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

Key takeaways

• Twenty dated changes affected US marketplace sellers across 2025 and 2026, from Amazon, from CBP, from Congress and from TikTok. A reported storage-rate change on July 1, 2026 that appeared in an earlier version of this list did not happen and has been removed.
• Several interact rather than stacking independently. The end of prep services on January 1 and the FNSKU mandate on March 31 affect the same sellers, in the same direction, three months apart.
• Three are still ahead: CBP's Entry Type 13 mail test on September 22, 2026, the holiday peak fulfillment fee from October 15, 2026 to January 14, 2027, and the statutory repeal of Section 321 for commercial shipments on July 1, 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. Every 2026 date below was checked against the platform or regulator announcement in September 2026; verify anything you are about to act on.

01The timeline

2025 — the groundwork

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

August 29, 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. → Fee changes Also: 0-day handling becomes the practical fulfillment 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

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

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

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

February 12 — Review pooling across variations ends for variations Amazon judges to have significant feature differences (Amazon announcement of January 7, 2026; rollout by category to May 31). → Variations guide

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

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

February 28 — The flat $80 / $160 / $200 postal duty option expires. All postal shipments assessed ad valorem from March 1. → Entry types

April 17 — A 3.5% fuel and logistics surcharge applies to FBA fulfillment fees in the US and Canada; MCF and Buy with Prime follow on May 2. Amazon’s stated average: $0.17 per unit. → Surcharge guide

April 30 — All FBA-eligible dangerous goods qualify for the Partnered Carrier program (agency-reported; not yet verified against an Amazon announcement). → Hazmat guide

June 24 — The de minimis suspension is codified by regulation through CBP interim final rules (19 CFR 10.151 and 145.31). → De minimis guide

July 6 — Seller Fulfilled Prime speed thresholds rise: 40% one-day and 75% two-day page views for standard-size, announced May 26. → SFP guide

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

July 24 — Postal informal entry required for international mail shipments — bond, 10-digit HTS code and duty before release; compliance date October 22. → Entry types

July 27 — Amazon titles capped at 75 characters outside media, with a new 125-character Item Highlights field; announced June 10. → Listing optimization

July 30 — FBA New Selection Program (2026): referral fee capped at 10% on the first 100 units and 5% on the next 100 of a new branded parent ASIN; enrollment through October 31. → New Selection

August 4 — TikTok Shop raises the US referral fee from 6% to 8% on most non-food categories, per trade reports. → TikTok fee increase

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

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

Still ahead

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

July 1, 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.

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

January 15 and April 17. The fulfillment 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

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

March 12 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.

Pick the three dates on this list that touched your margin and check whether your price, your reorder point and your payout model were updated after each one. If any answer is no, that is the guide to open next.

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 January 1 and mandatory FNSKU labeling from March 31. For everyone, DD+7 on March 12 changed when money arrives. For importers, the de minimis codification on June 24.

Which changes are still coming?

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

Why does the date matter so much?

Because published rate cards are rarely revisited. Articles quoting 200-character titles, a nine-month shipment claim window or a flat postal duty were all correct once and are all wrong now — and most of them do not say when they were written. One widely copied 2026 storage-rate change never happened at all.

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. Fuel and logistics-related surcharge: FBA, MCF, and BWP in US and CA (April 17 and May 2, 2026), Amazon Seller Central, Seller Forums announcement, April 2, 2026 Primary source accessed 2026-09-05
2. Holiday 2026: same fees, same eligibility, earlier deadlines (peak window October 15, 2026 to January 14, 2027), Amazon Seller Central, Seller Forums announcement, July 7, 2026 Primary source accessed 2026-09-05
3. Indefinite Suspension of the De Minimis Exemption for Mail Shipments and New Postal Informal Entry Process (July 24, 2026; compliance October 22, 2026), Federal Register / U.S. Customs and Border Protection, June 24, 2026 Primary source accessed 2026-09-05
4. Amazon ends FBA commingling on March 31 (Brand Representative manufacturer barcodes; FNSKU for resellers), PPC Land Secondary accessed 2026-09-05
5. Amazon tightens Seller Fulfilled Prime speed rules starting July 6, PPC Land Secondary accessed 2026-09-05
6. Update to U.S. referral and Fulfillment by Amazon fees for 2026, Amazon Selling Partners Primary source accessed 2026-09-05
7. Amazon GTIN guide 2026 (commingled inventory eliminated March 31, 2026), Feedvisor Secondary accessed 2026-09-05
8. Amazon FBA vs 3PL: full cost comparison (US FBA prep and labeling services ending January 1, 2026), WarehousingCosts Secondary accessed 2026-09-05
9. Amazon’s new DD+7 payout policy (March 12, 2026 for North American accounts; September 2025 for Europe), SlopePay Secondary accessed 2026-09-05
10. Children’s Product Certificate (eFiling of certificates of compliance with CBP from July 8, 2026), CPSC Primary source accessed 2026-09-05
11. The end of de minimis: new US entry processes (Section 321 repeal effective July 1, 2027; Entry Type 13 test from September 22, 2026), Avalara Secondary accessed 2026-09-05
12. Amazon freezes 2026 holiday seller fees (peak fulfillment October 15, 2026 to January 14, 2027), PPC Land Secondary accessed 2026-09-05
13. EPR compliance guide for Amazon sellers expanding to Europe (PPWR applying from August 12, 2026), AVASK Secondary accessed 2026-09-05
14. Amazon review program (cross-variation review pooling ending February 12, 2026), Sequence Commerce Secondary accessed 2026-09-05
15. 2026 Amazon FBA fee changes: full rate card (3.5% fuel and logistics surcharge from April 17, 2026), Goat Consulting Secondary accessed 2026-09-05