What is a Digital Signature Certificate?
A Digital Signature Certificate (DSC) is the electronic equivalent of a handwritten signature, issued by a Certifying Authority (CA) licensed by the CCA. It binds a person identity to a cryptographic key pair used to sign documents digitally.
Why only Class-3 matters now
Since 2021, the CCA has consolidated to Class-3 for most use cases. Class-1 and Class-2 have been phased out.
- Class-3 DSC: highest security — issued after in-person or video verification. Used for MCA filings, GST, IT returns, e-tenders, EPFO, ICEGATE, trademark filings, DGFT.
- Document Signer Certificate: used by organisations to programmatically sign PDFs at scale.
Who needs a DSC?
- Directors of companies for ROC filings, SPICe+, DIR-3 KYC
- Designated Partners of LLPs
- Business owners filing GST, IT, EPF returns electronically
- CAs, CSs, Cost Accountants for audit filings
- Bidders in e-tenders
- Importers / exporters on ICEGATE and DGFT portals
Documents needed
For individuals
- PAN card
- Aadhaar / passport / voter ID / DL
- Passport-size photo
- Email and mobile
For organisations
- Authorised signatory individual KYC
- Incorporation certificate / partnership deed
- GSTIN / PAN of entity
- Authorisation letter
Application process
- Choose a licensed CA: eMudhra, Sify, NSDL e-Gov, Capricorn, VSign
- Fill the online application form
- Upload documents
- Complete Video KYC — a 2-minute verification call
- Pay the fee
- Receive the DSC on a FIPS 140-2 USB token
Validity
Class-3 DSCs are issued for 1, 2, or 3 years. Renew before expiry — filings on expired DSCs will fail.
Cost
- Individual Class-3 (sign only): ₹500–₹1,500
- Individual Class-3 (sign + encrypt): ₹1,200–₹2,500
- Organisation Class-3: ₹1,500–₹3,500
- USB token cost: ₹300–₹800 (one time)
Security best practices
- Never share your USB token or PIN
- Lock the token with a strong PIN (min 8 characters)
- Store the token securely when not in use
- Revoke immediately if lost or compromised
- Back up encryption keys if applicable
Need a DSC in 24 hours? Apply via Bizotic.
