What are the Amazon FBA fulfilment fees per unit?

Fulfilment is charged by size tier, then weight band, then a price band of under 10 dollars, 10 to 50 dollars, or over 50 dollars. A small standard 12 ounce item in the 10 to 50 dollar band costs 3.78 dollars, plus a 3.5% fuel surcharge effective 17 April 2026.

How is Amazon dimensional weight calculated?

Amazon bills on whichever is greater, the actual packed weight or the dimensional weight, which is length times width times height divided by 139. A light product in an oversized box is charged on the box, not on the product.

What is the Amazon backend search terms byte limit?

Amazon indexes 250 bytes of backend search terms per listing and silently drops everything past it, with no warning in Seller Central. Bytes, not characters, so accented and non-Latin letters cost more than one each. Do not repeat words already in your title and skip commas.

How much does Amazon FBA storage cost?

Standard size storage is 0.78 dollars per cubic foot per month from January to September and 2.40 from October to December. Oversize is 0.56 and 1.40. Holding stock through Q4 therefore costs about three times what it costs the rest of the year.

Reference, updated September 2026

Amazon Referral Fees and FBA Size Tiers: The 2026 Tables

Q: What are the Amazon FBA size tiers in 2026?

There are five tiers, assigned by the packed dimensions and weight of the box that ships. Small standard tops out at 15 inches and 16 ounces, large standard at 18 inches and 20 pounds, then small bulky, large bulky and extra large. Small bulky was introduced on 15 January 2026.

Every percentage and every fulfilment band on one page, so you can price a product without opening six browser tabs. Amazon US rates, checked 6 September 2026.

250bytes of backend search terms

80title characters search shows

0.75 insmall vs large standard

3.5%fuel surcharge on FBA fees

Run these numbers in the calculator

What is the Amazon referral fee by category?

Amazon takes a referral fee as a percentage of the total sale price on every unit, whether you use FBA or ship yourself. Most categories sit at 15%, electronics and computers at 8%, and a minimum of 0.30 dollars per unit applies when the percentage works out lower.

Flat rate categories

Category	Fee
Home and Kitchen	15%
Consumer Electronics	8%
Computers	8%
Video Game Consoles	8%
Video Games and Accessories	15%
Appliances, full size	8%
Toys and Games	15%
Sports and Outdoors	15%
Tools and Home Improvement	15%
Office Products	15%
Lawn and Garden	15%
Pet Supplies	15%
Musical Instruments and AV	15%
Footwear	15%
Eyewear	15%
Automotive and Powersports	12%
Business and Industrial	12%
Base Equipment Power Tools	12%
Tires	10%
Gift Cards	20%
Amazon Device Accessories	45%
Everything else	15%

Price-tiered categories

Category	Fee
Clothing and Accessories	5% to $15, 10% from $15 to $20, 17% over $20
Beauty and Personal Care	8% to $10, then 15%
Baby Products	8% to $10, then 15%
Grocery and Gourmet	8% to $15, then 15%
Electronics Accessories	15% to $100, then 8%
Furniture	15% to $200, then 10%
Appliances, compact	15% to $300, then 8%
Lawn Mowers, Snow Throwers	15% to $500, then 8%
Jewelry	20% to $250, then 5%
Watches	16% to $1,500, then 3%
Fine Art	20% to $100, 15% to $1,000, 10% to $5,000, 5% above

Two extras people forget. Media categories (books, DVD, music, software) pay 15% plus a 1.80 dollar closing fee per item. Pet Supplies veterinary diets are charged at 22%, not 15%.

Referral fees were frozen through 2025 and 2026, so these rates are stable for now. Fulfilment fees were not frozen. They moved in January and again in April 2026.

What are the Amazon FBA size tiers in 2026?

There are five tiers, and Amazon assigns yours by the packed dimensions and weight of the box that ships. Small standard tops out at 15 inches and 16 ounces, large standard at 18 inches and 20 pounds, then small bulky, large bulky and extra large. Get the tier wrong and your whole margin estimate is wrong.

Tier	Longest side	Median side	Shortest side	Weight
Small standard	15 in	12 in	0.75 in	16 oz
Large standard	18 in	14 in	8 in	20 lb
Small bulky	18 to 37 in	24 in	24 in	20 to 50 lb
Large bulky	37 to 59 in	33 in	33 in	50 to 150 lb
Extra large	over 59 in	any	any	any

Dimensional weight catches people out. Amazon bills on whichever is greater, your actual weight or length times width times height divided by 139. A light product in an oversized box gets charged on the box. Small bulky is a new tier, introduced 15 January 2026.

What are the FBA fulfilment fees per unit?

Fulfilment is charged by tier, then by weight band, then by a price band: under 10 dollars, 10 to 50 dollars, and over 50 dollars. Add 3.5% fuel surcharge to every figure below, effective 17 April 2026. Peak season, October to December, is charged at higher rates than these.

Small standard, non-peak

Weight	Under $10	$10 to $50	Over $50
2 oz or less	2.43	3.32	3.58
2 to 4 oz	2.49	3.42	3.68
4 to 6 oz	2.56	3.45	3.71
6 to 8 oz	2.66	3.54	3.80
8 to 10 oz	2.77	3.68	3.94
10 to 12 oz	2.82	3.78	4.04
12 to 14 oz	2.92	3.91	4.17
14 to 16 oz	2.95	3.96	4.22

Bulky and extra large

Tier	Base	Per lb over 1 lb
Small bulky	6.78 to 7.55	0.38
Large bulky	8.58 to 9.35	0.38
Extra large, to 50 lb	25.56 to 26.33	0.38
Extra large, 50 to 70 lb	36.55 to 37.32	0.75
Extra large, 70 to 150 lb	50.55 to 51.32	0.75

Large standard, non-peak

Weight	Under $10	$10 to $50	Over $50
4 oz or less	2.91	3.73	3.99
4 to 8 oz	3.13	3.95	4.21
8 to 12 oz	3.38	4.20	4.46
12 to 16 oz	3.78	4.60	4.86
1 to 1.25 lb	4.22	5.04	5.30
1.25 to 1.5 lb	4.60	5.42	5.68
1.5 to 1.75 lb	4.75	5.57	5.83
1.75 to 2 lb	5.00	5.82	6.08
2 to 2.25 lb	5.10	5.92	6.18
2.25 to 2.5 lb	5.28	6.10	6.36
2.5 to 2.75 lb	5.44	6.26	6.52
2.75 to 3 lb	5.85	6.67	6.93
3 to 20 lb	6.15	6.97	7.23

Over 3 lb on large standard, add 0.08 dollars for every additional 4 oz on top of the base.

Monthly storage, per cubic foot

Size	Jan to Sep	Oct to Dec
Standard	0.78	2.40
Oversize	0.56	1.40

Peak season triples storage. Q4 standard storage is 2.40 dollars per cubic foot against 0.78 for the rest of the year, so holding stock through October to December costs three times what most spreadsheets assume.

What do all these fees add up to on a real product?

On a 24.99 dollar Home and Kitchen product weighing 12 ounces at 9 by 6 by 2 inches, Amazon takes 8.17 dollars and your own costs come to 7.70, leaving 9.12 net per unit. That is a 36.5% margin and 118% return on the cash you tied up.

Line	Amount	What it is
Selling price	24.99	What the customer pays
Referral fee, 15%	-3.75	Taken on the full sale price
FBA fulfilment, large standard	-4.35	4.20 base plus 3.5% fuel surcharge
Storage, 1.5 months	-0.07	0.063 cu ft at 0.78 per month
Product cost	-6.00	Supplier invoice
Inbound shipping	-1.20	Supplier to Amazon warehouse
Prep, packaging, returns allowance	-0.50	The line people leave out
Net profit per unit	9.12	36.5% margin, 118% ROI

Drop the price to 8 dollars and the same product loses 4.47 per unit, because the FBA fee barely falls while your costs do not move at all. Cheap products are where FBA maths turns negative fastest.

What are the Amazon listing character and byte limits?

Titles allow 200 characters but search results show roughly the first 80. You get five bullet points. Backend search terms are capped at 250 bytes, and Amazon silently drops everything past that with no warning anywhere in Seller Central.

Field	Hard limit	What actually happens
Product title	200 characters	Search results show roughly the first 80 on desktop and fewer on mobile. Put the buying keyword before character 80.
Bullet points	5 bullets	Only the first five render. Keep each under 200 characters or mobile truncates it mid sentence.
Backend search terms	250 bytes	Amazon indexes 250 bytes and drops the rest. Bytes, not characters, so accented and non-Latin letters cost more than one each.

Three habits that waste your 250 bytes. Repeating words already in your title, since Amazon indexes a keyword once. Using commas, since Amazon splits on spaces. Adding plurals and misspellings, since Amazon handles those itself.

Words that can get a listing suppressed. Best, Sale, Free Shipping, 100%, exclamation marks, and any claim about your own ranking. Amazon treats these as promotional copy in the title field.

These tables tell you the cost. They cannot tell you the demand.

Knowing what a product costs to sell is only half the decision. The other half is how many units the category actually moves in a month, and that number lives inside Amazon. TechMachaw readers get 20% off their first six months of Helium 10, applied automatically with no code to enter.

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How to use this page. Rates are Amazon US, checked 6 September 2026 against Amazon’s published schedules. Amazon changes fulfilment fees more than once a year, so confirm anything you are about to spend money on in Seller Central first. Apparel, dangerous goods and peak season are charged differently.

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