Buying DSC for GST Registration? Stop. You May Not Even Need One

Quick Answer: A Digital Signature Certificate (DSC) is mandatory for Companies and LLPs for GST registration and return filing. Proprietorships, individuals, HUFs, and partnership firms can skip DSC and use EVC (OTP-based) or E-Sign (Aadhaar-based) instead.

Class 3 DSC is the only accepted type in 2026  Class 2 was discontinued from January 2021. DSC price starts at Rs 826 for a signing-only certificate with USB token.

To register DSC on GST portal: Login → My Profile → Register/Update DSC → Connect USB token → Select PAN → Enter password → Submit.

Applying for GST registration and confused about whether you need a Digital Signature Certificate? You are not alone. Thousands of business owners, especially proprietors and new company directors, search for this every day. This guide covers who needs DSC, who does not, how to get one, how much it costs, and how to register it on the GST portal - all in one place.

 

What is a Digital Signature Certificate (DSC) in GST?

A Digital Signature Certificate (DSC) is a secure digital key issued by government-authorized Certifying Authorities (CAs) under the IT Act 2000. In GST, it acts as your electronic signature  used to sign and submit registration applications, returns, amendments, refund claims, and notices on the GST portal (gst.gov.in).

DSC is stored on a FIPS-certified USB token (hardware device). When you plug the token and enter your password, the GST portal recognizes your identity and accepts the submission as legally valid and tamper-proof.

Key fact: Only Class 3 DSC is valid for GST in 2026. Class 2 certificates were permanently discontinued by the Controller of Certifying Authorities (CCA) from January 1, 2021. If someone offers you a Class 2 DSC, do not accept it.

 

Is DSC Compulsory for GST Registration? (Who Needs It and Who Does Not)

DSC is mandatory for Companies (Private Limited, Public Limited, OPC) and Limited Liability Partnerships (LLPs) for GST registration and all subsequent filings.

DSC is optional for Proprietorships, Individuals, HUFs, Partnership Firms, and Trusts. These entities can use EVC (OTP on registered mobile/email) or E-Sign (Aadhaar OTP) instead.

Who Must Have DSC for GST (Mandatory)

• Private Limited Company -  DSC of director/authorized signatory required

• Public Limited Company -  DSC mandatory for all filings

• One Person Company (OPC) -  DSC required

• Limited Liability Partnership (LLP) -  DSC of designated partner required

• Foreign Company / Foreign LLP -  DSC mandatory

Who Can Skip DSC for GST (EVC or E-Sign Allowed)

• Sole Proprietorship -  EVC or E-Sign is sufficient. DSC not required.

• Individual Taxpayer -  EVC or Aadhaar-based E-Sign works

• Hindu Undivided Family (HUF) -  EVC allowed for Karta

• Partnership Firm -  EVC or E-Sign can be used

• Trust / Association -  EVC is accepted

Important 2026 update: As per recent GSTN updates, even companies can now optionally use EVC for certain filings. However, DSC remains the recommended and more secure method for companies and LLPs, and many officers still prefer it for new registrations.

 

Is Digital Signature Mandatory for GST Invoice?

No. A digital signature is NOT mandatory on GST invoices for most businesses. Regular GST invoices can be issued without DSC.

However, if your business is covered under the e-invoicing mandate (aggregate turnover above Rs 5 crore), your invoices must be registered on the Invoice Registration Portal (IRP). The IRP signs them digitally on your behalf using its own certificate  you do not need a personal DSC for this.

DSC is only required when you submit forms, returns, and applications on the GST portal - not on invoices issued to your customers. If you receive a GST notice, you will also need DSC (or EVC) to submit your reply online.

 

What Class of DSC Is Required for GST in 2026?

Only Class 3 DSC is accepted on the GST portal in 2026. There are two types relevant to GST:

• Class 3 Signing DSC - Used for signing GST returns, registration forms, notices, refunds. This is what most GST filers need. Price starts at Rs 826.

• Class 3 Sign + Encrypt (Combo) DSC -  Used for signing and encrypting documents. Needed for government tenders and specialized portals. Not required just for GST filing. Price starts at Rs 1,652.

For GST registration and return filing, Class 3 Individual Signing DSC is sufficient. Do not pay extra for Combo unless you need it for tenders.

 

DSC Price for GST Registration in 2026

Class 3 DSC price in India starts at Rs 826 for a 1-year signing certificate. A USB token (required to store the certificate) costs approximately Rs 767 separately, or is bundled with some packages.

The final cost depends on three things: validity period, certificate type, and the Certifying Authority you choose.

 

 

Prices shown are approximate starting rates from licensed CAs like eMudhra, Capricorn, VSign, and XtraTrust. For GST registration only, buy a 2-year Class 3 Signing DSC  it reduces renewal hassle and costs less per year.

Top Certifying Authorities in India: eMudhra, Capricorn CA, VSign, XtraTrust, Pantasign, Speedsign, ID Sign. All are licensed by the Controller of Certifying Authorities (CCA) under the Ministry of Electronics and IT.

 

How to Get a DSC for GST Registration  Step by Step

1. Go to any licensed CA website (eMudhra, Capricorn, or others listed on mca.gov.in).

2. Select Class 3 Individual Signing DSC. Choose validity (2 years recommended for GST).

3. Fill the application form  name, PAN, Aadhaar, mobile, email, address.

4. Complete Aadhaar eKYC or upload identity and address proof documents.

5. Record a short video verification as required by CCA rules.

6. Make payment. DSC is approved and issued digitally within 15-60 minutes.

7. Download your DSC onto the FIPS-certified USB token provided.

Documents needed: PAN card, Aadhaar card, passport-sized photograph, address proof. Aadhaar must be linked to your mobile number for OTP-based eKYC. Link your Aadhaar mobile at UIDAI official portal.

 

How to Register DSC on GST Portal for New Registration

Pre-requisites: Valid Class 3 DSC with USB token, emSigner utility installed (free download from GST portal), and your GST login credentials or ARN.

You can check your application status anytime using the GST ARN Status Check tool on gstregistration.co.

1. Login to gst.gov.in using your credentials.

2. Click on your username (top right corner) and select "My Profile" from the dropdown.

3. Under Quick Links, click "Register/Update DSC".

4. Plug in your DSC USB token. Open the emSigner utility (must be running in background).

5. Select your PAN from the authorized signatory dropdown.

6. Choose the DSC certificate from the list shown in emSigner.

7. Enter your USB token password and click Submit.

8. "Your DSC has been successfully registered" message confirms completion.

Common error: "emSigner not detected"  this means the utility is not running. Open it from your Windows start menu as Administrator, then refresh the browser page and try again.

Browser requirement: Internet Explorer 10+, Chrome 49+, or Firefox 45+. Chrome works best in 2026.

 

How to File GST Without DSC  EVC and E-Sign Explained

Proprietors, individuals, HUFs, and partnership firms can file GST returns without DSC using EVC (Electronic Verification Code). EVC is a free OTP sent to your registered mobile number and email when you submit a return  no hardware, no cost, no USB token needed.

Companies and LLPs must use DSC (or EVC where recently permitted). E-Sign (Aadhaar OTP) is a third option for Aadhaar-linked individuals.

EVC  How to File GST Return Without DSC

1. Complete filling all details in your GST return on the portal.

2. Click "Proceed to File" at the final step.

3. Select the Authorized Signatory from the dropdown.

4. Click "File with EVC" button.

5. An OTP is sent to your registered mobile number and email.

6. Enter the OTP and click Submit. Your return is filed instantly.

EVC is completely free. No annual renewal, no USB token, no extra software. For proprietors and small businesses, EVC is the most practical option for day-to-day GST filing. See our guide on GST documents required for proprietorship to prepare before you apply.

DSC vs EVC vs E-Sign  Quick Comparison

 

*As per recent GSTN update, companies can now optionally use EVC for certain filings, though DSC remains preferred for new registrations.

 

How to Validate Digital Signature in GST Certificate PDF

After GST registration is approved, your GST certificate (Form GST REG-06) is digitally signed by the GST officer. You can validate this signature to confirm the certificate is genuine and untampered.

How to Validate DSC in GST Certificate Online

1. Download your GST certificate PDF from gst.gov.in → Services → User Services → View/Download Certificates.

2. Open the PDF in Adobe Acrobat Reader (free download).

3. Click on the digital signature panel visible at the top or bottom of the certificate.

4. Click "Validate Signature" or right-click on the signature → "Validate Signature".

5. Adobe will show "Signature is valid" with a green checkmark if the certificate is genuine.

6. Click "Signature Properties" to see the officer's certificate details, issue date, and validity.

How to validate via USB Token tool: Open your DSC token utility software (ePass2003 or similar). Login with token password. Click on your certificate name → Details tab. Validity dates and certificate status are displayed.

Frequently Asked Questions

Q1: Is DSC compulsory for GST registration for proprietorship?

A: No. DSC is not mandatory for proprietorship GST registration. Proprietors can use EVC (OTP on registered mobile and email) or E-Sign (Aadhaar OTP) instead of DSC. DSC is optional for proprietors and can be used for added security.

Q2: Is DSC required for GST registration for a company?

A: Yes. DSC is mandatory for Private Limited Companies, Public Limited Companies, OPCs, and LLPs for GST registration and return filing. The DSC must belong to the authorized signatory registered on the GST portal.

Q3: What is EVC in GST registration?

A: EVC stands for Electronic Verification Code. It is a free OTP sent to the registered mobile number and email of the authorized signatory on the GST portal. Proprietors, individuals, HUFs, and partnership firms use EVC to authenticate returns and forms without needing a DSC or USB token.

Q4: Can I use one DSC for multiple GSTINs?

A: Yes. One DSC belonging to an authorized signatory can be registered and used across multiple GSTINs, provided the name and PAN of the signatory match across all registrations on the GST portal.

Q5: How much does DSC cost for GST in 2026?

A: Class 3 Individual Signing DSC starts at Rs 826 for 1 year. A USB token costs approximately Rs 767 separately. For GST use, a 2-year signing-only DSC (approximately Rs 996 + token) is the most cost-effective choice. Prices vary by Certifying Authority.

Q6: How do I validate digital signature in GST certificate PDF?

A: Open the GST certificate PDF in Adobe Acrobat Reader. Click on the digital signature panel. Select "Validate Signature." A green checkmark confirms the certificate is genuine and issued by the GST department without tampering.

 

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About the Author

Rohit Kumar Jaluthariya  |  SEO and Content Strategist at LegalDev

Rohit is an SEO and Content Strategist at LegalDev, working on GST compliance content for gstregistration.co. He holds a B.Com degree and has hands-on experience across SEO, content strategy, and Meta Ads. Rohit specialises in translating complex GST portal updates and e-way bill rules into practical, easy-to-follow guides for Indian businesses, and has produced in-depth compliance content covering e-way bills, ITC, GST returns, and registration processes for the gstregistration.co blog.