HS code 2521 00 10: Limestone flux (L.D., below 1% SiO )

HS code 2521 00 10 covers limestone flux (L.D., below 1% SiO ) in chapter 25 (salt, sulphur, earths and stone, lime and cement). Total import duty is about 10.78% of the import value; DGFT import policy: Free.

Total import dutyabout 10.78%
Basic customs duty5%
IGST5%
Import policyFree
Export policyFree
Anti-dumpingNone found

Updated 2026-11-01 from official lists, including Budget 2026 and later customs notifications.

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Key facts

Tariff item (8-digit HS code)2521 00 10
DescriptionLimestone flux (L.D., below 1% SiO )
Chapter25: Salt, sulphur, earths and stone, lime and cement
Heading2521
Unitkg.
Basic customs duty (tariff rate)5%
Basic customs duty charged5%
Social welfare surcharge10% of BCD
IGST5%
Total import dutyabout 10.78% of the import value
DGFT import policyFree
DGFT export policyFree

Import duty (with Budget 2026 changes)

  • About ₹10,780 duty on every ₹1,00,000 of import value (CIF).

DGFT import and export policy

  • Import: Free.
  • Export: Free.

India's imports and exports

  • India imported 16,208,600 tonnes in 2025-26 (up 1.1% on 2024-25) under tariff item 25210010, “Limestone flux (l.d below 1% sio2)”.
  • India exported 4,417,996 tonnes in 2025-26 (up 56.9% on 2024-25) under tariff item 25210010, “Limestone flux (l.d below 1% sio2)”.

Questions about HS code 2521 00 10

What is the import duty on HS code 2521 00 10 in India?

About 10.78% of the import value: basic customs duty 5%, social welfare surcharge 10% of BCD and IGST 5%. IGST can usually be claimed back as input tax credit.

Is the import of limestone flux (l.d., below 1% sio ) free in India?

DGFT import policy for HS code 2521 00 10 is Free.

Can limestone flux (l.d., below 1% sio ) be exported from India?

DGFT export policy for HS code 2521 00 10 is Free.

Other lines under heading 2521

2521 00 90: Other

Sources: Customs Tariff of India (CBIC) · Notification 45/2025-Customs and Budget 2026 amendments · IGST rates, Notification 9/2025-Integrated Tax (Rate) · DGFT ITC(HS) import and export policy · CBIC Customs (ADD) notifications · Export Import Data Bank (DGCI&S). Guidance from official lists, not legal advice; confirm the classification with your customs broker.