HTS 2528.00.00.50: US import duty from China
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 percent of H<sub>3</sub>BO<sub>3</sub> calculated on the dry weight, Other. Here is the full China to US duty stack and what it costs to land.
Duty rate & fees
| Charge | Rate |
|---|---|
| Base duty (MFN) | 0% |
| Section 301 (Lists 1-4) | 25% |
| Total duty (on customs value) | 25% |
| Merchandise Processing Fee (MPF) | 0.3464% (min $33.58, max $651.50) |
| Harbor Maintenance Fee (HMF), ocean | 0.125% |
Worked example: $10,000 shipment
| Customs value | $10,000.00 |
| Base duty (MFN) | $0.00 |
| Section 301 (Lists 1-4) | $2,500.00 |
| Merchandise Processing Fee | $34.64 |
| Harbor Maintenance Fee | $12.50 |
| Total landed cost | $12,547.14 |
Excludes freight and insurance. Run your exact numbers in the calculator →
FAQ
What is the import duty on HTS 2528.00.00.50 from China?
Goods classified under HTS 2528.00.00.50 (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 percent of H<sub>3</sub>BO<sub>3</sub> calculated on the dry weight, Other) have a duty of 25% of the customs value on the China to US lane (base rate plus any Section 301 tariff), plus the Merchandise Processing Fee (0.3464%, min $33.58, max $651.50) and, for ocean shipments, the Harbor Maintenance Fee (0.125%).
What does HTS code 2528.00.00.50 cover?
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 percent of H<sub>3</sub>BO<sub>3</sub> calculated on the dry weight, Other. US Customs and Border Protection determines the final classification at entry.
How much does it cost to import HTS 2528.00.00.50 from China?
On a $10,000 shipment, the estimated total landed cost is $12,547, about 25.5% in duty and fees. Use the calculator for your exact value, quantity, and shipping mode.
Related codes in heading 2528
- 2528.00.00.05Natural 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 H<sub>3</sub>BO<sub>3</sub> calculated on the dry weight, Natural sodium borates and concentrates thereof (whether or not calcined)
- 2528.00.00.10Natural 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 H<sub>3</sub>BO<sub>3</sub> calculated on the dry weight, Natural calcium borates
All of Chapter 25: Salt; sulfur; earths and stone; plastering materials, lime and cement →
Estimates for planning only. Final classification and duty are determined by U.S. Customs and Border Protection at entry. Rates from USITC HTSUS 2026-06-15-cn-us. The IEEPA reciprocal tariff was struck down (SCOTUS, 2026-02-20) and is excluded. Not legal or customs-broker advice.