Digitally Sign PDFs for Income Tax with Your DSC
Sign audit reports, notice replies, and tax documents with your Class 3 USB-token DSC directly in the browser. The document never leaves your device - only a hash is signed by the token.
No signup required • 100% browser-based • Zero uploads
Key Benefits
Frequently Asked Questions
When is a DSC required for income tax?
Companies must verify returns with a DSC, and audit reports and certain forms filed by professionals require DSC verification on the portal. Beyond portal verification, DSC-signing the underlying PDF documents - replies, certificates, computations - gives recipients cryptographic proof of origin.
Is this the same as e-verifying my ITR?
No. Return verification happens on the e-filing portal through its own DSC or Aadhaar-OTP flow. This tool signs PDF documents themselves, which is useful for notice-reply annexures, CA certificates, and documents you share with clients or authorities.
Do my tax documents get uploaded to sign them?
No. The signature is computed in your browser; only a small hash goes to your USB token through a localhost bridge. Financial statements and computations never travel to any server.
Will the signature be valid in PDF readers?
Yes - signatures follow the PAdES standard and validate in standard PDF readers. Signatures chain to your CA-issued certificate; readers may show the usual trust prompts until the issuing CA is trusted on the verifier's machine.
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Process your files instantly with our free, secure, browser-based tool.
Sign Tax Documents