Knowledge— min readUpdated Jul 16, 2026

What Is a Long-Term Storage Fee? Amazon FBA vs. Standard 3PL

Director of Implementation, Fulfyld

Brett McCleary is Director of Implementation at Fulfyld, where he leads client onboarding and the integrations that connect brands' stores, marketplaces, and systems to Fulfyld's fulfillment operation.

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Published Jun 9, 2026

Updated Jul 16, 2026

Quick answer: A long-term storage fee is a charge applied to inventory that has remained in a fulfillment warehouse beyond a set storage period, typically 365 days. It exists to discourage sellers from using warehouse space as indefinite cheap storage and to keep fulfillment centers optimized for active inventory.

How Long-Term Storage Fees Work

A clean warehouse scene showing neatly organized pallets and labeled inventory racks, with a manager reviewing storage report

The fee is calculated based on the volume or unit count of inventory that has been sitting in storage past the threshold date. Most fulfillment networks assess these charges on a monthly or semi-annual basis, and the older the inventory, the higher the per-unit or per-cubic-foot rate applied.

The key variables that determine what you’ll pay are:

How long the inventory has been in storage
The size or volume of the items
The fulfillment network’s specific fee structure and assessment dates

The Difference Between Storage fees and Long-term Storage Fees

It’s worth distinguishing long-term storage fees from standard monthly storage fees. Regular storage fees apply to all inventory from day one and are simply the cost of occupying warehouse space. Long-term storage fees are a penalty layer on top of that, charged specifically because the inventory has aged past the acceptable threshold. On Amazon FBA, both fees run simultaneously once the 365-day mark is crossed, which is why aging inventory on that platform compounds in cost faster than most sellers expect.

Amazon FBA vs. Standard 3PL: Key Differences

The way long-term storage fees are structured differs significantly depending on where you store your inventory.

Amazon FBA charges long-term storage fees on any units that have been in fulfillment centers for more than 365 days. These fees are assessed monthly and are charged per cubic foot or per unit, whichever is greater. Amazon’s fees are non-negotiable, fixed by policy, and enforced automatically. Sellers have no flexibility in how or when they’re charged.

Standard 3PLs, like Fulfyld, handle long-term storage differently. Fee structures are typically defined in your contract, giving you more transparency and predictability from the start. Unlike Amazon, a 3PL provider can work with you to address aging inventory before fees escalate, whether through promotional liquidation support, repackaging, or SKU consolidation.

When Do Long-Term Storage Fees Become a Problem?

Long-term storage fees become a real cost issue when inventory forecasting is off: overordering for a season, slower-than-expected sell-through, or launching a product that underperforms.

For sellers using Amazon FBA, the fees stack quickly and leave little room to react. For sellers working with a flexible ecommerce fulfillment partner, there’s usually more time to course-correct before costs compound.

Frequently Asked Questions

How do I know how long my inventory has actually been sitting?

On Amazon, the Inventory Age report in Seller Central buckets your units by days in the network, so you can see what's approaching a surcharge tier before it hits. At a 3PL, ask for a lot-level aging report showing receipt dates by batch—most providers can produce one, but plenty won't surface it unless you request it. Either way the clock runs per unit from the date it was received, not from when the SKU was first stocked.

Should I liquidate, remove it, or just pay the fee?

Run the three-way math per SKU rather than applying one rule to the whole aging pile: removal costs a per-unit fee plus return freight, liquidation costs you margin on every discounted unit, and doing nothing costs the fee for however many months you'd hold it. The deciding variable is realistic sell-through—if a SKU moves in 90 days, eating the fee usually beats discounting it; if it hasn't moved in a year, the fee is just a subscription to a mistake. Watch out for platform liquidation programs, which recover cents on the dollar and are often worse than a well-run promotion to your own list.

Why am I getting charged on inventory that's actively selling?

Because aging is tracked per unit, not per SKU. If you over-ordered at some point, those original units can still be sitting untouched while newer receipts get picked and shipped past them—the SKU looks healthy in your sell-through report while a stranded pocket of old stock quietly crosses the threshold. Ask your 3PL to rotate the oldest units to the front of the pick path, and on FBA check the age buckets rather than the total on-hand count.

Can I move inventory out of FBA to a 3PL to escape these fees?

Yes—submit a removal order in Seller Central with your 3PL's warehouse as the ship-to address, then sell those units through FBM or send them back into FBA in smaller, planned batches. Budget for the per-unit removal fee plus inbound freight, and time the request ahead of the next assessment date so you're not paying one more round on the way out. This works best when the underlying issue is over-ordering rather than weak demand; moving slow stock to a cheaper shelf lowers the carrying cost but doesn't fix the sell-through.