Amazon FBA
What Is the FBA Fee Stack?
The Fulfillment by Amazon (FBA) fee stack is the full set of fees Amazon charges FBA sellers, and it typically totals 30 to 50 percent of revenue across eight layers, not just the headline pick-pack-ship rate. The layers include the referral fee (8 to 17 percent), pick-pack-ship (3.22 to 13 dollars per unit), storage, long-term storage penalties, inbound placement, low-inventory, return processing, and removal fees. Computing FBA cost from pick-pack-ship alone overstates SKU contribution margin by 8 to 18 percentage points.
The Fulfillment by Amazon (FBA) fee stack is the full set of fees Amazon charges sellers using FBA. The headline pick-pack-ship rate is only one layer. The full stack typically totals 30 to 50 percent of revenue, and it's where most FBA sellers quietly under-allocate cost and overstate margin.
The eight layers
- Referral fee: 8 to 17 percent of revenue, depending on category
- FBA pick-pack-ship: $3.22 to $13 per unit by size tier
- Monthly storage fees: $0.83 per cubic foot off-peak, $2.40 per cubic foot peak (October to December)
- Long-term storage penalty: units sitting more than 271 days add $6.90 per cubic foot per month
- Inbound placement service fee: March 2024 addition, roughly $0.21 to $1.50 per unit if shipping to a single warehouse
- Low-inventory level fee: 2024 addition for sellers running close to stockout
- Return processing fee: most categories now charge per-return processing
- Removal and disposal fees: when you pull or dispose of inventory
A worked example: typical full-stack cost
A $40 apparel SKU on FBA: $5.20 referral (13 percent) + $4.65 pick-pack-ship + $0.85 storage allocation + $0.32 inbound placement + $0.40 return reserve = $11.42 in FBA fees alone. That's 28.6 percent of revenue, and it excludes Cost of Goods Sold (COGS), ad spend, and working-capital cost. See Amazon FBA Profit Analysis for the full SKU ledger build.
The most common mistake
Computing FBA "cost" using pick-pack-ship only. The other 7 layers are real, recurring, and unit-allocable. Skipping them overstates SKU contribution margin by 8 to 18 percentage points, which produces inventory-commitment decisions that look right in the model and are wrong in reality.
Frequently Asked Questions
what's actually in the full fba fee stack?
Eight layers: referral, pick-pack-ship, storage (monthly and long-term), inbound placement, low-inventory level, return processing, removal, and disposal. Stacked, that's 30 to 50 percent of revenue.
why is fba fee tracking such a mess?
Seller Central scatters fees across 4 to 6 different reports, so most sellers see only the obvious ones and miss the rest. Reconstructing real per-SKU FBA cost takes manual work.
have fba fees changed a lot recently?
Yes. Amazon added the inbound placement service fee (March 2024), introduced the low-inventory level fee (2024), and has raised fees 5 to 8 percent annually. SKU economics that worked in 2022 often don't today.
Related Terms
Browse the full ecommerce finance glossary for every metric and money term a DTC operator needs.
Want a CFO to build your real per-SKU FBA cost ledger? Talk to a CFO.