2840.30.00
Peroxoborates (perborates)
Borates; peroxoborates (perborates)
Data provenance: Rates from HTS Revision 16 (Aug 15, 2026); trade measures verified against CBP CSMS and Federal Register notices through Aug 15, 2026.
Duty rates
Column 1 (General / MFN)
3.7%
Column 2 (Non-NTR)
25%
Column 1 (Special / FTA)
Free
Eligible
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)
No active Chapter 99 measures are linked to this code.
Rate-change history
What the rate was before, and when it changed. The government schedule replaces each revision in place; we keep the timeline.
-
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 3.7%.
Related CBP rulings
The tariff classification of boric acid (CAS 10043-35-3) borax decahydrate (CAS 1303-96-4) and cromolyn sodium (CAS 15826-37-6) from France
The applicable subheading for the boric acid will be 2810.00.0000, Harmonized Tariff Schedule of the United States (HTSUS), which provides for Oxides of boron; boric acids. The rate of duty will be 1.5 percent ad valorem.
The tariff classification of Ammonium Tetraborate from France
The tariff classification of Ammonium Tetraborate from France
Other codes in heading 2840
Duty by origin country
The rate above is the statutory base. Total landed duty depends on origin — see the calculated rate for 2840.30.00 from each major US trading partner.
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