Amazon flags excess inventory as the units it estimates are beyond what your recent and forecast sales pace will sell in the near term, commonly more than roughly 90 days of supply. It surfaces this as estimated excess in the inventory health and manage-excess tools. The exact threshold and estimate are Amazon's, and they can shift, so treat the flag as a directional signal to act on.
Why is excess inventory bad on Amazon?
It costs you on several fronts: excess-inventory percentage is a direct component of your IPI, so it drags the score that controls your capacity; the units accrue monthly storage fees and eventually the aged-inventory surcharge; and the cash tied up in slow-moving stock is cash you cannot use to reorder your winners. Excess is a quiet but compounding drain.
Andrew Erickson is the founder of Inventory Hero. He has spent years working with Amazon FBA sellers on demand forecasting, restock planning, and the cash flow side of running a private-label brand. Inventory Hero exists because every spreadsheet-based inventory system he tried eventually broke — usually right before Q4.
Move it before it ages: run a promotion or price cut to accelerate sell-through, bundle it, or use outlet and liquidation channels. For units that will not sell at a reasonable price, create a removal or disposal order to stop paying storage. Then fix the cause by ordering closer to real demand so the excess does not rebuild.
Liquidating Amazon inventory clears dead stock for a small recovery. Amazon's Liquidations program, third-party options, and when each beats removal.
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Excess inventory on Amazon is stock the system flags as more than your near-term sales pace justifies, and it is not just a cash issue; it is a direct input to the IPI that governs your capacity. The short version: Amazon estimates your excess as roughly the stock beyond a few months of demand, it drags your score and racks up fees, and clearing it is both a cash win and an IPI win. Below is how Amazon flags it, why it costs you, and how to find and clear it.
Amazon estimates excess inventory as the units beyond what your recent and forecast sales are likely to move in the near term, commonly framed as more than roughly 90 days of supply.1 It surfaces this as an estimated-excess figure in the inventory health and manage-excess tools, often with a recommended action.
The exact threshold and the estimate behind it are Amazon's, and they can shift, so treat the flag as a directional signal rather than a precise cutoff. What matters is the message: this stock is projected to sit, and sitting stock costs you.
This is Amazon's specific designation. For the broader operator concept of holding too much and how it compounds, see overstocking inventory; this article is about how Amazon itself flags and scores it.
Flagged excess hits you three ways, which is why it is worth acting on the flag:
It drags your IPI. Excess-inventory percentage is a direct component of the score, so flagged excess lowers the IPI that controls your capacity, and a tighter capacity can then block restocking a healthy SKU.
It freezes cash. Money tied up in slow-moving stock is money you cannot put toward your winners, the inventory cash-flow problem in another form.
None of these is dramatic on its own, but together, on a catalog with a lot of flagged excess, they are a real drain on both profit and your ability to operate.
The manage-excess and inventory-health tools show your estimated excess per SKU with recommended actions.
The FBA inventory age report shows how long stock has been sitting, which is the aging clock behind the surcharge.
Your own days of supply and turnover per SKU corroborate the flag and catch excess before Amazon formally flags it.
Read these per SKU. A healthy account average hides the specific products that are carrying the excess, and those are the ones to act on. (Stranded inventory is a related but distinct problem: units that cannot sell at all because the listing is inactive, rather than sellable stock you simply have too much of.)
Once flagged, the fix is to move it before it ages further. Work the options roughly in order of margin preserved, from a gentle price nudge down to removal:
Accelerate sell-through first. For stock that will sell at a reasonable price, a promotion or a price cut turns slow inventory back into cash and clears the excess component, keeping the most margin.
Bundle or cross-sell. Pairing excess with a faster mover can move both.
Use outlet or liquidation for stock you cannot move at a reasonable price on the main listing.
Remove or dispose last, for true dead stock, since paying storage into surcharges is often worse than a removal fee.
Clearing excess does double duty: it lifts the IPI component and frees the cash, so it is one of the higher-return cleanup actions in FBA.
The remove-versus-hold call is worth doing on the numbers. Say you have 400 excess units of a SKU that will take ten months to sell at the current pace. Holding them means storage every month plus, once they cross the aging thresholds, the aged surcharge, and the cash stays frozen the whole time. A removal or disposal order has a one-time per-unit fee but stops all of that. To run the math on your own SKU, pull the three numbers you need from Amazon: the per-unit removal fee (shown when you create the removal order), your monthly storage rate, and the aged-surcharge rate (both in the fee schedule). When the projected storage-plus-surcharge cost to hold the excess to sell-through exceeds the removal fee, removing is the cheaper choice, and it frees the capacity and cash immediately. As a rough illustration, 400 units at 0.2 cubic feet each is 80 cubic feet; at the standard monthly storage rate that is on the order of tens of dollars a month, so holding for ten months runs into the hundreds, plus the aged surcharge once it ages, against a one-time removal fee. See FBA storage fees for the current per-cubic-foot rates. For slow, bulky, or low-margin excess, removal often wins; for a SKU that will clear with one promotion, a price cut is better.
Clearing excess is only half the job; the other half is not re-creating it:
Order to real demand. Size reorders to your measured 30-to-60-day velocity, not a supplier-suggested quantity or a 90-day best case, so you stop over-buying. Excess also consumes the cubic-foot capacity that sets your allowance and can tighten your restock limits.
Respect the MOQ trade-off. When a supplier minimum forces more than you need, weigh the excess cost before accepting it.
Watch the leading signal. A rising inventory-to-sales ratio or days of supply flags building excess before Amazon does.
The durable fix is ordering discipline; the clearance is just cleaning up what poor ordering left behind.
Amazon flags excess inventory as stock beyond your near-term demand, and because excess-inventory percentage feeds your IPI, it costs you capacity as well as cash and storage. Find it in Amazon's excess and inventory-age tools, clear it with promotions, bundles, or removals before it ages, and fix the ordering that created it. It is a core lever in how to improve your IPI and a direct input to your Amazon IPI score.
The roughly 90-day-of-supply framing for excess is a common description of Amazon's estimate, not a fixed published constant; Amazon calculates estimated excess from its own demand forecast and can change the method. Use it as a directional signal and confirm the current figure in your inventory dashboard. ↩