Brendan McLaughlin
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.
Written by Brendan
2026 HTS Revision 20: Pharma Tariff List and R&D Exemption
2026 HTS Revision 20 grew the Section 232 pharmaceutical tariff list to 149 lines and exempted clinical trial and R&D use (9903.04.70) from September 29, 2026.
· 3 min read
HTS Revisions2026 HTS Revision 19: Section 338 Canada Lists Expanded
2026 HTS Revision 19 widened the 50% Section 338 tariff on Canada from September 15, 2026, adding furniture, cheese and boats and stacking it on Section 232.
· 3 min read
HTS Revisions2026 HTS Revision 18: Section 232 Drone Tariffs, Beef Quota
2026 HTS Revision 18 added Section 232 drone tariffs of 25% or 100% from September 3, 2026, plus a 300,000-ton lean beef quota and Section 301 code fixes.
· 4 min read
HTS Revisions2026 HTS Revision 17: 50% Section 338 Tariff on Canada
2026 HTS Revision 17 added a 50% Section 338 tariff on about 550 listed Canadian products from August 22, 2026, owed even when USMCA is claimed.
· 3 min read
HTS Revisions2026 HTS Revision 16: Section 201 Quartz Safeguard Tariff
2026 HTS Revision 16 added a Section 201 safeguard on quartz countertops and slabs from August 15, 2026: 25% within the quarterly quota, 50% above it.
· 3 min read
HTS Revisions2026 HTS Revision 15: UK Patented Pharmaceuticals Cut to 0%
2026 HTS Revision 15 (August 3, 2026) cut the Section 232 tariff on UK patented pharmaceuticals under 9903.04.63 from 10% to 0%, back to July 31.
· 2 min read
HTS Revisions2026 HTS Revision 14: 100% Section 232 Pharmaceutical Tariff
2026 HTS Revision 14 (July 31, 2026) added the Section 232 pharmaceutical tariff: 100% on patented drugs, 15% for the EU and Japan, generics exempt.
· 3 min read
HTS Revisions2026 HTS Revision 13: Forced-Labor Tariffs Replace Section 122
2026 HTS Revision 13 (July 28, 2026): Section 122 ended July 23, and Section 301 forced-labor tariffs of 10% or 12.5% on 59 countries and the EU began July 24.
· 4 min read
HTS Revisions2026 HTS Revision 12: 25% Section 301 Tariff on Brazil
2026 HTS Revision 12 (July 21, 2026) adds a 25% Section 301 tariff on products of Brazil from July 22, 2026, with exemptions for coffee, aircraft and 232 goods.
· 3 min read
HTS Revisions2026 HTS Revision 11: Section 122 Fix for 9903.82.02 Steel
2026 HTS Revision 11 (July 1, 2026) restores the Section 122 exemption for 9903.82.02 steel and aluminum back to April 6, so June 2026 entries owed no 10%.
· 3 min read
HTS Revisions2026 HTS Revision 10: Section 232 Metals Overhaul, 85% Rule
2026 HTS Revision 10 (June 8, 2026) restructures Section 232 steel and aluminum tariffs: 10-15% rates for many parts, 7 new 9903.82 headings, an 85% rule.
· 4 min read
HTS Revisions2026 HTS Revision 9: Taiwan Auto Parts and Wood Capped at 15%
2026 HTS Revision 9 (May 28, 2026) caps Section 232 tariffs on Taiwan auto parts and wood furniture at 15% from May 1, and exempts Taiwan aircraft parts.
· 3 min read
HTS Revisions2026 HTS Revision 8: Truck Parts Offset, No Rate Changes
2026 HTS Revision 8 (May 22, 2026) changed no tariff rates. It makes the 25% Section 232 duty on truck and bus parts subject to a Commerce import offset.
· 2 min read
HTS Revisions2026 HTS Revision 7: 10% Section 232 Rate for Copper Cable
2026 HTS Revision 7 (April 29, 2026) lets U.S.-smelted copper wire and cable pay the 10% Section 232 rate instead of 25%, retroactive to April 6, 2026.
· 3 min read
HTS Revisions2026 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.
· 2 min read
Tariff GuidesHow US Tariffs Are Calculated: Formula and 2026 Examples
How to calculate US import duty: HTS base rate plus every Chapter 99 tariff, then MPF and HMF fees, with four worked examples from October 2026.
· 6 min read
Tariff UpdatesLatest US Tariff Changes 2026: Every Change in One Table
The latest US tariff changes as of October 2026: pharma list update, Canadian import bans, Section 338 and drone tariffs, and every 2026 change by date.
· 4 min read
Tariff GuidesTariff Stacking Rules 2026: Which US Tariffs Add Up
US tariff stacking rules in 2026: Section 301 China stacks on Section 232, forced-labor and Brazil duties switch off, and how Canada 338 and deal rates combine.
· 6 min read
Tariff GuidesWhat Are Tariffs? How US Import Tariffs Work in 2026
What are tariffs? A tariff is a tax on imported goods, paid by the US importer to CBP. Who pays, how rates are set, and which tariffs apply in 2026.
· 5 min read
Tariff UpdatesReciprocal Tariff Food Exemptions: The November 2025 List
From November 13, 2025, 237 food and farm subheadings and 11 partial exemptions under 9903.02.78 left the reciprocal tariff. What was covered, and why it ended.
· 3 min read
Tariff UpdatesDe Minimis Suspension in 2026: What $800 Imports Pay Now
The $800 de minimis exemption has been suspended since August 29, 2025. Low-value imports now pay full duty, and the suspension holds through 2026.
· 4 min read
Tariff UpdatesSection 301 China Exclusions: Extended to November 9, 2026
The 178 Section 301 China exclusions under 9903.88.69 and 9903.88.70 expire at 11:59 p.m. ET on November 9, 2026. What they cover and what to plan for.
· 3 min read
Tariff UpdatesUS Tariffs on India: The 25% Russian Oil Duty and After
The US 25% Russian oil tariff on India (9903.01.84) ran from August 27, 2025 to February 7, 2026. How it worked, its exemptions, and what India pays now.
· 3 min read