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HTS 2528.00.00 duty rate

Natural borates and concentrates thereof (whether or not calcined), but not including borates …. General duty Free; for goods of Chinese origin, general + Section 301 (+25%) comes to 25% before any other duties.

FreeGeneral (MFN) duty rate
List 3 +25%Section 301, products of China
25%General + Section 301 for China, ad valorem
FreeColumn 2 (Cuba, North Korea, Russia, Belarus)

Official USITC Harmonized Tariff Schedule, 2026HTSRev20 · data built 2026-10-02 · check on hts.usitc.gov

Tariff line2528.00.00
DescriptionNatural borates and concentrates thereof (whether or not calcined), but not including borates separated from natural brine; natural boric acid containing not more than 85 percent of H3BO3 calculated on the dry weight
General rateFree
Special rate (trade programs)none listed
Column 2 rateFree
Units of quantitysee statistical lines
Section 301 (China)List 3 +25%

Section 301 China tariffs on this line

Chapter 99 headingListExtra dutyStatus
9903.88.03List 3+25%in effect

Statistical reporting numbers (10-digit)

Report the 10-digit number on the entry; the duty rate is the one above.

CodeDescription
2528.00.00.05Natural sodium borates and concentrates thereof (whether or not calcined)
2528.00.00.10Natural calcium borates
2528.00.00.50Other

2026 US–China tariff reduction lists: The US–China reduction lists are not published yet. Dutyfinch checks the Federal Register every day and flags each code as soon as the list appears.

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Nearby tariff lines

This is the only rated line in its heading.

← 2526.20.00 · 2529.10.00 → · Heading 2528 · Chapter 25 · Chapter 25 rate summary

General information from the official US Harmonized Tariff Schedule (USITC) and Federal Register; not legal or customs advice. Section 232, IEEPA, antidumping/countervailing and other duties can also apply. Confirm classification and rates with CBP or a licensed customs broker before you file.