Limestone flux from India
India exported $71.5 million of limestone flux (HS 2521.00) in FY2025-26, up 27% on FY2024-25. Goods made in India pay 10% US import duty, against 37.5% for goods from China.
- US duty from India
- 10%China 37.5%
- India's exports, FY2025-26
- $71MUp 27.4% on last year
- HS code
- 2521.00Page updated 6 Nov 2026
US import duty, India vs China
India pays 27.5 points less on the lowest-duty line. From the USITC HTS 2026 Rev 22.
The US tariff line
| HTS line | Description | Base | India | China |
|---|---|---|---|---|
| 2521.00.00.00 | Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement | Free | 10% | 37.5% |
Totals include the Section 301 duty on goods from India or China and any Section 232 metals duty. They exclude anti-dumping and countervailing duties and customs fees. Check the current rate before you quote.
India's exports of limestone flux
India's exports to all countries under HS 2521.00, April to March, from DGCI&S.
Rules and other duties
- EU base duty
- The EU's average applied base (MFN) rate on HS 2521.00 is 0%, from 2021 data. Check the current rate in TARIC before you quote.
- India's export policy
- Free to export, with no licence needed.
Common questions
What is the US import duty on limestone flux from India?
10% on the US tariff line for this code, including the Section 301 duty on Indian goods and any Section 232 metals duty. Goods from China pay 37.5%. Anti-dumping duties and customs fees aren't included.
What is the HS code for limestone flux?
2521.00, under heading 2521. Check the exact 8-digit or 10-digit line with your customs broker, since duty can differ between lines.
Does India export limestone flux?
Yes. India exported $71.5 million under HS 2521.00 in FY2025-26, according to DGCI&S, the Ministry of Commerce's trade statistics body.