Amazon FBA Peak Fulfillment Fees 2026: Rates, Dates and Margin Impact

Amazon's FBA peak fulfillment fees have been in effect since October 15, 2026 and run through January 14, 2027. Non-peak rates resume January 15.

The headline number is modest: roughly $0.32 more per unit on average in the US, and about CAD $0.39 in Canada — the same average increase as last year. But the average hides the part that actually hurts, which is that peak fees stack on top of two other increases already in place this year, and they land on the storage rate at the same time.

Here are the actual rates, what the stack costs you per unit, and the recalculation you need to run before Black Friday.

The dates that define your Q4 cost base

Note the storage line. Standard-size storage goes from $0.87 to $2.40 per cubic foot for October through December — that is a 176% increase, and it is far larger in percentage terms than the fulfillment fee change everyone talks about. If you over-shipped for Q4, that is where the damage is.

US peak fulfillment rates by size tier

Selected per-unit peak rates (excluding apparel and dangerous goods). Note that rates now vary by price band, not just size:

The price-band split is the detail most sellers miss. A small standard item costs $0.89 more to fulfil in the $10–$50 band than under $10, and $1.15 more above $50.

The practical consequence: a price increase that pushes an ASIN across a band boundary raises your fulfillment fee too. If you are planning Q4 price moves, check which side of $10 and $50 you land on before you commit — a $9.99 product repriced to $10.49 picks up both the lower unit margin of the discount era and a higher fulfillment fee.

What the full stack costs per unit

The 3.5% surcharge applies to the fulfillment fee, including the peak fee — not to your selling price. Worked through:

Look at the first row. On an $8 product, fulfillment alone eats nearly 34% of the selling price — before referral fees, before COGS, before a cent of ad spend. Low-ticket FBA is close to structurally unviable at peak rates. If your catalogue has sub-$10 ASINs, Q4 is when they stop paying for themselves.

The aged inventory trap

During the peak period the aged-inventory surcharge threshold tightens: it starts at 180 days instead of 271.

This is the quiet one. Inventory you shipped in for Q4 2025 that never sold now crosses the surcharge line roughly three months earlier than it would off-peak — while sitting in warehouse space billed at $2.40 per cubic foot rather than $0.87.

Run an aged-inventory report now, not in January. Anything already past 150 days should be discounted, bundled, liquidated or removed before it crosses the threshold during the most expensive storage window of the year.

Which programs are affected

• FBA peak fulfillment fees
• Remote Fulfillment with FBA
• Multi-Channel Fulfillment (MCF) — large standard storage also at $2.40 per cubic foot, Oct–Dec
• Buy with Prime

If you run MCF to fulfil your own Shopify or DTC orders, your off-Amazon fulfillment cost has gone up too. That is easy to miss because you are watching Seller Central, not your DTC P&L.

The recalculation to run this week

This is the part that connects fees to advertising, and it is where most sellers lose Q4 profit without noticing.

Break-even ACoS is a function of contribution margin. Peak fees cut contribution margin. Therefore peak fees cut your break-even ACoS — and every campaign still running on a target set with off-peak fees is now bidding above profitability.

1. Rebuild unit economics per ASIN with the peak fulfillment fee, the 3.5% surcharge and the peak storage rate.
2. Recalculate break-even ACoS from the new contribution margin.
3. Reset campaign targets to the new number — do not carry September's ACoS targets into November.
4. Flag every sub-$10 ASIN. Decide deliberately whether to bundle up into a higher price band, pause ads, or accept that it runs at or below break-even for traffic and rank reasons.
5. Check price-band boundaries on any ASIN you plan to reprice for BFCM.
6. Pull the aged-inventory report and act on anything past 150 days.
7. Review storage volume — every cubic foot you are holding costs nearly three times what it did in September.

The bottom line

$0.32 per unit sounds like rounding. It is not, because it never arrives alone: the peak fulfillment fee, the 3.5% surcharge, the January base increase, a 176% jump in storage and an aged-inventory threshold that tightens by 91 days all land in the same quarter.

On a thin-margin, low-ticket ASIN that combination is the difference between a profitable Q4 and buying revenue. The sellers who come out of January ahead are the ones who repriced their ad targets to peak-season economics in October — not the ones who found out in the settlement report.

Related reading

• Amazon Fee Category Changes October 31, 2026 — a second fee increase landing on the same ASINs
• 6 New Amazon Policies Hitting US Sellers in October 2026
• Amazon TACoS Explained: How to Measure True Profitability
• Amazon PPC Bidding Strategy: How to Maximise Returns

Need your Q4 unit economics and PPC targets rebuilt around peak fees? I run Amazon PPC and margin audits for sellers across US, UK and UAE accounts. Get in touch.