A Digital Signature Certificate (DSC) is an electronic equivalent of a physical signature or stamp. DSC is used to sign documents digitally in a legally binding manner under the Information Technology Act 2000. For business compliance in India — MCA filings, GST, income tax, customs, and e-tendering — DSC is mandatory.
Types of DSC in India
Class 3 DSC (Most Common for Business):
DGFT DSC:
Document Signer Certificate:
- ▸Identity verified by a Certifying Authority (CA)
- ▸Used for: MCA company filing, GST, income tax (CA, companies), e-tendering, DGFT
- ▸Validity: 1 or 2 years
- ▸Cost: ₹800–₹2,000 per year
- ▸Specific to DGFT portal for import-export licence
- ▸Based on IEC number
- ▸For bulk signing of invoices, certificates, reports
- ▸Used by companies issuing large volumes of signed documents
When is DSC Mandatory?
- ▸MCA Company Registration: DSC of all proposed directors (SPICe+ form)
- ▸MCA Annual Filing: Directors must sign AOC-4 and MGT-7 with DSC
- ▸GST: Certain categories of taxpayers must use DSC (companies, LLPs) for GST registration and returns
- ▸Income Tax: Companies and firms must use DSC for ITR filing; audit report (3CA/3CB) must be signed with CA's DSC
- ▸E-Tendering: Government portals (GeM, CPPP, eProcure) require DSC
- ▸MCA DIR-3 KYC: Director KYC e-form requires DSC
- ▸DGFT: IEC registration and modification
How to Apply for DSC
Step 1: Choose a licensed Certifying Authority:
Step 2: Submit documents online:
Step 3: Complete video verification with CA officer (video KYC is standard now)
Step 4: DSC issued digitally via email within 1–2 days. Download and install on USB token.
- ▸eMudhra (emudhra.com)
- ▸Sify Technologies
- ▸NIC (National Informatics Centre)
- ▸NSDL
- ▸Capricorn Identity Services
- ▸PAN Card
- ▸Aadhaar Card (for Aadhaar-based verification)
- ▸Photograph
- ▸Email and mobile number
Storing and Using DSC
USB Token:
Using DSC:
- ▸DSC is stored on a hardware USB token (like a pen drive)
- ▸Private key never leaves the token — cannot be copied
- ▸Most tokens: Gemalto, ePass, WatchData
- ▸Plug USB token into computer
- ▸Install driver software
- ▸When signing a document/form, select your DSC from the token
- ▸Enter PIN (4–8 digit) set during DSC creation
- ▸Document signed digitally
DSC Renewal and Security
- ▸DSC validity: 1 year or 2 years
- ▸Renew before expiry to avoid gaps in filing capability
- ▸Never share DSC PIN with anyone
- ▸If token is lost: Report to Certifying Authority immediately for revocation
- ▸Multiple DSCs can exist on one token
Conclusion
DSC is a one-time investment (₹800–₹2,000/year) that enables fast, paperless compliance across MCA, GST, income tax, and government portals. Biswa Corporate Solutions provides Class 3 DSC procurement, DGFT DSC, and USB token renewal services — delivered digitally within 24 hours.
