What is SignSetu?
SignSetu is India's first pay-per-use Aadhaar eSign platform. You can upload any PDF document, add signers, and get it digitally signed using Aadhaar OTP, all in under 2 minutes. No subscription, no DSC token, no software installation required.
How does Aadhaar eSign work on SignSetu?
Upload your PDF → add signers with their name, email, and phone number → signers receive an email invitation → they verify their identity using Aadhaar OTP (sent to their Aadhaar-linked mobile) → the document is cryptographically signed by eMudhra (a CCA-licensed Certifying Authority) → all parties receive the signed PDF.
How long does it take to sign a document?
The entire process takes under 2 minutes per signer. Upload takes seconds, Aadhaar OTP verification takes about 30 seconds, and the signed document is generated instantly.
What do I need to use SignSetu?
You need: (1) A PDF document to sign, (2) An Aadhaar number for each signer, (3) Access to the mobile number linked to each signer's Aadhaar (for OTP verification). No special hardware, software, or USB tokens are required.
Can multiple people sign the same document?
Yes. You can add multiple signers to a document. Each signer receives an individual email invitation and signs in the order you specify. You can track who has signed and who hasn't from your dashboard.
What happens after all parties sign?
Once all signers have completed their Aadhaar eSign, the fully signed PDF is generated with a cryptographic signature and timestamp from the Certifying Authority. All parties receive the signed document via email. You can also download it from your SignSetu dashboard.
What is the difference between Digital Signature (DSC), Electronic Signature, and Aadhaar eSign?
A Digital Signature Certificate (DSC) uses a USB token issued by a Certifying Authority, required for MCA filings, ITR, and GST. An Electronic Signature is a broader legal category under Section 3A of the IT Act. Aadhaar eSign is a type of electronic signature that uses Aadhaar OTP for identity verification, no USB token needed, valid for most private and business documents.
Which documents CANNOT use Aadhaar eSign?
Under
Schedule I of the IT Act, 2000, the following cannot use electronic signatures: wills and testaments, negotiable instruments (cheques, promissory notes), powers of attorney for immovable property sale, trusts created under the Indian Trusts Act, and registered sale deeds for immovable property.
Is Aadhaar eSign valid for rent agreements?
Yes. Rent agreements can be signed using Aadhaar eSign. They are legally valid as electronic contracts. However, some states require physical registration for agreements above a certain tenure (typically 11 months). Check your state's specific requirements.
Is Aadhaar eSign accepted by banks and government bodies?
Yes. Aadhaar eSigned documents are accepted by most banks, insurance companies, NBFCs, and government bodies for KYC, loan applications, account opening, and other documentation. The signature carries the same legal weight as a handwritten signature under Section 5 of the IT Act.
How much does it cost to eSign a document?
₹15 per signature. If a document needs 2 signers, it costs ₹30 (2 credits). No monthly subscription, no hidden fees, no platform charges. GST is included. See our
pricing page for details.
How do credits work?
You purchase credits from your
dashboard. Each credit = one Aadhaar eSign on a document. Credits are deducted when a document is sent for signing. Minimum purchase is 10 credits (₹150).
Is there a free trial?
We don't offer a free trial because our pricing is already pay-per-use at ₹15 per signature, there's no subscription to trial. You can sign up for free and buy credits only when you need to sign a document.
What payment methods do you accept?
We accept UPI, credit cards, debit cards, net banking, and wallets via Razorpay. All payments are processed securely in INR.
Do credits expire?
No. Your credits never expire. Use them whenever you need, today or a year from now.
What file formats are supported?
Currently, SignSetu supports PDF documents. Upload your document in PDF format to begin the signing process.
What is the file size limit?
The maximum file size for a document is 10 MB.
What types of documents can I sign?
You can sign rent agreements, NDAs, offer letters, appointment letters, vendor contracts, affidavits, consent forms, partnership deeds, loan agreements, insurance forms, HR documents, and more. The only exceptions are documents listed in Schedule I of the IT Act (wills, negotiable instruments, property sale deeds, etc.).
Can I sign non-English documents?
Yes. The document content can be in any language. The Aadhaar eSign process and the digital signature certificate are language-independent, they authenticate the signer's identity, not the document's language.
How do signers receive the signed document?
Once all parties have signed, the signed PDF is automatically emailed to all signers. The document owner can also download it from the SignSetu dashboard at any time.
Is my Aadhaar data safe?
SignSetu does not store your Aadhaar number. The Aadhaar OTP verification is handled directly by UIDAI through our eSign provider eMudhra (a CCA-licensed Certifying Authority). We only receive the signed document, not your Aadhaar details.
Who can see my documents?
Only the document owner and the designated signers can access a document. Documents are stored securely on AWS with encryption. No one else, including SignSetu staff, can view your document content.
How is a signed document verified?
Every signed document includes a cryptographic signature from the Certifying Authority (eMudhra). The signature embeds the signer's identity (as verified by Aadhaar), the timestamp of signing, and a tamper-detection hash. Any modification to the document after signing invalidates the signature, which you can check in Adobe Reader or via the CCA verification portal.
How long are documents stored?
Signed documents are stored securely on our servers and can be downloaded from your dashboard at any time. We recommend downloading and storing your own copies for long-term record-keeping.
Is the connection encrypted?
Yes. All data transmitted between your browser and SignSetu is encrypted using TLS (HTTPS). Documents are stored encrypted at rest on AWS S3.
I'm not receiving the Aadhaar OTP. What should I do?
Ensure your mobile number is linked to your Aadhaar. The OTP is sent by UIDAI to your Aadhaar-registered mobile number, not any other number. If your number has changed, update it at your nearest Aadhaar enrollment centre or via the mAadhaar app.
My Aadhaar is linked to an old mobile number. Can I still sign?
No. The OTP is sent to the mobile number registered with UIDAI. You must update your Aadhaar-linked mobile number first. Visit
uidai.gov.in or your nearest Aadhaar centre to update.
My document upload failed. What should I do?
Check that your file is a valid PDF and under 10 MB. If the issue persists, try a different browser or clear your browser cache. Contact us at contact@mail.signsetu.in if the problem continues.
I didn't receive the signed document. Where is it?
Check your spam/junk folder. The signed document is emailed to all signers once all parties have signed. You can also download it from your SignSetu dashboard under 'Your Documents'.
Can I cancel or revoke a signature after signing?
No. Once a document is digitally signed with Aadhaar eSign, the signature is permanent and cannot be revoked. This is by design, the signature's legal validity depends on its permanence. If you need to void a signed agreement, the parties must execute a separate cancellation document.
Can NRIs use Aadhaar eSign?
Yes, if your Aadhaar is linked to an active Indian mobile number that can receive OTP. The mobile number must be reachable at the time of signing.
Which documents can NRIs sign using Aadhaar eSign?
NRIs can sign any document that is eligible for Aadhaar eSign, rent agreements, powers of attorney (for movable property), business contracts, affidavits, consent forms, etc. The same exclusions under Schedule I of the IT Act apply.
Do I need to be physically present in India to sign?
No. Aadhaar eSign works online from anywhere in the world. You just need access to the OTP sent to your Aadhaar-linked Indian mobile number. If you're using an Indian SIM abroad, ensure it can receive SMS.
My Aadhaar is linked to an old Indian number that I no longer use. What can I do?
You need to update your Aadhaar-linked mobile number. This can be done at an Aadhaar enrollment centre in India, or through a family member using the
mAadhaar app with biometric verification. Unfortunately, there is currently no way to update Aadhaar mobile number from outside India without visiting a centre.