Amazon FBA Fee Calculator

Amazon FBA Fees at a Glance

Amazon FBA charges its fees on the item price.

Fee	Percentage	Flat	Notes
Referral fee	15%	—	Most categories
FBA fulfilment	—	$3.22	Small standard-size unit

Fees That Apply in Some Cases

Fee	Percentage	Flat	When
Monthly storage (per unit)	—	$0.09	Applies in some cases
Low-inventory-level fee	—	$0.32	Applies in some cases

What You Keep

The flat component is what makes small sales expensive. The same fee schedule costs a very different effective rate depending on the order size:

Sale	Fees	You receive	Effective rate
$5.00	$3.97	$1.03	79.40%
$20.00	$6.22	$13.78	31.10%
$50.00	$10.72	$39.28	21.44%
$100.00	$18.22	$81.78	18.22%
$500.00	$78.22	$421.78	15.64%

The Three Fees

Amazon FBA charges a referral fee on the sale, a fulfilment fee per unit, and storage while the unit sits in the warehouse.

Category	Referral fee
Most categories	15%
Consumer electronics	8%
Computers	8%
Books	15%
Jewellery	20% on the first $250
Amazon Device Accessories	45%

Fulfilment scales with size and weight tier:

Size tier	Weight	Fee
Small standard	≤ 6 oz	$3.22
Large standard	≤ 12 oz	$3.86
Large standard	≤ 1.5 lb	$4.75
Large bulky	≤ 50 lb	$9.73+

The Fees That Kill Margin

• Monthly storage — $0.87/cubic foot Jan–Sep, $2.40 Oct–Dec. Q4 storage costs nearly

three times as much, so overstocking in September is expensive.

• Aged inventory surcharge — starts at 181 days and escalates sharply.
• Low-inventory-level fee — charged when your cover is under 28 days, which punishes

running lean.

• Returns processing — free-return categories charge you when a unit comes back.

Rule of Thumb

Sell price should be at least three times your landed cost of goods for FBA to work. Below that, referral plus fulfilment plus storage leaves nothing for advertising — and advertising is not optional on Amazon.

Charging to Hit a Target Payout

Adding 15.00% to your price under-recovers, because the percentage then applies to the larger amount as well. The correct gross-up divides:

`` charge = (target + flat fees) ÷ (1 − percentage rate) ``

To receive	Charge
$100.00	$121.44
$1,000.00	$1,180.26

Reducing What You Pay

• Raise average order value. The flat fee is fixed, so bundling two $20.00 orders

into one $40.00 order saves the second flat charge outright.

• Watch the optional surcharges. International and currency-conversion fees stack on top

of the base rate and are easy to miss when you price for a domestic market.

• Negotiate at volume. Most processors will discuss custom rates once you are processing

meaningful monthly volume; the published rate is a starting point, not a law.

• Do not migrate for 0.2%. The engineering and support cost of changing platforms

usually exceeds a small rate difference for years.

Referral fees run 8–15% by category; fulfilment scales with size and weight tier.