Amazon Long-Term Storage Fees: How to Avoid Them and Manage Aged Inventory

Amazon charges long-term storage fees (LTSF) monthly on the 15th of each month on inventory that has been in a fulfillment center for more than 180 days. The fee structure is tiered by age: units aged 181–270 days are assessed at USD 0.50 per unit or USD 6.90 per cubic foot (whichever is greater); units aged 271–365 days at USD 1.00 per unit or USD 6.90 per cubic foot; and units aged over 365 days at USD 1.50 per unit or USD 6.90 per cubic foot per month. For bulky products with large cubic footage, the per-cubic-foot rate often applies and generates far higher charges than the per-unit minimum suggests.

These fees stack on top of standard monthly storage fees (USD 0.87/cubic foot January–September, USD 2.40/cubic foot October–December). A single 2-cubic-foot product aged 300 days incurs both the standard storage fee (USD 1.74–4.80/month) and an LTSF (USD 13.80/month at the per-cubic-foot rate), totaling USD 15–19 per unit per month in holding costs. If that unit retails for USD 30 with a USD 8 margin, a seller is losing money every month they hold it.

LTSF assessment uses the actual date the unit was received at the fulfillment center, not the date you shipped it from Taiwan. This means that slow-clearing customs or inbound shipment delays can age a product before it is ever available for sale. Shipments stuck at port for 3–4 weeks during peak periods effectively cost you a month of aging time before the first customer even sees the listing.

Amazon's Inventory Age report in Seller Central shows you exactly how many units of each ASIN fall into each age bucket (0–90 days, 91–180 days, 181–270 days, 271–365 days, 365+ days). The report is refreshed daily and shows both the current fee being assessed and the projected fee if no action is taken. Reviewing this report weekly — not monthly — is the minimum required to avoid LTSF surprises on your 15th-of-the-month billing statement.

Navigate to Inventory → Inventory Age in Seller Central to access the aging dashboard. The default view shows all ASINs sorted by estimated total storage cost, which puts your highest-cost aged inventory at the top. Switch to the "Units" column to see the raw unit count in each age bucket — a useful view for understanding volume exposure even on lower-cost products. Click any ASIN to see a per-unit breakdown of when specific units entered the fulfillment center network.

The "Recommended Action" column in the Inventory Age report is worth reading carefully. Amazon classifies actions as "Add a deal or promotion," "Improve discoverability," "Liquidate," or "Remove." These recommendations are algorithm-driven based on your sell-through rate vs. the cost of continued storage. If Amazon recommends liquidation for an ASIN that you believe has upcoming demand, override it by running a coupon or Lightning Deal before the next LTSF assessment date.

Download the full Inventory Age report as a CSV for deeper analysis. Import it into a spreadsheet and add a column calculating the LTSF cost per unit at each age tier versus the net margin you earn on a sale. For any ASIN where the monthly LTSF cost exceeds 25% of the net sale margin, you have reached the point where removal or liquidation is financially superior to continued storage — even if you believe the product will eventually sell.

Cross-reference the Inventory Age report with your sales velocity report (Reports → Business Reports → Detail Page Sales and Traffic) to calculate sell-through rate per ASIN. Divide current units on hand by average weekly unit sales to get weeks of supply remaining. Any ASIN with more than 20 weeks of supply AND units entering the 150–180 day age zone needs immediate intervention — a price cut, promotion, or removal order — before it crosses the 180-day LTSF threshold.

Temporary price reductions are the fastest way to accelerate sell-through on aging inventory. A 20–30% price cut on a product approaching 150 days will boost its BSR (Best Seller Rank), improve organic search placement, and reduce inventory age faster than any other single action. Pair the price cut with a 10–15% coupon badge in Seller Central — the orange coupon badge increases click-through rate by 15–25% in most product categories even for buyers who don't use the coupon.

Amazon Lightning Deals and 7-Day Deals are powerful for large-volume clearance. Lightning Deals run for 4–12 hours and can move 50–300 units depending on your product's market size and the discount depth (minimum 15% off your 30-day reference price). Submit Lightning Deal requests at least 2 weeks before an LTSF assessment date to ensure the deal runs before the fee is assessed. Amazon charges USD 150–500 to run a Lightning Deal depending on the deal type and promotional period.

Amazon Outlet offers a curated clearance destination for sellers who opt aged inventory into the Outlet program. Products must be overstocked (more than 90 days of supply) and eligible for a discount of at least 20%. Amazon promotes Outlet listings through dedicated marketing emails, website placement, and search filtering — driving traffic that your standard listing wouldn't receive. There is no additional fee to list in Outlet beyond the standard referral fee on each sale.

Multi-channel fulfillment (MCF) through Amazon lets you use your FBA inventory to fulfill orders from other sales channels — your own Shopify store, Etsy, eBay, or B2B customers — without sending the inventory to a separate warehouse. MCF fees per unit run USD 3.00–8.25 for standard-size products, higher than standard FBA but lower than creating a separate 3PL arrangement just to clear aging stock. Using MCF to sell 100 units through your DTC channel clears aged inventory faster without requiring a price cut on Amazon.

If none of the above strategies moves the inventory fast enough, create a removal order in Seller Central before the LTSF assessment date. Amazon charges USD 1.04 per standard unit removed and returns the inventory to a Taiwan address (via your freight forwarder) or a US return address. Products removed in good condition can be relisted on eBay, sold through B2B channels, or held for a future Amazon restock when demand picks up. Removal is always better than paying recurring LTSF while the product continues not to sell.

The most effective LTSF avoidance strategy is never sending excess inventory to FBA in the first place. Use Amazon's Restock Report (Inventory → Restock Inventory) as your baseline forecast, then apply your own judgment based on upcoming promotions, seasonal demand patterns, and competitor activity. The Restock Report uses a 30-day rolling sell-through rate; if you know Q4 demand is 3x normal velocity, manually adjust the recommended restock quantity upward in your shipment plan.

For products in their first 90 days on Amazon, send conservative quantities — enough to supply 60–90 days of demand at your best-case sell-through estimate. First-time launches almost always have actual sell-through below projection because organic rankings take 6–12 weeks to develop and PPC advertising requires 4–8 weeks of data before campaigns are fully optimized. Sending 6 months of inventory to a new launch is the single most common cause of LTSF charges for Taiwan sellers entering the US market.

Establish a product-level inventory policy with three tiers: new products (60–90 days of supply maximum), established products (90–150 days), and seasonal products (stock to peak demand + 30-day buffer). Review each product's tier classification quarterly and adjust based on actual sell-through data. Products that consistently sit in the 90–150 day age zone without selling should be reclassified to 60-day supply caps until sell-through improves.

Connect your supply chain lead time data to your reorder calendar. If your Taiwan factory requires 45 days lead time and freight takes 25 days, your total replenishment cycle is 70 days. Set a reorder trigger at 80 days of supply remaining rather than 70 to maintain a 10-day safety buffer. This discipline prevents both stockouts (which kill rankings) and overstock (which triggers LTSF). Tools like Skubana, Linnworks, and RestockPro automate this calculation across your full catalog.