Amazon Q4 Storage Fees: What Holding Inventory Through Peak Season Really Costs

The Three Q4 Charges

These are separate line items with separate triggers. A single SKU can pay all three in the same month:

The first two are volume charges and push you toward holding less. The third is a per-unit charge and pushes you toward holding more. Q4 is the one time of year all three bind at once.

1. Peak Storage Rates

From October through December, monthly storage rates roughly triple. These are the current US rates:

One comparison makes the scale obvious. Nine months at the off-peak standard rate costs $7.02 per cubic foot. Three months at the peak rate costs $7.20. October to December is more expensive than the rest of the year combined.

Volume, not units, is what you are billed on. Work out cubic feet per unit as length × width × height in inches divided by 1,728, using the packaged dimensions Amazon measures rather than the product's own. You can price a specific SKU with the FBA storage fee calculator.

2. The Aged-Inventory Surcharge

This is the charge that turns an expensive Q4 into a painful one, because it is assessed on top of peak storage, not instead of it. It begins at 181 days — not 271, which is the number a lot of seller advice still quotes — and steps up through seven bands:

Note the jump between 241–270 and 271–300: the surcharge goes from $1.50 to $5.45, a 3.6× step in a single band. For units at 365 days or more, Amazon charges the greater of $6.90 per cubic foot or $0.15 per unit.

The Q4 timing matters for a specific reason. Inventory that arrived for last year's peak and did not sell crosses the 271-day line somewhere around late September — right as peak rates begin. Those units go from costing $2.28 per cubic foot to $7.85 almost overnight. Check your exposure by age band with the aged inventory surcharge calculator.

3. The Low-Inventory-Level Fee

Everything above argues for holding less inventory. This charge argues the other way, and it is the one sellers walk into while trying to avoid the first two.

The fee applies when both your 30-day and 90-day historical days of supply fall below 28 days. It is assessed weekly, and it is charged per unit shipped — not on stored volume:

On 2,000 units shipped in December at the 14–20 day band, a small-standard product pays $1,260. That is real money against a storage bill you were trying to keep down, and it lands in the month when your volume is highest — which is exactly when the fee is most expensive.

Four exemptions are worth knowing: new professional sellers for their first 365 days, new FBA products for 180 days after first receipt, products auto-replenished through Amazon Warehousing & Distribution at least 70% of the time over 90 days, and products shipping fewer than 20 units in the previous 7 days. Full detail is in the low-inventory-level fee guide.

One SKU Through Q4

Take a standard-size product measuring 10 × 7 × 4 inches packaged. Volume per unit is (10 × 7 × 4) ÷ 1,728 = 0.162 cubic feet. At 1,000 units in stock, that is 162.04 cubic feet.

Now assume 500 of those units are older stock in the 271–300 day band, measuring 8 × 5 × 2 inches — 0.046 cubic feet each, 23.15 cubic feet in total. They pay both charges:

Removing those 500 units instead costs $1.04 each for small-standard units under 0.5 lb — $520 once. Against $181.72 a month, removal pays for itself in 2.9 months. If the stock will not clear by roughly March, removing it before peak rates begin is the cheaper decision.

Hold, Remove or Liquidate

The comparison is always the same: a one-off fee against a recurring one. Removal and disposal cost exactly the same per unit, so cost never decides between those two — only whether the units are worth having back does.

The break-even is simple arithmetic: divide the removal fee by the monthly holding cost to get the number of months you would need to clear the stock in for holding to win. Anything longer and you are paying rent on inventory that is not earning it. Rates by size tier are in the removal and disposal fee guide.

One accounting note: removing or disposing of stock does not make its cost disappear. Those units still carry their original cost basis, and the loss flows through your P&L when you dispose of them — which is why lot-level cost tracking matters here. See COGS and FIFO explained.

When to Act

Because storage is billed on average daily volume, the value of every decision below decays as the quarter progresses. A removal completed on 28 September avoids three full months of peak rates; the same removal on 5 December avoids almost nothing.

Restocking decisions in the September window are the highest-leverage ones of the year, because they set both your peak storage bill and your low-inventory exposure at the same time. The restock calculator works out the reorder point from your sell-through and lead time.

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