HSN 8406: Turbines; steam and other vapour turbines

HSN code 8406 covers: Turbines; steam and other vapour turbines.

The GST rate for this code depends on the specific item (per CBIC Notification 9/2025-Central Tax (Rate), effective 22 Sep 2025). The official schedule lists:

• 5% — Following renewable energy devices and parts for their manufacture:- (a) Bio-gas plant; (b) Solar power-based devices;
• 18% — Parts suitable for use solely or principally with fixed Speed Diesel Engines of power not exceeding 15HP
• 18% — Steam turbines and other vapour turbines

Pick the line that matches what you're billing.

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.