HSN 2528: Natural borates and concentrates thereof

HSN code 2528 covers: 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.

It is taxed at 5% GST (per CBIC Notification 9/2025-Central Tax (Rate), effective 22 Sep 2025) — put 2528 in the HSN/SAC column and 5 in the GST % column when you bill it.

Rates reflect the 22 Sep 2025 GST 2.0 reform (mainly 5% and 18%, with 3% for precious metals and 28%/40% for select sin and luxury goods). This is a reference drawn from the CBIC rate schedule, not tax advice — confirm the exact rate for your specific item with your CA.