How to Reduce Aged Inventory Holding Costs: 2026 Guide
TL;DR
Inventory holding costs typically consume 20–30% of your total inventory value annually, and Amazon’s Aged Inventory Surcharge makes the problem worse once stock sits longer than 180 days. The most effective way to reduce aged inventory holding costs is to prevent the problem (ship only 60–90 days of supply to FBA), act early with PPC and price cuts before day 150, and remove or liquidate anything unlikely to sell before surcharges kick in. A new 15-month fee tier for 2026 makes holding dead stock more expensive than ever.
What Are Inventory Holding Costs?
Inventory holding costs (also called carrying costs) represent the total expense of storing unsold goods in a warehouse until they sell or get removed. This isn’t just rent. It includes capital costs, warehousing expenses, insurance, labor, shrinkage, depreciation, and the opportunity cost of money sitting in products that aren’t moving.
The standard formula is straightforward:
Inventory Holding Cost = Average Inventory Value × Holding Cost Percentage
Most businesses see holding costs land between 20% and 30% of total inventory value annually. That number climbs the longer products sit unsold.
Here’s how the costs break down into four categories:
- Capital costs: The money tied up in inventory that could be funding ads, product launches, or restocking fast sellers.
- Storage and warehousing: Rent, utilities, warehouse labor, equipment.
- Service costs: Insurance premiums, taxes on stored goods, inventory management software.
- Risk costs: Shrinkage, damage, obsolescence, and depreciation as products lose market relevance.
The biggest hidden cost is opportunity cost. Every dollar locked in dead stock is a dollar that can’t fund your next product launch, cover advertising on a winning SKU, or improve your cash conversion cycle. When sellers focus only on the visible warehouse fees, they underestimate the true cost of aged inventory by a wide margin.
Understanding why ROAS can look good while profit is actually negative requires accounting for these hidden carrying costs.
What Is Aged Inventory on Amazon?
Amazon’s Aged Inventory Surcharge (formerly called Long-Term Storage Fees) is an extra monthly fee charged on top of regular storage fees for any FBA inventory stored longer than 180 days. Amazon assesses these fees based on an inventory snapshot taken on the 15th of each month, with charges appearing between the 18th and 22nd.
Fee Tiers and Thresholds
The surcharge structure escalates the longer inventory sits:
| Age Bracket | Surcharge (per cubic foot) |
|---|---|
| 181–210 days | $1.50 |
| 211–240 days | $3.80 |
| 241–270 days | $5.45 |
| 271–300 days | $5.45 |
| 301–330 days | $5.70 |
| 331–365 days | $5.90 |
| 365+ days | $6.90 or $0.15/unit (whichever is greater) |
| 15+ months (new for 2026) | $7.90 or $0.35/unit (whichever is greater) |
These surcharges stack on top of your regular monthly storage fees, which run $0.78 per cubic foot from January through September and $2.40 per cubic foot during Q4 peak season.
The FIFO Calculation Method
One of the most misunderstood aspects of Amazon’s aged inventory system: Amazon calculates inventory age using a first-in, first-out (FIFO) method across the entire fulfillment network. When units sell or get removed, Amazon deducts them from your oldest inventory first, regardless of which physical unit actually shipped.
This matters more than most sellers realize. If you send in 500 units of a product, sell 300, then send in 200 more, those 200 newest units don’t carry their own separate age clock. The 200 remaining from the original shipment are still aging, and sales reduce the oldest bucket first. Understanding FIFO can change your removal and restocking decisions completely.
2026 Fee Changes Worth Knowing
Several updates make reducing aged inventory holding costs more urgent this year:
- A new 15-month tier adds $0.35 per unit or $7.90 per cubic foot, whichever is greater.
- Removal and disposal fees for lightweight items decrease by $0.20, encouraging sellers to remove stock rather than let it age.
- Amazon is adding a 3.5% fuel and logistics surcharge to all US FBA fees starting April 17, 2026.
The message is clear: Amazon wants sellers running leaner operations, and they’re pricing dead stock accordingly.
For a deeper walkthrough of surcharge mechanics and mitigation tactics, see our guide on managing aged inventory and reducing long-term storage fees.
The Real Cost of Aged Inventory (Beyond Storage Fees)
The visible surcharges are bad enough. The invisible costs are worse.
Fee Stacking in Practice
Regular monthly storage fees, aged inventory surcharges, and the storage utilization surcharge (triggered when you hold more than 26 weeks of supply) all compound simultaneously. One seller on the Amazon Seller Central forums reported that their $8-cost product had racked up “$18.09 in Aged Inventory Surcharge and $20.23 in storage costs per unit”, meaning surcharges exceeded the product’s own cost multiple times over.
Let’s look at another real example: a blender measuring 1.25 cubic feet that hits the 271–300 day bracket. That’s $5.70 per cubic foot, or roughly $7.13 per unit per month in surcharges alone. With 80 units, you’re paying about $420 every month in aged inventory fees before you sell a single unit. Three months of that adds up to $1,260, likely more than the wholesale cost of the entire batch.
IPI Score Damage
Amazon’s Inventory Performance Index (IPI) uses a minimum threshold of 400, down from 450 in previous years. The score measures four things: excess inventory percentage, sell-through rate, stranded inventory percentage, and in-stock rate for replenishable SKUs.
Aged inventory directly inflates your excess inventory percentage, which drags IPI down. Drop below 400 and Amazon restricts your storage capacity, meaning you can’t send in new stock for products that actually sell well.
Practitioners on forums consistently report a frustration that most articles ignore: sellers who ordered fresh inventory for winning products but can’t ship it in because aged inventory from slow SKUs is consuming their allotted capacity. This is a downstream cost that doesn’t show up on any invoice.
Most experienced operators target an IPI of 550–600+ because that range provides enough buffer to absorb seasonal swings, launch new products, and scale without triggering restrictions.
The Cascading Effect: From Aged Stock to Lost Rankings
Here’s the cost chain that no fee calculator captures:
- Aged inventory drags down IPI.
- Low IPI restricts FBA storage capacity.
- Restricted capacity causes stockouts on high-velocity products.
- Stockouts destroy Best Sellers Rank and organic keyword rankings.
- Recovering lost rankings requires incremental ad spend at higher CPCs.
As one agency put it, the correct frame is the cost of reduced FBA storage capacity on your entire catalog, not the margin on the removal itself. Holding onto 200 units of a slow seller to avoid a $150 removal loss while your top product goes out of stock is a terrible trade.
Capital Lock-Up
Every dollar sitting in dead inventory is a dollar not working elsewhere. For a brand spending $20,000 on a product that’s now aging in FBA, that’s $20,000 that could have funded advertising on proven winners, a new product launch, or additional inventory for SKUs with a sell-through rate above 3.0.
How to Reduce Aged Inventory Holding Costs: A Prioritized Action Plan
Most articles on this topic give you a list of tactics in no particular order. That’s not helpful when you’re staring at an Inventory Health report and need to know what to do first. Here’s a decision framework organized by urgency.
Prevention (Before 90 Days)
The cheapest aged inventory problem is the one you never create.
Ship only 60–90 days of supply to FBA. As one practitioner agency advises, if your breakeven window is 90 days, don’t send in six months’ worth of stock. Test smaller batches and scale based on sell-through. SoStocked’s team puts it simply: anything older than 90 days is considered “overstock”.
Stage bulk inventory at AWD or a 3PL. Amazon Warehousing and Distribution (AWD) or a third-party logistics provider can hold your overflow stock at a fraction of FBA’s cost. You replenish FBA in smaller, more frequent shipments rather than flooding the fulfillment centers with six months of product.
Set automated alerts at 90 and 150 days. Don’t wait until you see surcharges on your billing statement. Build alerts in Seller Central or your inventory management tool so slow movers get flagged while there’s still time to act.
Review Inventory Health weekly, not monthly. A monthly check means you might discover a problem at day 175 with only five days to react. For guidance on building a restock cadence that prevents overstock, read about inventory depth planning and restock schedules for peak sales.
Early Action (90–150 Days)
Stock isn’t aged yet, but it’s trending in the wrong direction. This is where you have the most options and the lowest cost.
Run targeted PPC with coupons on slow SKUs. SmartScout’s team has observed that if you have stale inventory, you probably have a traffic problem. Let Amazon find a cheap click and let the coupon do the rest of the work. ACOS below 5% has been observed on these types of campaigns. Even a small advertising push combined with a visible coupon badge can restart sales velocity. For more on structuring profitable Amazon ad campaigns, see these Amazon advertising profit tips.
Optimize listings. Before blaming the product, check whether the listing is doing its job. Weak titles, poor images, or thin A+ content will tank conversion rates on any SKU. Sometimes the product is fine; the listing just isn’t competitive.
Create bundles. Pair an aging product with a faster-selling complementary item. This increases perceived value, raises the average order value, and moves the slow SKU without a steep discount.
Test incremental price reductions. Cut price by 5% every two weeks. Track sell-through after each cut. You’ll find the price point where velocity picks up without giving away margin unnecessarily.
Urgent Action (150–180 Days)
You’re now days away from surcharges. Speed matters more than optimization.
Submit removal orders before the 14th of the month. Amazon takes inventory snapshots on the 15th. Removal orders submitted after the cutoff won’t process in time, and you’ll be charged for that month. The deadline is 11:59 PM PT on the 14th.
Create Amazon Outlet deals. These require a minimum 20% discount, but they put your product in front of bargain-hunting shoppers. Outlet deals move volume faster than a standard price reduction because they get dedicated placement.
Consider the FBA Liquidations program. You’ll typically recover only 5–10% of your product’s retail value. That sounds terrible in isolation, but compare it to paying $5+ per cubic foot in surcharges every month for the next three to six months while the product still doesn’t sell. The single best way to recover value is to sell the inventory on Amazon, and it is 5–10x better to sell it than to dispose or remove to a liquidator. But when sell-through tactics have failed, liquidation beats paying escalating surcharges.
Damage Control (181+ Days)
Surcharges are already hitting. Minimize the bleeding.
Switch remaining units to FBM fulfillment. Remove units from FBA and fulfill orders from your own warehouse or 3PL. You lose the Prime badge, but you stop the surcharge clock.
Use multi-channel fulfillment. If you sell on Shopify, Walmart, or other marketplaces, route your aging FBA stock through those channels via Amazon’s MCF program. This gives the inventory exposure to different customer bases.
Dispose of truly dead stock. If you’ve tried PPC, price cuts, Outlet deals, and multi-channel fulfillment and the product still won’t move, dispose of it. Paying escalating monthly surcharges on inventory that has zero chance of selling is just burning money. The reduced removal fees for lightweight items in 2026 make this decision slightly less painful.
Systemic Practices (Ongoing)
These ongoing habits prevent aged inventory from becoming a recurring problem.
Improve demand forecasting. Use historical sales data, seasonality patterns, and sell-through rate trends to calibrate how much stock you actually need. Target a sell-through rate of 3.0 or higher.
Maintain IPI above 550. Don’t just clear the 400 minimum. A higher IPI gives you a buffer against seasonal fluctuations and capacity restrictions. Learn more about setting restock levels to prevent lost sales.
Establish a weekly inventory review cadence. Monday: review Inventory Health report and age brackets. Tuesday: submit replenishment orders or removal orders based on what you found. This rhythm catches problems early.
Audit FBA fees monthly. Amazon’s billing isn’t always accurate. Discrepancies in storage fees, surcharges, and removal charges happen more often than you’d think. A monthly FBA fee audit can recover real money.
Holding Costs Beyond Amazon: D2C and 3PL
Everything above focuses on Amazon FBA because that’s where most sellers feel the pain of aged inventory surcharges. But holding costs apply across every sales channel.
If you sell through Shopify or WooCommerce with a 3PL handling fulfillment, you won’t face Amazon-style tiered surcharges. However, carrying costs still run 20–30% of inventory value annually. The components are the same: warehouse rent, insurance, labor, shrinkage, and the ever-present opportunity cost.
The principles for reducing aged inventory holding costs in a D2C context mirror the Amazon playbook:
- Smaller, more frequent orders over bulk purchasing. Just-in-time inventory management reduces the average time products sit in a warehouse.
- Inventory sync across channels prevents siloed overstock. If Amazon has excess inventory of a product that’s selling well on your Shopify store, cross-channel visibility lets you redirect it.
- Regular sell-through analysis by SKU, regardless of platform, catches slow movers before they become dead weight.
For brands selling across both Amazon and D2C channels, EZCommerce’s D2C growth services include inventory and 3PL coordination to help unify these operations.
Key Terms at a Glance
| Term | Definition |
|---|---|
| Aged Inventory Surcharge (AIS) | Amazon’s monthly fee on FBA stock stored 181+ days, assessed on the 15th of each month |
| Holding Cost / Carrying Cost | Total expense of storing unsold inventory, typically 20–30% of inventory value per year |
| IPI Score | Amazon’s Inventory Performance Index (0–1,000); minimum 400 to avoid storage capacity restrictions |
| Sell-Through Rate | Units sold and shipped over the past 90 days divided by average inventory on hand; target 3.0+ |
| FIFO | First-In, First-Out; the accounting method Amazon uses to determine which units are “oldest” for fee purposes |
| Storage Utilization Surcharge | An additional fee triggered when you hold more than 26 weeks of supply in FBA |
| AWD | Amazon Warehousing and Distribution; a lower-cost staging area for bulk inventory before it enters FBA |
| FBA Liquidations | Amazon’s program to sell excess inventory to liquidation partners at ~5–10% of retail value |
Building a Lean Inventory Operation
The sellers who consistently avoid aged inventory problems aren’t just running better ads. They’re running leaner businesses. That means smaller initial shipments, faster response to sell-through signals, and a willingness to take small losses on slow stock early rather than catastrophic losses later.
If your brand is dealing with aged inventory across multiple SKUs, the problem is usually systemic rather than product-specific. It points to gaps in demand forecasting, restock planning, or the cadence of inventory reviews.
EZCommerce’s Amazon management services include inventory depth planning, FBA fee audits, and aged inventory alerts as part of the operational foundation, not as add-ons. For brands that want a clear picture of where their inventory health stands today, request a free brand audit to identify aged inventory exposure and build a 90-day action plan.
FAQ
How much does it cost to hold aged inventory on Amazon?
Regular monthly storage runs $0.78 per cubic foot (January–September) and $2.40 per cubic foot (October–December). Once stock hits 181 days, aged inventory surcharges start at $1.50 per cubic foot and escalate to $6.90 per cubic foot (or $0.15/unit) at 365+ days. The new 2026 tier adds $7.90 per cubic foot (or $0.35/unit) at 15 months. These fees stack, so a single product can cost more in storage and surcharges than the product itself is worth.
When does Amazon start charging the Aged Inventory Surcharge?
The surcharge kicks in at 181 days of storage. Amazon takes an inventory snapshot on the 15th of each month and charges based on the age of your oldest units using FIFO accounting. If you want to avoid a surcharge for a given month, removal orders must be submitted before 11:59 PM PT on the 14th.
What is a good IPI score to avoid aged inventory problems?
Amazon’s minimum IPI threshold is currently 400. Drop below that and you face storage capacity restrictions. However, most experienced sellers target 550–600+ because that buffer absorbs seasonal swings and gives room to scale without triggering limits. Aged inventory directly hurts IPI by increasing your excess inventory percentage.
Should I liquidate aged inventory or pay the storage fees?
In almost all cases, selling or liquidating is better than holding. Even Amazon’s liquidation program (which returns roughly 5–10% of retail value) is often the better financial choice compared to paying $5+ per cubic foot in monthly surcharges for inventory that isn’t selling. The correct comparison isn’t the loss on the liquidated units. It’s the cost of reduced storage capacity across your entire catalog.
How does Amazon calculate inventory age?
Amazon uses the FIFO (First-In, First-Out) method across its entire fulfillment network. Sales and removals are deducted from the oldest inventory first, regardless of which physical unit was shipped. This means new shipments of the same ASIN don’t reset the age clock on older units already in FBA.
How much inventory should I send to FBA at once?
Best practice is 60–90 days of supply based on current sell-through velocity. Stage any additional stock at Amazon Warehousing and Distribution (AWD) or a 3PL, then replenish FBA in smaller, more frequent shipments. Sending six months of stock in one bulk shipment is one of the most common causes of aged inventory surcharges.
Do holding costs matter if I sell D2C through a 3PL instead of Amazon?
Yes. While 3PLs don’t charge Amazon-style tiered surcharges, carrying costs still average 20–30% of inventory value per year across warehousing, insurance, labor, and opportunity cost. The same principles apply: ship less, review sell-through regularly, and clear slow movers before they eat into your margins.
What’s the difference between the Aged Inventory Surcharge and regular storage fees?
Regular monthly storage fees apply to all FBA inventory from day one. The Aged Inventory Surcharge is an additional fee that starts layering on after 181 days. Both are charged simultaneously, which is why total storage costs can escalate quickly for slow-moving products.