Is a DSC compulsory for filing ITR?

For companies, LLPs and firms, yes, the e-filing portal requires a Digital Signature Certificate. Individual salaried taxpayers can usually use Aadhaar-based e-verification instead.

Which DSC is needed for income tax filing?

A Class 3 Digital Signature Certificate. It is used to submit the return and to complete e-verification on behalf of the entity.

Can a chartered accountant file using my DSC?

Yes. Your CA or authorised representative can file using your DSC once the certificate is installed on the machine they file from, or using the token itself.

Can I use one DSC for both GST and Income Tax?

Yes. A single Class 3 certificate can be used across GST, Income Tax, MCA and e-tendering portals.

What happens if my DSC expires before I file my return?

You will not be able to submit the return until a valid certificate is in place. Late filing attracts interest and possible penalty, so we send a reminder before your expiry date.

How quickly can I get a DSC during filing season?

The same working day in most cases. During peak filing periods we recommend applying a few days ahead rather than on the deadline itself.

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Issuing now · Same-day deliveryIncome Tax

Digital Signature Certificate for Income Tax e-Filing

Class 3 DSC for Income Tax e-filing: company and firm ITR, tax audit reports, TDS returns and e-verification. Same-day paperless issuance.

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New FIPS 140-3 compliant USB token · Free installation support · GST invoice included

Class 3 for ITR filingSame-day issuancePaperless eKYCSignatory certificates

500+

Customers served

15 min

Average issuance

FIPS 140-3

Compliant USB token

100% Paperless

Paperless process

Authorised RA

Registration Authority

Why It Matters

Made for filing season

Companies, LLPs and firms must sign their Income Tax returns with a Class 3 Digital Signature Certificate, as Aadhaar-based e-verification is not available to entities. The same certificate signs tax audit reports, TDS and TCS returns, and responses to notices on the e-filing portal. TNIT DSC issues Class 3 certificates for authorised signatories, with organisation certificates where the entity itself signs.

Accepted on the e-filing portal

Class 3 certificates issued through a licensed Certifying Authority and used for ITR submission and e-verification by entities.

Covers returns and audit reports

ITR filing, tax audit reports under Section 44AB, TDS and TCS returns and revised returns all use the same certificate.

Issued to the right signatory

The certificate is issued in the name of the person authorised to sign, with the PAN matching your records so the return is accepted.

Ready before the deadline

Certificates are issued the same working day, so a last-minute expiry never forces a late filing and the interest that follows.

Support for audit firms

If your CA or audit firm files on behalf of several clients, we handle multiple certificates and keep expiry dates tracked for each.

Two and three year options

Choose longer validity to cover successive filing cycles and avoid renewing in the middle of assessment proceedings.

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Going digital shouldn't be difficult. Here's how we do it.

Our streamlined 3-step process eliminates the headache of paperwork and long wait times. Everything is done online, verified by experts.

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Select Your DSC

Choose the validity and type of certificate based on your specific use case. Our pricing is transparent and upfront.

Paperless KYC

Complete your Aadhaar-based or PAN-based video KYC online in under 5 minutes from your mobile or laptop.

Download & Use

Once approved, download your DSC into your new FIPS 140-3 compliant USB token, issued as per Govt. of India guidelines. You're ready to sign documents legally.

Checklist

Documents you need

PAN card of the authorised signatory

Aadhaar card for eKYC verification

Company or firm PAN

Certificate of incorporation or partnership deed

Proof of authorisation to sign, where requested

Not sure what applies to you? See the full document checklist

The Difference

TNIT DSC vs buying it elsewhere

What you get	TNIT DSC	Typical reseller
Same-day issuance
100% paperless Aadhaar eKYC
USB token setup and driver install
Help choosing the right certificate
Single point of contact end to end
Renewal reminders before expiry