Digital Signature Certificates (DSCs) are essential for secure online transactions, e-tendering, income tax filing, MCA filings, and property e-auctions. To maintain their legal standing and functionality, understanding your DSC validity period and how to check or renew it is crucial.
A Digital Signature Certificate (DSC) is an electronic credential that verifies the identity of an individual or organization for online transactions. It’s issued by licensed Certifying Authorities (CAs) and includes information such as:
Holder’s name and public key
Email ID and organization name
Validity period (start and expiry date)
CA’s digital signature
A DSC serves as your digital identity proof, ensuring that signed documents are authentic and tamper-proof.
Typically, a DSC is valid for 1 to 3 years from the date of issuance. Once expired, it becomes inactive, and you cannot use it for signing or authentication.
| DSC Type | Validity Period | Issuing Authority |
|---|---|---|
| Class 2 DSC | 1–2 years | CAs approved by CCA India |
| Class 3 DSC | 2–3 years | CAs (for e-tendering, e-auctions) |
Tip: Always renew your DSC at least 7–10 days before expiry to avoid service interruptions.
Here are the easiest ways to check the validity of your Digital Signature Certificate:
Most Certifying Authorities (like eMudhra, Sify, Capricorn, etc.) provide an online DSC validity check tool.
You just need to:
Visit the CA’s portal
Enter your DSC serial number or USB token ID
View your expiry date instantly
If your DSC is connected via a USB token:
Plug in your DSC token
Open “Internet Options” → “Content” → “Certificates”
Select your DSC → Check the “Valid From” and “Valid To” dates
Many third-party tools also allow you to verify DSC status (Active, Expired, or Revoked) quickly.
Once your DSC expires, follow these steps to renew it:
Visit the CA’s Official Website (e.g., eMudhra, Capricorn, VSign)
Login / Register using your credentials
Choose ‘Renew DSC’ Option
Upload Required Documents – ID proof, PAN, and address proof
Make Payment for renewal charges
Complete Video Verification (if required)
Download and Install your renewed DSC
Renewal usually takes 1–2 working days depending on the CA.
Yes, in most cases, you can reuse your old USB token if it’s compatible and functional.
However, always confirm with your Certifying Authority, as some may require a new token for security reasons.
The cost of a DSC depends on its type, validity, and issuing CA.
| DSC Type | Validity | Approx. Price |
|---|---|---|
| Class 2 DSC | 1–2 years | ₹500 – ₹1,200 |
| Class 3 DSC | 2–3 years | ₹1,200 – ₹2,000 |
| USB Token | — | ₹400 – ₹800 |
💡 Some CAs offer bundled packages with DSC + USB token + installation support.
Choose a licensed Certifying Authority (e.g., eMudhra, Capricorn, Pantasign, VSign).
Select the DSC class and validity period.
Complete KYC and identity verification.
Make payment and receive the USB token by courier or download link.
DSCs are governed by the Information Technology Act, 2000, making digital signatures legally valid and enforceable in India for all online filings, contracts, and e-auctions.
Avoid last-minute transaction failures
Ensure continued access to e-tender and e-filing portals
Maintain legal validity for signed documents
Protect against data breaches due to expired certificates
1. How to check DSC validity online?
→ Visit your Certifying Authority’s website or use a DSC verification tool to see expiry details.
2. How long is a DSC valid?
→ Typically 1 to 3 years, depending on the issuing authority and class.
3. Can I renew DSC after it expires?
→ Yes, you can renew it online via the CA’s portal by submitting documents and payment.
4. Can I reuse my old USB token?
→ Yes, if it’s compatible and still functional. Confirm with your CA before purchase.