stale SKU can quietly cost more per month than it earns. Our inventory management guide covers the removal-versus-liquidate math in detail.

5. Inbound Placement Service Fee

Introduced to charge sellers for the convenience of sending inventory to one location rather than splitting shipments across Amazon's network. You choose your service level when you create a shipment:

• Minimal splits (one location, Amazon distributes): highest fee, ~$0.30-$1.30+ per unit depending on size and weight
• Partial splits (two to three locations): reduced fee
• Optimized splits (Amazon's preferred distribution, typically four-plus locations): $0

Most sellers default to minimal splits because it is simpler, then never look at the line item again. On a standard-size unit, choosing optimized splits over minimal can save $0.30-$0.45 per unit, which on 10,000 units a year is $3,000-$4,500 for the inconvenience of building four shipments instead of one.

6. Low-Inventory-Level Fee

A per-unit fee charged on standard-size items when your historical days of supply run consistently thin, roughly under 28 days measured on both a short and long-term basis. It runs about $0.30-$0.90 per unit.

The logic from Amazon's side is that thin inventory forces longer, costlier shipping lanes. The consequence for sellers is that running lean is no longer free. The old advice to hold minimal stock and reorder often now carries a direct per-unit cost, and it interacts badly with advertising: a campaign that suddenly performs will burn down your days of supply and trigger the fee.

7. Returns Processing Fee

Applied in categories with return rates above a category-specific threshold. Apparel and shoes have always been charged, and the fee now extends to many other categories on the units returned above the threshold. It is roughly equal to the fulfillment fee for that size tier.

For a product with a 12% return rate in a category with a 9% threshold, you pay the processing fee on the excess 3% of units. That is a small number that scales exactly with volume.

8. The Occasional Ones

• Removal / disposal: ~$0.97-$1.50+ per unit depending on size
• Liquidation: a percentage of the recovery value
• FBA labeling: ~$0.55 per unit if Amazon applies your barcodes
• Polybagging / bubble wrap: ~$1.00-$1.60 per unit for prep Amazon performs
• Unplanned prep: charged when your shipment arrives non-compliant
• Professional selling plan: $39.99 monthly, flat, not per unit

A Full Worked Example

Abstract percentages don't help. Here is one SKU, all in.

Product: ceramic pour-over dripper, $29.99 retail, large standard size tier, 14 oz shipping weight, 0.09 cu ft, sells 400 units/month, 90-day average inventory.

$11.62 per unit is the number that matters. Not revenue, not gross margin, not the 15% referral fee people quote. The $11.62 is every dollar you have available to spend on advertising, and it is the input to the only formula that governs your PPC.

Your Fee Stack Sets Your Break-Even ACoS

Here is the connection almost nobody makes explicitly.

For the dripper: $11.62 / $29.99 = 38.7% break-even ACoS.

At exactly 38.7% ACoS, advertised sales generate zero profit. Every point below is profit; every point above is a loss you are paying for volume. If you want the full mechanics of the metric, our complete guide to Amazon ACoS walks through the calculation and the common misreadings, and good ACoS benchmarks by category shows where sellers in your vertical actually land.

Now watch what a modest fee change does.

Suppose next January the fulfillment fee rises $0.40, storage rises 10%, and your packaging redesign pushes you into the next weight band for another $0.55. Total damage: about $1.00 per unit.

Your break-even moved 3.3 points. If your campaigns are still running at a 24% target, you have gone from making 15% on advertised sales to making about 11%, a 27% reduction in profit per advertised unit, from a fee change you might never have opened the email about.

Multiply that across every SKU, in a catalog where each one has a different size tier and return rate, and you get the actual reason profitable-looking accounts stop being profitable: the target ACoS was set once, and the fee stack underneath it kept moving.

Five Ways to Actually Lower Your FBA Fees

Not theory. Things that move the number.

1. Fight for the Size Tier, Not the Ounce

Fee tiers are step functions, not slopes. Shaving 2 oz off a unit that sits in the middle of its band saves nothing. Shaving a quarter inch off a unit sitting at 15.9 inches saves roughly a dollar, forever. Pull your fee preview report, sort by size tier, and find every SKU within 5% of a boundary. That list is your entire packaging roadmap.

2. Switch to Optimized Inbound Splits

It costs you an afternoon of extra shipment building per restock and eliminates the placement fee entirely. On a catalog moving 30,000 units a year, this is real money for zero product change.

3. Fix Your Turns Before Q4

Storage triples in October. Aged inventory surcharge starts at 181 days. A SKU you ship in August that doesn't sell until January pays elevated storage for three months and may cross into surcharge territory. Set your Q4 inventory plan so anything arriving after September has a sell-through plan attached. See our inventory management guide for the reorder math.

4. Attack the Return Rate, Not Just the Returns Fee

The returns processing fee only applies above the category threshold, so a two-point improvement in return rate can remove the fee entirely rather than just reduce it. Most returns in physical goods trace to expectation mismatch: sizing, scale, material. Better images and clearer dimension callouts in your product listing fix more returns than any policy change.

5. Run the FBM Comparison on Your Worst SKUs

For heavy, low-margin, slow-moving items, self-fulfillment sometimes wins. Not usually, since you lose Prime badge conversion, but on an oversize SKU paying $12 fulfillment plus surcharged storage, run the numbers before you assume FBA is correct.

Frequently Asked Questions

How much are Amazon FBA fees in total?

For a typical standard-size product priced at $25-$35, expect 30-40% of the selling price to go to Amazon between referral fee, fulfillment, storage and placement. Referral is 15% for most categories, fulfillment is $3-$7 depending on size and weight, and everything else usually lands under a dollar per unit.

Are FBA fees charged per item or per month?

Both. Referral, fulfillment, placement and returns processing are per item. Storage and aged inventory surcharges are monthly, based on space occupied. The Professional selling plan is a flat $39.99 per month regardless of volume.

Do FBA fees include shipping to the customer?

Yes. The fulfillment fee covers picking, packing, shipping, customer service and returns handling. It does not cover your inbound freight to Amazon's warehouses, which you pay separately.

Why did my FBA fee increase without warning?

Almost always a size-tier or weight reclassification. Amazon re-measures units periodically, and packaging changes, seasonal humidity, or a new box supplier can shift the measured dimensions. Check the fee preview report for the measured dimensions Amazon has on file and open a case if they are wrong.

What is a good margin after FBA fees?

Aim for 25-35% contribution margin after all Amazon fees and COGS, before advertising. Below 20%, your break-even ACoS gets too tight to advertise profitably at competitive CPCs. Below 15%, most products cannot be scaled with PPC at all.

How do FBA fees affect my PPC budget?

Directly. Contribution margin after fees is the pool advertising spends from, so it sets your break-even ACoS. Two sellers with identical revenue and identical ACoS can have opposite profit outcomes if their fee stacks differ. Set advertising targets from margin, not from what a competitor's ACoS looks like. Our PPC budget strategy guide covers how to allocate from there.

The Point

Amazon FBA fees are not a line item to accept and forget. They are the denominator of every advertising decision you make.

Most sellers audit their PPC monthly and their fee structure never. That is backwards. A 3% improvement in ACoS is a good month of campaign work. A half-inch reduction in package length is worth about the same, permanently, on every unit you will ever ship, and it takes one conversation with your supplier.

Pull your fee preview report this week. Calculate contribution margin per SKU. Convert it to a break-even ACoS. Then go look at what your campaigns are actually targeting.

For a lot of sellers, those two numbers have not agreed for a very long time.