How to Avoid Amazon FBA Long-Term Storage Fees (2026 Aged Inventory Surcharge Guide)

By Greg Purdy

Amazon FBA long-term storage fees used to be a twice-a-year problem. Every February and August, Amazon ran an inventory cleanup, checked what had been sitting in a fulfillment center for more than six months, and charged accordingly. That system is gone. Since 2024, Amazon has renamed the fee the aged inventory surcharge, moved the assessment to every single month, and lowered the age at which it starts biting — 181 days, not six months, and definitely not something you can check twice a year and forget about in between. If you’re still running your inventory reviews on the old February/August calendar, you’re already behind, and Amazon just raised the rates again on January 16, 2026.

This guide covers exactly how the current fee structure works, how it stacks with the separate storage utilization surcharge, what it actually costs in dollars as inventory ages, and the five real options for getting ahead of it before your slow movers turn into a five-figure line item on your monthly statement.

The mechanics that used to define this fee are gone. Here’s what replaced them, confirmed directly from Amazon Seller Central’s own documentation.

Old system (pre-2024): Amazon assessed long-term storage fees twice a year, on inventory cleanup dates of February 15 and August 15. Units in a fulfillment center for more than six months (or twelve months, at a steeper rate) were charged a flat per-cubic-foot fee on those two dates only.

Current system (2026): The fee — officially renamed the aged inventory surcharge — is assessed monthly, using an inventory snapshot taken on the 15th of every month, with the charge posting between the 18th and 22nd, per Amazon Seller Central. It starts at 181 days in a fulfillment center, not six months flat, and it climbs through seven separate age tiers rather than two. Amazon calculates inventory age on a first-in, first-out basis across its entire network — a unit that ships recently is still deducted from the oldest stock on hand, not the specific unit that physically moved.

Then, effective January 16, 2026, Amazon updated the top end of the scale again: the old “366 days or more” tier split into two tiers (366–455 days and 456+ days), and the per-unit minimum on the top tier rose to $0.35, per Amazon Seller Central. If your mental model of this fee is still “check twice a year, worst case $6.90 a cubic foot,” that model is roughly two years and several rate hikes out of date.

The aged inventory surcharge is calculated two ways — a per-cubic-foot rate and a per-unit rate — and Amazon charges whichever is higher. Cubic feet are calculated as length × width × height in inches, divided by 1,728. Here are the current tiers, effective January 16, 2026:

*The 181–270 day tiers exclude clothing, shoes, bags, jewelry, and watches. Source: Amazon Seller Central — Aged inventory surcharge.

This surcharge rate table does not change by season — the tiers above apply identically in March and in November. What does change seasonally is the separate base monthly storage fee sitting underneath it, and that’s where sellers get caught.

Sellers often lump every FBA storage cost into “long-term storage fees,” but Amazon actually runs two separate, stackable charges, and mixing them up leads to bad decisions. The aged inventory surcharge (above) is about how long an individual unit has physically sat. The storage utilization surcharge is a completely different mechanic — it’s about your account’s overall stock-to-sales ratio, not any one unit’s age.

Per Amazon Seller Central, the storage utilization surcharge applies only if you meet all four conditions:

• You have a Professional selling account.
• Your first shipment to a US fulfillment center was more than 365 days ago.
• Your average daily inventory volume for a product size tier is at or above 25 cubic feet.
• Your storage utilization ratio for that size tier is above 22 weeks.

If all four apply, the surcharge is added to your base monthly storage fee on all inventory in that size tier aged above 30 days — a much lower bar than the 181-day trigger on the aged inventory surcharge. Here’s the full rate table, non-dangerous goods, January through September:

Source: Amazon Seller Central — Monthly inventory storage fees. New sellers, Individual account sellers, and anyone at or below 25 cubic feet of daily volume are exempt and pay only the base rate.

Here’s the compounding risk most sellers miss. The aged inventory surcharge tiers above are flat year-round. But the base monthly storage fee underneath them is not — it roughly triples during Q4. Per Amazon Seller Central:

Since the aged inventory surcharge is explicitly charged in addition to the base monthly storage fee — not instead of it — any unit that’s both aged into a surcharge tier and physically in a fulfillment center between October and December pays the peak base rate and the full age-tier surcharge simultaneously. A standard-size unit that crossed into the 271–300 day tier in July was paying $0.78 (base) + $5.45 (surcharge) per cubic foot that month. The same unit still sitting there in November pays $2.40 (base) + $5.45 (surcharge) — a jump of over 20% on top of an already steep surcharge, for the exact same age tier.

This is the real seller-impact math: inventory that ages into the top surcharge tiers during Q4 is the single most expensive inventory a seller can hold. If you shipped inventory into FBA early in the year expecting a slow sell-through, the clock working against you isn’t just the surcharge ladder — it’s the surcharge ladder colliding with peak-season storage pricing at the worst possible time.

Tier labels don’t communicate urgency the way dollar figures do. Take a mid-size standard product — 11″ × 8″ × 2″ (0.102 cubic feet) — and track what 20 units cost to store, month over month, if nothing is done:

Source: worked examples in Amazon Seller Central’s aged inventory surcharge documentation. That’s the surcharge alone — before adding the base monthly storage fee that’s charged on top every month regardless of age, and before any storage utilization surcharge if the account qualifies. Stretch this across a pallet instead of 20 units, or a SKU that’s oversized rather than standard, and the monthly bill on dead stock can exceed what the inventory is even worth to liquidate. The math only gets worse the longer the decision gets deferred — which is exactly why Amazon designs the tiers to escalate rather than stay flat.

The old two-report system — Recommended Removals and Inventory Health — has been restructured. Here’s where to actually look in 2026:

FBA Inventory tool (Inventory → FBA Inventory). This is the primary dashboard now. It shows inventory age bands, estimated aged inventory surcharge amounts for units approaching each tier, and a recommended action column per ASIN. Amazon explicitly recommends checking this to identify ASINs currently subject to, or projected to become subject to, the aged inventory surcharge within the next 60 days, per Amazon Seller Central.

Aged Inventory Surcharge report. A dedicated downloadable report showing estimated surcharge amounts by age band and ASIN, useful for exporting and sorting outside Seller Central.

Recommended Removal report. Still exists (Reports → Fulfillment → Recommended Removals), and still auto-calculates, ASIN by ASIN, how many units you’d need to remove — assuming no further sales — to avoid the next assessment. It only surfaces items within the six weeks before each cleanup date, so it’s a short-fuse tool, not a long-range planning one.

FBA Inventory Age & Excess Analytics. A newer analytics view (Inventory → Analytics, or directly at the FBA seller analytics inventory-age-excess page) for trend-watching across time, better for spotting a SKU’s age creeping up before it becomes urgent.

Once a SKU shows up on any of the reports above, there are five real paths — and the right one depends on margin, sell-through probability, and how close the unit already is to the next surcharge tier.

Amazon’s own first recommendation. Setting up a deal through Amazon Outlet lets you discount aging inventory to move it before the next cleanup date, without a removal order or shipping cost at all, per Amazon Seller Central. Best for inventory with real remaining margin and reasonable sell-through odds at a lower price.

Removal fees are no longer flat. As of the January 15, 2026 update, they’re weight-tiered and billed per unit, ranging from $0.84 for standard-size items under 0.5 lb up to $14.32+ for large bulky items over 10 lb, per Amazon Seller Central. As of March 1, 2026, these fees post per unit as each item actually ships, rather than as one lump charge for the whole order, so a large removal can generate many smaller charges spread across weeks — see our guide to the FBA returns report for the same per-unit billing mechanic on the returns side.

Amazon destroys the inventory instead of shipping it back. Disposal fees use the same size-and-weight-tiered schedule as removal fees. Best when the inventory has no resale value or the cost to reclaim it exceeds anything it could recover.

Primarily built for returned or customer-damaged inventory rather than simple aging stock, but worth checking Automated Unfulfillable Settings if a SKU also has a returns problem — Amazon’s own published example shows 35–52% net recovery through this path, notably higher than typical liquidation recovery. Full mechanics are in our FBA returns report guide.

Amazon auctions the inventory through its liquidation program. Amazon applies a 15% liquidations referral fee on the gross recovery value plus a size-and-weight-based liquidation processing fee, both unchanged in the 2026 update, per Amazon Seller Central. This is generally the lowest-recovery option, best reserved for stock with no accessible resale channel and no remaining margin to protect.

If your inventory review calendar still has February 15 and August 15 circled, replace it with this monthly cycle. Every month has its own 14th-of-the-month cutoff and its own 15th-of-the-month snapshot — there is no off-season for this fee, only a more expensive one during Q4.

1. Pull the FBA Inventory tool or Aged Inventory Surcharge report in the first few days of the month.
2. Flag every SKU at 150+ days — this gives 30 days of runway before the 181-day trigger.
3. Check margin and sell-through probability for each flagged SKU to choose between Amazon Outlet, removal, disposal, Grade and Resell, or liquidation.
4. Submit removal or disposal orders before the 14th for anything not resolved by pricing or Outlet placement.
5. Factor in the calendar — a SKU aging into a surcharge tier in September behaves very differently, cost-wise, than the same SKU aging into that tier in November, once the Q4 base storage rate kicks in.
6. Reconcile the actual charge against Payments → Transaction View once it posts between the 18th and 22nd, to confirm your removals actually cleared before the snapshot.

If FBA storage costs are becoming a recurring drag regardless of how well you manage aging, it’s worth stepping back and comparing whether some of that inventory belongs upstream in AWD or a 3PL reserve warehouse instead of sitting in a fulfillment center accumulating surcharge exposure in the first place — and if removal-to-self is the right call for a given SKU, Amazon FBA prep service fees and the prep center directory cover where that inventory can land. Whatever path you take, the goal is the same one Amazon had when it moved this fee to a monthly cadence: nothing should sit in a fulfillment center long enough to become someone else’s profit margin.