From 01-04-2021, the rules for mentioning of HSN code on tax invoices is changing. Vide notification no. 78/2020 dated 15-10-2020 the government has specified the requirement of mentioning the HSN code on Tax Invoice issued by a registered tax payer as follows.
Number of digits of HSN code to be mentioned on tax invoice
|1||If Aggregate Turnover in preceding Financial Year is upto Rs. 5 Crores||4 Digits of HSN code is required on Tax Invoice|
|2||If Aggregate Turnover in preceding Financial Year is more than Rs. 5 Crores||6 Digits of HSN code is required on Tax Invoice|
The registered person having turnover upto Rs. 5 crores in the preceding financial year is not required to mention the HSN codes as given above in case of supplies made to Unregistered Persons.
You can find the HSN codes relevant for your product on this link
You can find the Service Accounting codes relevant for your service on this link
You can download the relevant GST notification by following this link.