Every dated change that hit US marketplace sellers in 2026, in one place

Key takeaways

• Eleven separate dated changes affected US marketplace sellers across 2025 and 2026, from Amazon, from CBP and from Congress.
• Several interact rather than stacking independently. The end of prep services on 1 January and the FNSKU mandate on 31 March affect the same sellers, in the same direction, three months apart.
• Two are still ahead: a CBP mail entry test on 22 September 2026, and the statutory repeal of Section 321 for commercial shipments on 1 July 2027.
• Every entry here carries its date and links to the guide where the figures and sources sit.
• The point of a dated list is that undated advice is unusable in this subject. Most published guidance describes a moment without saying which one.

This site’s editorial position is that a rate without a date is a rumour with a decimal point. This page is that position applied to a year.

Every entry links to the guide where the figures, the sources and the disagreements between sources are set out. Dates are as reported at the time of writing; verify anything you are about to act on.

01The timeline

2025 — the groundwork

2 May 2025 — De minimis eliminated for China and Hong Kong origin goods under Executive Order 14256. → De minimis guide

29 August 2025 — The $800 duty-free threshold suspended for every country of origin, closing the country-hopping route. The step most sellers missed, because 2025 coverage focused on China. → De minimis guide

October 2025 — Amazon announces the 2026 US fee update, roughly three months ahead. Also reported: 0-day handling becomes the fulfilment speed baseline for FBM sellers on Seller-Fulfilled Prime and premium shipping. → Buy Box guide

September 2025 — European seller accounts migrate to the delivery-date based reserve. → DD+7 guide

2026 — the year it all landed

1 January — Amazon ends US FBA prep and labelling services. FNSKU labelling, poly-bagging and protective packaging move to the seller or a prep centre at a reported $0.35 to $2.00 per unit. → Prep guide

15 January — US FBA fulfilment fees change. An average $0.08 per unit, but with selling price becoming an input through three bands, and reported band variation from $0.05 to $0.51. Inbound defect fees rise from a reported $0.02–$0.07 range to $0.32–$5.72. → Fee changes · Price bands

15 January — AWD fees rise, with a reported West-region premium of about 19%. → AWD guide

12 February — Review pooling across variations ends for variations Amazon judges to have significant feature differences. → Variations guide

12 March — DD+7 applies to remaining North American accounts. Funds release seven days after delivery; reported order-to-bank of 14 to 27 days for FBA. → DD+7 guide

31 March — Commingled inventory ends. Brand Registry brand owners can use GS1 manufacturer barcodes as the tracking identifier; resellers must FNSKU every unit, with unlabelled inventory reported as classified defective. → Barcodes guide

17 April — A 3.5% fuel and logistics surcharge applies to FBA fulfilment fees. → Surcharge guide

30 April — All FBA-eligible dangerous goods qualify for the Partnered Carrier programme. → Hazmat guide

24 June — The de minimis suspension is codified by regulation through CBP interim final rules. → De minimis guide

1 July — FBA storage rates revised. Standard off-peak reported moving to $0.87 per cubic foot, and the aged-inventory trigger tightening from 271 days to 180. → Storage guide

8 July — CPSC certificates must be filed electronically with CBP via a Partner Government Agency message set, for importers of most regulated consumer products. → Compliance guide

12 August — The EU Packaging and Packaging Waste Regulation applies, with expanded marketplace obligations to verify seller EPR compliance. → Europe guide

15 October to 14 January 2027 — Holiday peak fulfilment fees, at a reported average $0.32 per unit, with the 3.5% surcharge on top. → Peak fee guide

Still ahead

22 September 2026 — CBP Entry Type 13 voluntary test begins for international mail shipments valued at $2,500 or less. → Entry types guide

1 July 2027 — Section 321 repealed for commercial shipments under the One Big Beautiful Bill Act of 2025. The current arrangement is a transition, not an endpoint. → Entry types guide

02Where they interact

The list above reads as eleven independent events. Four pairs are not.

1 January and 31 March. Amazon stopped labelling inventory, then made labelling mandatory for resellers. The same sellers, the same direction, three months apart. → Prep · Barcodes

15 January and 17 April. The fulfilment fee changed, then a percentage was applied to it. Because price is now an input to the fee, one price change moves three numbers. → Price bands

1 July and 15 October. The storage rate rose and the aged-inventory trigger tightened, and then the peak fulfilment fee opened — before Q4 storage does. → Storage · Peak fee

12 March and everything upstream. DD+7 widened the gap between spending and receiving in the year every other cost rose. → Peak season

03What to do with this

Check which of these you have actually acted on. Most sellers have adjusted for one or two and absorbed the rest without noticing.

Rebuild unit economics once, properly, rather than adjusting for each change as it is reported. The margin calculator and the landed cost guide are the two inputs.

Diarise the two ahead. September 2026 and July 2027 are both known now.

Treat every published rate card as dated. The reason this page exists is that most guidance in this subject describes a moment without naming it — and after a year like this one, that makes it unusable.

Frequently asked

What was the biggest change of 2026 for sellers?

It depends on your model. For resellers, the combination of prep services ending on 1 January and mandatory FNSKU labelling from 31 March. For everyone, DD+7 on 12 March changed when money arrives. For importers, the de minimis codification on 24 June.

Which changes are still coming?

A CBP Entry Type 13 voluntary test for mail shipments from 22 September 2026, and the statutory repeal of Section 321 for commercial shipments on 1 July 2027.

Why does the date matter so much?

Because published rate cards are rarely revisited. Sources giving $0.78 for storage and 271 days for the aged-inventory trigger were correct before 1 July 2026 and wrong after it — and most of them do not say when they were written.

Do these changes stack?

Several interact rather than stacking independently. Prep ending and FNSKU becoming mandatory hit the same sellers; the fee change and the surcharge compound because one is a percentage of the other.

Where do the figures come from?

Each entry links to the guide where the sources are listed with retrieval dates, including the cases where published sources disagree with each other.

Sources

1. Update to U.S. referral and Fulfillment by Amazon fees for 2026, Amazon Selling Partners accessed 2026-08-08
2. Amazon GTIN guide 2026 (commingled inventory eliminated 31 March 2026), Feedvisor accessed 2026-08-08
3. Amazon FBA vs 3PL: full cost comparison (US FBA prep and labelling services ending 1 January 2026), WarehousingCosts accessed 2026-08-08
4. Amazon FBA storage fee overhaul now live (rates and aged-inventory trigger effective 1 July 2026), Nova Analytics accessed 2026-08-08
5. Amazon’s new DD+7 payout policy (12 March 2026 for North American accounts; September 2025 for Europe), SlopePay accessed 2026-08-08
6. Children’s Product Certificate (eFiling of certificates of compliance with CBP from 8 July 2026), CPSC accessed 2026-08-08
7. The end of de minimis: new US entry processes (Section 321 repeal effective 1 July 2027; Entry Type 13 test from 22 September 2026), Avalara accessed 2026-08-08
8. Amazon freezes 2026 holiday seller fees (peak fulfilment 15 October 2026 to 14 January 2027), PPC Land accessed 2026-08-08
9. EPR compliance guide for Amazon sellers expanding to Europe (PPWR applying from 12 August 2026), AVASK accessed 2026-08-08
10. Amazon review program (cross-variation review pooling ending 12 February 2026), Sequence Commerce accessed 2026-08-08
11. 2026 Amazon FBA fee changes: full rate card (3.5% fuel and logistics surcharge from 17 April 2026), Goat Consulting accessed 2026-08-08