2026 HTS Revisions: Every Revision and What It Changed
All 20 revisions of the 2026 Harmonized Tariff Schedule, with the dates each was in force and what each changed, from Section 232 pharma to Section 338 Canada.
Brendan McLaughlinFounder of HTS Hero- Published
- Reading time
- 2 min read
Key takeaways
- The US International Trade Commission published 20 revisions of the 2026 Harmonized Tariff Schedule through September 28, 2026, on top of the Basic Edition.
- As of October 6, 2026, the current revision is 2026 HTS Revision 20, in force since September 28, 2026.
- The duty on an import is set by the rules in force on its entry date, so the same product can owe different amounts a few weeks apart.
- The biggest revisions of 2026 brought Section 301 Brazil (Revision 12), Section 301 forced-labor duties (Revision 13), Section 232 pharmaceuticals (Revision 14), Section 338 Canada (Revision 17) and Section 232 drones (Revision 18).
The US International Trade Commission (USITC) has published 20 revisions of the 2026 Harmonized Tariff Schedule (HTS) so far, Revision 1 on January 16, 2026 through Revision 20 on September 28, 2026. As of October 6, 2026, Revision 20 is current. The table below lists every revision, the dates it was in force, and a link to our breakdown of what it changed.
How HTS revisions work
The USITC publishes the Harmonized Tariff Schedule once a year as a Basic Edition, then revises it whenever the law changes. In 2026 that's been often: a new proclamation, a Federal Register notice from USTR, or a technical correction each produces a revision.
Every revision comes with a change record that lists what changed. Most of the changes that move money are in Chapter 99, where the additional tariffs live. A revision can add tariffs, end them, change their rates, or change which products and countries they cover.
The entry date decides
The duty on an import is set by the rules in force on its entry date. To check what you should have paid on a past entry, you need the revision that was in force that day. A change can also start before or after the revision that publishes it: Revision 17's Canada duties, for example, applied from August 22, two days before the revision itself.
Every 2026 revision
Each row links to our breakdown of that revision: what changed, when it took effect, and what it means for importers.
| Revision | In force | What changed |
|---|---|---|
| Revision 20 (2026) | Sep 28, 2026 to today | Pharma Tariff List and R&D Exemption |
| Revision 19 (2026) | Sep 15, 2026 to Sep 28, 2026 | Section 338 Canada Lists Expanded |
| Revision 18 (2026) | Sep 2, 2026 to Sep 15, 2026 | Section 232 Drone Tariffs, Beef Quota |
| Revision 17 (2026) | Aug 24, 2026 to Sep 2, 2026 | 50% Section 338 Tariff on Canada |
| Revision 16 (2026) | Aug 14, 2026 to Aug 24, 2026 | Section 201 Quartz Safeguard Tariff |
| Revision 15 (2026) | Aug 3, 2026 to Aug 14, 2026 | UK Patented Pharmaceuticals Cut to 0% |
| Revision 14 (2026) | Jul 31, 2026 to Aug 3, 2026 | 100% Section 232 Pharmaceutical Tariff |
| Revision 13 (2026) | Jul 28, 2026 to Jul 31, 2026 | Forced-Labor Tariffs Replace Section 122 |
| Revision 12 (2026) | Jul 21, 2026 to Jul 28, 2026 | 25% Section 301 Tariff on Brazil |
| Revision 11 (2026) | Jul 1, 2026 to Jul 21, 2026 | Section 122 Fix for 9903.82.02 Steel |
| Revision 10 (2026) | Jun 8, 2026 to Jul 1, 2026 | Section 232 Metals Overhaul, 85% Rule |
| Revision 9 (2026) | May 28, 2026 to Jun 8, 2026 | Taiwan Auto Parts and Wood Capped at 15% |
| Revision 8 (2026) | May 22, 2026 to May 28, 2026 | Truck Parts Offset, No Rate Changes |
| Revision 7 (2026) | Apr 29, 2026 to May 22, 2026 | 10% Section 232 Rate for Copper Cable |
| Revision 6 (2026) | Apr 23, 2026 to Apr 29, 2026 | No post yet |
| Revision 5 (2026) | Apr 8, 2026 to Apr 23, 2026 | No post yet |
| Revision 4 (2026) | Feb 25, 2026 to Apr 8, 2026 | No post yet |
| Revision 3 (2026) | Feb 12, 2026 to Feb 25, 2026 | No post yet |
| Revision 2 (2026) | Jan 30, 2026 to Feb 12, 2026 | No post yet |
| Revision 1 (2026) | Jan 16, 2026 to Jan 30, 2026 | No post yet |
| Basic Edition (2026) | Dec 31, 2025 to Jan 16, 2026 | No post yet |
Dates are when each revision was in force. Changes inside a revision can take effect earlier or later; each post gives the exact dates.
The biggest 2026 HTS revisions
- Revision 12: a new 25% Section 301 tariff on products of Brazil.
- Revision 13: Section 122 ended and Section 301 forced-labor duties of 10% or 12.5% began.
- Revision 14: the Section 232 pharmaceutical tariff, up to 100% on patented drugs.
- Revision 16: a Section 201 safeguard on quartz surface products.
- Revision 17 and Revision 19: a 50% Section 338 tariff on listed Canadian goods, then wider lists that stack with Section 232.
- Revision 18: Section 232 tariffs of 25% or 100% on drones.
For the full list of individual tariff changes across all revisions, see Latest US Tariff Changes. To see how one product's duty moved across revisions, HTS Hero's duty calculator works out the duty on any entry date from Revision 5 (April 8, 2026) onward, using verified tariff data.
Frequently asked questions
What is an HTS revision?
A revision is a new edition of the Harmonized Tariff Schedule published by the US International Trade Commission. Each one carries a change record listing what changed, usually new or amended Chapter 99 tariffs, and a date it takes effect.
How many times has the HTS been revised in 2026?
Twenty times through September 28, 2026 (Revisions 1 to 20), after the 2026 Basic Edition took effect on December 31, 2025.
What is the current HTS revision?
As of October 6, 2026, it's 2026 HTS Revision 20, in force since September 28, 2026. It updated the Section 232 pharmaceutical tariff list and added an exemption for clinical trial and R&D use from September 29, 2026.
Where can I find the change record for an HTS revision?
The USITC publishes each revision with its change record at hts.usitc.gov. The change record lists every item that changed, the nature of the change, its effective date and its legal source, such as a presidential proclamation or a notice.
Which HTS revision applies to my entry?
The one in force on the date your goods were entered. Each revision is in force from its effective date until the next one replaces it, and individual tariff changes inside a revision can have their own effective dates.
Sources
The official documents this article is based on
Brendan McLaughlin · Founder of HTS Hero
Brendan is the founder of HTS Hero and a self-proclaimed tariff nerd. He has spent more than a year building and maintaining HTS Hero's tariff calculator, which meant reading every government tariff update and all 4,000+ pages of the Harmonized Tariff Schedule, across many revisions. He writes about US tariffs regularly on LinkedIn.
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