HSN 9027: Instruments and apparatus

HSN code 9027 covers: Instruments and apparatus; for physical or chemical analysis (e.g. polarimeters, spectrometers), for measuring or checking viscosity, porosity, etc, for measuring quantities of heat, sound or light.

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% — Coronary stents and coronary stent systems for use with cardiac catheters
• 5% — Instruments and apparatus for medical, surgical, dental or veterinary uses, for physical or chemical analysis
• 18% — Instruments and apparatus for physical or chemical analysis (for example, polarimeters, refractometers, spectrometers, gas or smoke analysis apparatus); instruments and apparatus for measuring or checking viscosity, porosity, expansion, surface tension or the like; instruments and apparatus for measuring or checking quantities of heat, sound or light (including exposure meters); microtomes [other than instruments and apparatus for medical, surgical, dental or veterinary uses for physical or chemical analysis]

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.