Digital Signature Certificate: Online Registration & Types Guide

A Digital Signature Certificate (DSC) is the electronic equivalent of a handwritten signature used to authenticate individuals or organisations in online transactions and statutory filings. In India, DSCs are issued by licensed Certifying Authorities (CAs) such as eMudhra and are governed by the Information Technology (IT) Act, 2000, which provides the legal framework for secure digital authentication and electronic transactions.

In India, DSCs operate under the Public Key Infrastructure (PKI) framework and are regulated by the Controller of Certifying Authorities (CCA), which licenses and supervises Certifying Authorities.

Types of Digital Signature Certificate 

DSCs are categorised according to their security level and intended use. However, as per guidelines issued by the Controller of Certifying Authorities (CCA), Class 1 and Class 2 DSCs were discontinued from 1 January 2021. Currently, only Class 3 DSCs are issued and accepted for government filings and secure online transactions in India.

The following are the key variants: 

Class 3 DSC

A Class 3 DSC is the highest level of DSC issued to individuals or organisations. It is used for secure online transactions and filings on government portals where strong identity verification is required, as Class 3 DSCs are issued only after a strict identity verification process.

Businesses and individuals commonly use Class 3 DSCs for:

• Filing forms and documents on the Ministry of Corporate Affairs (MCA) portal
• GST registration and filings on the Goods and Services Tax (GST) portal
• Filing returns on the Income Tax Department e-filing portal (mandatory for companies and LLPs)
• Participation in government e-tendering and procurement portals

Class 3 DSCs are mandatory for companies, LLPs and professionals submitting statutory filings. They are optional for individuals filing their own income tax returns unless they choose DSC-based signing.

Class 3 DSC (Individual)

This DSC is issued to an individual user for personal or professional use. It is commonly used by:

• Chartered accountants, company secretaries and tax professionals
• Directors or partners signing statutory filings
• Individuals participating in e-tendering or secure online transactions

Class 3 DSC (Organisation)

This type of DSC is issued to an authorised representative of a company or organisation. It verifies both the identity of the individual and their authorised association with the organisation.

It is commonly used by:

• Directors or authorised signatories of companies
• Employees authorised to sign filings on behalf of the organisation
• Businesses participating in e-tenders or submitting official documents online

Digital Signature Certificate Online Registration Process 

Obtaining a DSC involves identity verification and registration with a licensed CA. The following steps outline the typical process for applying for a DSC in India: 

• Choose a Certifying Authority (CA)

Select a government-licensed Certifying Authority that issues DSCs, such as eMudhra, Capricorn Identity Services, Pantasign, Sify Safescrypt or NSDL.

• Fill the application form

Visit the CA’s website and complete the online DSC application form by providing details such as name, contact information and the type of DSC required (individual or organisation).

• Submit necessary documents

Upload the required KYC documents, which usually include:

• PAN card
• Aadhaar card
• Photograph
• Address proof

Organisation-based DSCs may require additional documents.

• Complete Verification (e-KYC)

Applicants must complete identity verification. Most Certifying Authorities require video verification or Aadhaar-based e-KYC authentication to confirm identity before issuing a DSC.

• Receive DSC 

After successful verification and payment of the applicable fee, the DSC is issued. The certificate is usually installed on a secure USB crypto token (FIPS-compliant hardware device). Some providers also offer cloud-based or remote DSC solutions that allow digital signing without a physical token.

How to register or use a Digital Signature Certificate on government portals

Users usually need to install the required signing utility software and register the DSC on the portal before using it.

Income Tax portal

1. Log in to your account on the Income Tax Department e-filing portal.
2. Go to My Profile and select Register DSC.
3. Install emSigner or the portal’s digital signing utility if prompted.
4. Select the certificate provider and digitally sign to complete registration.

GST portal

1. Log in to the Goods and Services Tax (GST) portal.
2. Go to My Profile and choose Register / Update DSC.
3. Install the required signer utility.
4. Select the DSC from your token and complete the registration process.

DGFT portal

1. Log in to your account on the Directorate General of Foreign Trade (DGFT) portal.
2. Open My Dashboard.
3. Click View and Register Digital Signature Token.
4. Select your DSC and complete the registration.

eMudhra portal

Individuals and businesses can purchase a DSC through the eMudhra portal by following these steps:

1. Click Buy Certificate and choose the user type: individual or organisation.
2. Select the certificate type: signature certificate or a combined signature and encryption certificate (commonly required for e-tendering).
3. Choose the certificate validity period (typically 2 or 3 years).
4. Complete online identity verification through e-KYC or video verification.
5. After verification, the DSC is issued and installed on a USB token or provided through a remote signing solution.

Conclusion

A DSC enables secure online authentication and digital signing for statutory filings and transactions. In India, only Class 3 DSCs are currently issued and accepted for most government platforms.

DSCs are typically issued with validity options of 1, 2 or 3 years and operate on the Public Key Infrastructure (PKI) framework, which ensures authentication, integrity and non-repudiation of digitally signed documents.

If your business regularly handles statutory filings and financial records, maintaining organised documentation becomes essential. Tools such as TallyPrime can help manage accounting records and compliance data efficiently while supporting smoother business operations.