HS 2528-00-00-00 – Natural borates and concentrates thereof (whether or not calcined), but not including borates separated from natural brine; natural boric acid containing not more than 85% of H3BO3 calculated on the dry weight.

Tariff data as of T2026-2, effective Sept 1, 2026, last verified Oct 21, 2026

Natural borates and concentrates thereof › Natural borates and concentrates thereof (whether or not calcined), but not including borates separated from natural brine; natural boric acid containing not more than 85% of H3BO3 calculated on the dry weight. › Natural borates and concentrates thereof (whether or not calcined), but not including borates separated from natural brine; natural boric acid containing not more than 85% of H3BO3 calculated on the dry weight.

MFN duty rate

Free

GST

5%

Unit of measure

KGM

Natural borates and concentrates thereof (whether or not calcined), but not including borates separated from natural brine; natural boric acid containing not more than 85% of H3BO3 calculated on the dry weight.

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Preferential tariff rates

• Honduras (HNT): Free
• CETA: Free
• CPTPP: Free
• Costa Rica (CRT): Free
• Chile: Free
• UK: Free
• Israel (CIAT): Free
• Switzerland–Liechtenstein (SLT): Free
• MXT/CUSMA (Mexico): Free
• UST/CUSMA (US): Free
• Jordan (JT): Free
• LDCT: Free
• Ukraine: Free
• GPT: Free
• Panama (PAT): Free
• Korea: Free
• CPTPP – United Kingdom (CPUKT): Free
• Iceland: Free
• Commonwealth Caribbean Countries Tariff (CCCT): Free
• Peru: Free
• Norway (NT): Free
• Colombia: Free

Preference requires qualifying origin and origin proof or certification.

Frequently asked questions

What is the MFN duty on Natural borates and concentrates thereof (whether or not calcined), but not including borates separated from natural brine; natural boric acid containing not more than 85% of H3BO3 calculated on the dry weight. (HS 2528-00-00-00)?

The T2026-2 MFN rate for tariff item 2528.00.00 is Free. Specific or compound rates require manual calculation. Classification and origin must be verified with CBSA.

What is the duty on HS 2528-00-00-00 from the US?

Qualifying US-origin goods with origin proof use UST/CUSMA at Free. This item is not on any US surtax schedule in force in TariffPlus surtax data (checked against CBSA). GST/HST and any applicable personal-import provincial tax are additional.

Which trade agreement rates apply to HS 2528-00-00-00?

Honduras (HNT): Free; CETA: Free; CPTPP: Free; Costa Rica (CRT): Free; Chile: Free; UK: Free; Israel (CIAT): Free; Switzerland–Liechtenstein (SLT): Free; MXT/CUSMA (Mexico): Free; UST/CUSMA (US): Free; Jordan (JT): Free; LDCT: Free; Ukraine: Free; GPT: Free; Panama (PAT): Free; Korea: Free; CPTPP – United Kingdom (CPUKT): Free; Iceland: Free; Commonwealth Caribbean Countries Tariff (CCCT): Free; Peru: Free; Norway (NT): Free; Colombia: Free. Preferential treatment requires qualifying origin and certification. Rates are informational; CBSA is authoritative.