GST Portal HSN Code: Understanding the Classification for GST Registration and Filing

Updated Jan 29, 2026

Dec 2, 2025

12 min

By Nishant

Many businesses take help from service providers for GST registration, return filing, and portal related support. These are usually treated as online or IT based services. The correct GST portal HSN code is important for such service providers.

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What is the HSN code for the GST registration portal?

The official government GST portal is a platform of the Government and does not raise GST invoices. But private service providers who help with GST registration and filing use service codes. Such services often fall under information technology and support service headings, such as 99831 or similar IT related service codes.

GST Portal SAC Code Classification and GST Rates

Here are some commonly used HSN codes and GST rates for this category

4 Digit SAC Code Classification

HSN/SAC Code	HSN/SAC Code Title	GST Rate
9983	Other professional, technical and business services n.e.c.	18%
9984	Telecommunication, broadcasting and information supply services	18%

6 Digit SAC Code Classification

HSN/SAC Code	HSN/SAC Code Title	GST Rate
998313	Information technology (IT) consulting and support services	18%
998314	Information technology (IT) design and development services	18%
998315	Hosting and information technology (IT) infrastructure provisioning services	18%
998431	On-line text based information such as online books, newspapers, periodicals, directories etc.	18%
998432	On-line audio content	18%
998433	On-line video content	18%
998434	Software downloads	18%
998439	Other on-line contents n.e.c.	18%

* GST rates may vary based on the latest GST notifications and amendments

How GST registration and filing portals are classified under HSN?

Online GST filing platform that charges service fees: service code under IT or online information services
Professional firm doing registration and monthly filing: professional, tax, or legal service codes
Back office that only uploads data: business support services

GST implications on portal services

Service providers that assist with GST registration and filing must:

Charge GST on their service fees at rates like 18 percent
Use proper HSN or SAC code on invoice
Allow clients to claim ITC if conditions are met

The government GST portal itself does not charge GST on tax paid, since it is tax, not service fee.

Is there a specific HSN code only for the GST portal?

No, the GST portal is a government platform. Only private services related to portal use carry HSN / SAC codes.

What code should a GST consultant use?

A GST consultant usually uses codes for tax consultancy or business support services in the 9983 group.

Do small accountants filing returns online also need HSN code on invoice?

Yes, every registered service provider must mention a suitable service code and charge GST if liable.

Can clients take ITC on GST filing service charges?

Yes, if the service is used for business and all other ITC conditions are satisfied.

Nishant

Chartered Accountant • Delhi • MRN No.: 445516

I am a Chartered Accountant with more than five years of experience in the accounting field. My areas of expertise include GST, income tax, and audits. I am passionate about sharing knowledge through blogs and articles, as I believe that learning is a lifelong journey. My goal is to provide valuable insights and simplify financial matters for individuals and business owners alike.