Types of DSC: Class 1, Class 2, and Class 3 Explained

Posted by

February 9, 2026

On February 9, 2026

Introduction

A Digital Signature Certificate (DSC) is widely used for secure and legally valid online transactions. However, many users are confused about the different types of DSC available. Each DSC class serves a specific purpose based on the level of security and verification required.

In this blog, we will clearly explain Class 1, Class 2, and Class 3 DSC, their uses, differences, and which one you should choose.

What are the Types of DSC?

Digital Signature Certificates are categorized based on the level of identity verification of the applicant. The higher the class, the higher the security and trust level.

The three main types of DSC are:

Class 1 DSC
Class 2 DSC
Class 3 DSC

Class 1 Digital Signature Certificate

Class 1 DSC is the basic level of digital signature certificate.

Features:

Verifies basic identity details such as name and email ID
Low level of security
Mainly used for individual communication

Uses:

Email authentication
Secure personal communication
Low-risk online transactions

Class 1 DSC is rarely used for government filings.

Class 2 Digital Signature Certificate

Class 2 DSC offers a higher level of authentication compared to Class 1.

Features:

Identity is verified against a trusted database
Medium level of security
Widely accepted on government portals

Uses:

Income Tax e-filing
GST return filing
MCA (ROC) filings
LLP and company compliance

Class 2 DSC is commonly used by professionals, directors, and business owners.

Class 3 Digital Signature Certificate

Class 3 DSC provides the highest level of security among all DSC types.

Features:

In-person or video-based identity verification
High encryption and security
Mandatory for high-risk transactions

Uses:

E-tendering
E-procurement
Online bidding
Government and corporate tenders

Class 3 DSC is mainly used by vendors, contractors, and organizations involved in large-scale transactions.

Difference Between Class 1, Class 2, and Class 3 DSC

Feature	Class 1	Class 2	Class 3
Security Level	Low	Medium	High
Identity Verification	Basic	Database-based	In-person / Video
Government Use	No	Yes	Yes
Common Usage	Email	GST, IT, MCA	Tenders

Which DSC Should You Choose?

For personal use → Class 1 DSC
For tax and MCA filings → Class 2 DSC
For tenders and high-security needs → Class 3 DSC

Choosing the right DSC depends on your purpose and the platform requirements.

Conclusion

Understanding the types of Digital Signature Certificates is essential before applying for one. Whether you need basic authentication or high-level security, selecting the correct DSC class ensures compliance, security, and smooth digital operations.

Written by:
Abhishek Gupta
Chartered Accountant
Office No. 19, Sagar Building, 4th Floor, Plot-327,
Narshi Natha Street, Masjid Bunder (West),
Mumbai – 400009
📞9324776120
🌐 www.consultguruji.com