Testing and calibration services is classified under SAC heading 9983 (Other professional, technical and business services). Main codes: 998346 technical testing and analysis services. GST as on 1 November 2026: 18%. Services have SAC codes; invoices often label the column "HSN/SAC".
Rates checked on 1 November 2026 · BooksOn HSN dataset v9, compiled from CBIC notifications
Look up any HSN or SAC code and its GST rate on any date since 1 July 2017, with the CBIC notification — in the free BooksOn HSN app. Works offline, no ads.
What is the GST rate on Testing and calibration services?
GST on Testing and calibration services as on 1 November 2026: 18% in most cases; Nil applies only to the specific entries listed below. Each entry below names the CBIC notification it comes from.
| New GST rate | Old GST rate (before 22 Sep 2025) | Code | What it covers |
|---|---|---|---|
| 18% | 18% | 9983 | Other professional, technical and business services not covered by item (i) above or serial number 38 below have GST at 18%. 15/2025-CT(R), entry 21(ii) |
| Nil | Nil | 9983 | Registrations required by law, and government safety testing, calibration or certification (like fire licence) for workers, consumers or the public, have no GST. 12/2017-CT(R), entry 47 |
How to find the rate on an old invoice's date: GST rate on a past date.
9983 Other professional, technical and business services
| Code | Description (as in the tariff) |
|---|---|
998346 | Technical testing and analysis services |
See all 62 codes on the SAC 9983 page.
Which code goes on your GST invoice?
With aggregate turnover up to ₹5 crore in the previous year, write at least the 4-digit code (9983) on tax invoices to registered buyers (B2B; optional on B2C invoices); above ₹5 crore, the 6-digit code that fits (998346) on every tax invoice. The HSN summary in Table 12 of GSTR-1 takes the same digits. Details: invoice rules under Notification 78/2020-Central Tax.
Questions
What is the SAC code for Testing and calibration services?
Testing and calibration services is classified under SAC heading 9983 (Other professional, technical and business services). Main codes: 998346 technical testing and analysis services. GST as on 1 November 2026: 18%. Services have SAC codes; invoices often label the column "HSN/SAC".
What is the HSN code for Testing and calibration services?
Testing and calibration services is a service, so it has a SAC code, not an HSN code: SAC 9983 (Other professional, technical and business services). Invoices and GST software often label the column "HSN/SAC".
What is the GST rate on Testing and calibration services?
As on 1 November 2026, GST on Testing and calibration services is 18%, depending on the exact code and how it is sold or supplied (CBIC notification 15/2025-CT(R)). Reference only; check the notification.
Did the GST rate on Testing and calibration services change in 2025?
No. GST 2.0 on 22 September 2025 did not change the rate entries for Testing and calibration services.
← HSN and SAC codes for common items · Search any code on the HSN code finder.
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Codes and descriptions from the BooksOn HSN dataset (version 9, 2026-11-01), compiled from the Customs Tariff and CBIC notifications. Reference only; see Sources & disclaimer.