Amazon FBA Storage Fees 2026: Peak vs Off-Peak Explained
Amazon's standard-size monthly storage fees roughly triple from October through December (oversize climbs about 2.5x). Here's how the peak vs off-peak structure works, what it costs, and why the brands that get hit hardest are the ones who over-ordered in Q3.
Quick Answer
Amazon FBA monthly inventory storage fees are charged per cubic foot and jump sharply in Q4. Off-peak (Jan–Sep): roughly $0.78/cu ft for standard-size and $0.56/cu ft for oversize. Peak (Oct–Dec): roughly $2.40/cu ft standard and $1.40/cu ft oversize — about a 3x increase on standard-size.
On top of monthly storage, Amazon charges an aged-inventory surcharge (formerly long-term storage) on units stored 181+ days, and a low-inventory-level fee when you carry too little. The peak multiplier means every unit of dead stock you hold into Q4 costs ~3x what it did in summer. Forecasting tightly into Q4 is the single biggest storage-fee lever you have. Always confirm current rates in Seller Central — Amazon updates them annually.
How FBA storage fees actually work in 2026
Monthly inventory storage fee (the base charge)
Charged per cubic foot of space your inventory occupies in Amazon's fulfillment centers, billed monthly for the prior month. It's measured on average daily volume, so the more you store and the longer it sits, the more you pay.
The catch: the rate is seasonal. Off-peak runs January through September; peak runs October through December, when warehouse space is scarce and Amazon prices it accordingly.
The peak vs off-peak jump
For standard-size items, storage roughly triples in Q4 — from about $0.78 to $2.40 per cubic foot per month. Oversize roughly doubles-to-triples, from about $0.56 to $1.40. The increase hits in October, before your Q4 sales even start clearing the inventory.
Why it matters: inventory you shipped in for the holidays sits at peak rates the entire time it waits to sell. Over-order by a month of cover and you're paying the peak premium on every excess unit.
Aged-inventory surcharge (the slow killer)
On top of monthly storage, Amazon adds a surcharge on units stored 181+ days that climbs in tiered bands (181–210, 211–240, 241–270, 271–300, 301–330, 331–365, then 365+), charged as the greater of a per-cubic-foot or per-unit rate. It absorbed the old long-term-storage fee, and it stacks on top of the monthly fee.
Why it matters: dead stock doesn't just occupy expensive space, it accrues an escalating penalty. A SKU that misforecast in spring can quietly rack up aged surcharges all the way into the peak-rate window.
Low-inventory-level fee (the other direction)
Amazon also charges a fee when your historical days-of-cover run too thin on standard-size items that keep selling — it bites hardest under ~14 days of supply and eases off toward ~28 days. So you can't simply minimize stock to dodge storage fees; under-shoot and you pay a different penalty (and risk stockouts).
Why it matters: the fee structure punishes both over- and under-ordering. The only way out is forecasting accurately enough to land in the narrow band between them.
Peak vs off-peak at a glance
| Storage fee component | Off-peak (Jan–Sep) | Peak (Oct–Dec) |
|---|---|---|
| Standard-size, per cu ft / month | ~$0.78 | ~$2.40 |
| Oversize, per cu ft / month | ~$0.56 | ~$1.40 |
| Aged-inventory surcharge (181+ days) | Applies year-round | Applies + stacks on peak rate |
| Low-inventory-level fee | Applies year-round | Applies year-round |
Figures reflect Amazon's 2026 US monthly-storage rate card. Amazon updates fee schedules annually and rates vary by size tier — always confirm current numbers in Seller Central → Fulfillment by Amazon → Fee Preview.
How to keep peak storage fees down
The fee structure is fixed — you can't negotiate Amazon's rates. What you control is how much inventory sits at peak rates, and for how long. Three levers:
- Forecast Q4 cover tightly. Aim to land your holiday inventory close to true demand plus a deliberate safety buffer — not a comfortable over-order. Every extra week of cover is peak-rate cost on units that may not sell until January at off-peak velocity.
- Clear aged inventory before October. Run promotions, removals, or liquidation on 181+ day stock in Q3 so it isn't sitting at peak rates plus surcharge through Q4.
- Split inventory across channels. If a SKU also sells on Shopify or Walmart, you don't have to hold all of its cover in FBA at peak rates — balance stock to where it'll actually sell, using a forecast that sees every channel.
What this means for multi-channel brands
If you sell on Amazon plus Shopify and Walmart, FBA storage fees become a placement question, not just a quantity question. Holding a unit in FBA at $2.40/cu ft when it would have sold faster from your 3PL or via Walmart WFS is a pure-cost decision — one most brands make blind because their forecast only sees Amazon.
A forecast that unifies demand across every channel lets you answer the real question: not just "how much should I order," but "how much should sit in FBA at peak rates versus everywhere else." That's where the storage-fee savings actually live.
The honest caveat
Exact FBA fee numbers change every year, and they vary by size tier, weight, and program (FBA vs AWD vs MCF). The dollar figures here are representative of the 2026 structure for illustration — always pull your real numbers from Seller Central's Fee Preview before making ordering decisions. What doesn't change year to year is the shape: storage spikes in Q4, aged stock gets penalized, and forecasting accuracy is the only lever that moves all of it at once.
Frequently asked questions
How much are Amazon FBA storage fees in 2026?
Monthly storage is charged per cubic foot and is seasonal. Off-peak (Jan–Sep) runs roughly $0.78/cu ft for standard-size and $0.56/cu ft for oversize. Peak (Oct–Dec) runs roughly $2.40/cu ft standard and $1.40/cu ft oversize — about a 3x jump on standard-size. Confirm exact current rates in Seller Central, as Amazon updates them annually.
When do Amazon peak storage fees apply?
Peak FBA storage rates apply October through December, when fulfillment-center space is scarce. Off-peak rates apply January through September. The peak increase hits in October — before Q4 sales clear inventory — so holiday stock sits at peak rates the entire time it waits to sell.
Why are Amazon Q4 storage fees so much higher?
Warehouse capacity is constrained in Q4 as every seller ships in holiday inventory. Amazon raises per-cubic-foot storage rates to roughly triple the off-peak level to ration that scarce space. It means over-ordering before Q4 is far more expensive than over-ordering at any other time of year.
What is the FBA aged-inventory surcharge?
It's an extra fee (formerly the long-term storage fee) charged on units stored 181+ days, escalating the longer they sit — steepest past 271 and 365 days. It stacks on top of the monthly storage fee, so dead stock both occupies expensive space and accrues an escalating penalty.
How can I reduce FBA storage fees?
You can't change Amazon's rates, but you control how much inventory sits and for how long: forecast Q4 cover tightly instead of over-ordering, clear 181+ day aged stock before October, and split inventory across channels so you don't hold all cover in FBA at peak rates. Forecasting accuracy is the lever that moves all three.
Should I just hold less inventory to avoid storage fees?
No — Amazon also charges a low-inventory-level fee when your days-of-cover run too thin on items that keep selling (it bites hardest under ~14 days of supply), and thin stock risks stockouts (lost sales plus rank damage). The fee structure punishes both over- and under-ordering. The goal is landing in the band between them, which only accurate forecasting gets you. See the full forecasting process here.