8421.99.01
Other
Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof: Parts
Data provenance: Rates from HTS Revision 19 (Sep 16, 2026); trade measures verified against CBP CSMS and Federal Register notices through Sep 3, 2026.
Duty rates
Column 1 (General / MFN)
Free
Column 2 (Non-NTR)
35%
The rates above are statutory column rates. Trade remedies in Chapter 99 (Section 301, 232, IEEPA, reciprocal) and FTA preferences can change the duty owed on a given entry — see below.
Trade measures (Chapter 99)
9903.88.01
LIST_1
The duty provided in the applicable subheading plus 25%
ActiveExcept as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Applies to origin: CN
Effective from July 6, 2018
SECTION_338
9903.03.14
The duty provided in the applicable subheading + 50%
ActiveSection 338 (Canada): goods of Canada in the Proclamation 11048 annex (motor vehicles), 50% additional ad valorem duty. The annex is far broader than its title: honey, plants, lumber, textiles, apparel, tools, furniture, sporting goods and antiques are in it.
Applies to origin: CA
Effective from August 22, 2026
Rate-change history
What the rate was before, and when it changed. The government schedule replaces each revision in place; we keep the timeline.
-
SCOPE_EXPANSION Procs. 11046 / 11047 / 11048 (91 FR 46639) — Section 338 Canada
Section 338 (Canada) motor vehicles: 439 subheadings under 9903.03.14 at 50%, effective 2026-08-22
See the change → -
NEW_PROGRAM Executive Order Feb 1, 2026 — Reciprocal Tariff (FR 2026-03824)
Section 122 reciprocal surcharge in effect — additional 10% on most imports through July 24, 2026
See the change → -
Base rate HTS 2023
Column 1 general rate set to Free.
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Other codes in heading 8421
Duty by origin country
The rate above is the statutory base. Total landed duty depends on origin — see the calculated rate for 8421.99.01 from each major US trading partner.
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