Most documents you sign are agreements: two or more parties, mutual promises, consideration flowing both ways. An affidavit is not that. It has one author, makes no promises, and creates no obligations on anyone else. Its entire function is to put a set of facts on record in a form that an institution will accept — and to attach personal consequences if those facts are untrue.
That difference explains almost everything else about how affidavits are handled, including why the notarisation question comes up in a way it never does for a rent agreement or an NDA.
What an affidavit actually is
An affidavit is a written statement of facts that the person making it, called the deponent, swears or affirms to be true. Traditionally this is done before someone authorised to administer an oath — a notary public, oath commissioner, or in some contexts a magistrate — who then attests the document.
Three features follow from that:
- First person, personal knowledge. An affidavit says "I state that…", not "the parties agree that…". You should only depose to facts you actually know, and where something is believed rather than known, say so.
- No counterparty. Nobody signs back. There is nothing to negotiate.
- Consequences for untruth. A false sworn statement is treated seriously in most legal systems. This is the reason affidavits are accepted as evidence of facts that would otherwise need documentary proof.
The twelve affidavit types people actually request
Affidavits look endlessly varied, but in practice requests cluster into a small number of purposes. WeSignDeal supports the following types, which between them cover most everyday needs:
- Name change — recording a change of name and confirming both the former and new name, usually to update records with banks, employers, passport authorities, or educational institutions.
- Address proof — confirming current residential address where a utility bill or lease is unavailable or not in the deponent's name.
- Date of birth — supporting a date of birth where records are inconsistent or a birth certificate is unavailable.
- Marriage — confirming the fact of marriage, commonly used for name updates, insurance, or dependent registrations.
- Income — stating income from sources that do not generate conventional payslips, for scholarships, subsidies, or admissions.
- Financial — a broader statement of financial position, assets, or liabilities where an authority requires disclosure.
- Lost document — recording the loss of a certificate, mark sheet, policy, licence, or identity document, usually a precondition to obtaining a duplicate.
- General purpose — a flexible format for factual statements that do not fit a standard category.
- One and the same person — confirming that differing versions of a name across documents refer to a single individual.
- Gap year — explaining a documented break in study or employment.
- Single status — confirming unmarried status, frequently required for marriage registration abroad or certain visa processes.
- Affidavit of support — undertaking to support another person financially, common in visa, admission, and sponsorship contexts.
Choosing the right type matters more than it appears. Institutions often have a fixed expectation of what a particular affidavit should contain, and a general-purpose statement where a specific type was expected is a common reason for rejection.
What belongs in the document
Formats vary by jurisdiction, but a well-drafted affidavit almost always contains the following:
- Title identifying what kind of affidavit it is.
- Deponent identification — full name as it appears on identity documents, parentage or spouse name where conventional, age, occupation, and full address.
- Numbered statements of fact, one point per paragraph, in plain declarative language.
- The purpose — why the affidavit is being made and to whom it is being submitted.
- A verification clause confirming the contents are true to the deponent's knowledge, and distinguishing anything stated on information or belief.
- Place, date, and signature of the deponent.
- Attestation block for the notary or oath commissioner, where required.
Two drafting habits are worth adopting. Keep each numbered statement to a single fact — combined paragraphs are harder for an official to verify and easier to challenge. And avoid absolute language you cannot support; "to the best of my knowledge" exists for good reason, and using it honestly is stronger than overclaiming.
Stamp duty on affidavits
In India, affidavits commonly need to be executed on stamp paper or with an eStamp certificate. The amount is usually a small fixed value set by the state rather than a percentage of anything, but both the value and the requirement vary — by state and sometimes by the affidavit's purpose.
Where stamp duty applies, WeSignDeal can handle it in more than one way. For supported document types and states, the platform procures a Government eStamp and merges the certificate into the final PDF. Where self-upload is enabled for your case, you can supply your own stamp paper or certificate instead. Either way, the amount payable is determined by the applicable state schedule, and confirming the correct value for your affidavit and jurisdiction remains your responsibility. Our eStamp and stamp duty primer explains how the two paths differ and what under-stamping actually risks.
The notarisation question, answered honestly
This is where affidavits diverge from every other document on the platform, and it deserves a straight answer rather than a marketing one.
What can be done digitally: drafting the affidavit in the correct format for its type, reviewing and revising it, verifying the deponent's identity with a live selfie and uploaded identity documents, obtaining an eStamp or attaching a self-uploaded one, applying an electronic signature such as Aadhaar eSign, and producing a final PDF with a complete audit trail.
What may still be required offline: the act of swearing the affidavit before a notary or oath commissioner, and their physical attestation, seal, and register entry. Whether this is needed depends entirely on the authority receiving the affidavit. Some accept a properly stamped and electronically signed affidavit. Many still ask for notarial attestation, and some specify a particular category of attesting officer.
The practical approach: ask the receiving authority what they accept before you prepare the document. Preparing the affidavit digitally is still worth doing — you get correct formatting, verified identity, the stamp handled, and a clean PDF — but do not assume the digital route removes an attestation step that a specific institution insists on. WeSignDeal is a technology and document facilitation platform, not a law firm or a notary, and it cannot administer an oath on anyone's behalf.
How the workflow runs on WeSignDeal
- Choose the affidavit type from the twelve supported categories, so the format matches what institutions expect.
- Enter deponent details and the facts to be deposed, in your own words.
- Upload supporting documents — identity proof, and anything that substantiates the facts stated.
- Complete verification through a secure link: a live selfie and identity document upload, recorded against the document.
- Handle stamp duty — Government eStamp where supported, or self-upload where enabled for your case.
- Sign electronically with Aadhaar eSign.
- Download the PDF, with the stamp certificate as page one and the audit trail retained.
- Take it for attestation if the receiving authority requires notarisation.
One workflow detail matters for affidavits specifically: the content locks once verification links are issued and payment is completed. Because affidavit facts are often copied directly from identity documents, check every spelling, date, and address against the source document before that point. A name spelled two ways is precisely the problem a "one and the same person" affidavit exists to solve, and you do not want to need one because of a typing error in the first affidavit.
How it works covers the sequence in more detail, and the FAQ Centre answers the specific questions on verification, stamping, and signing.
Mistakes that get affidavits rejected
- Name mismatch between the affidavit and the identity document attached to it.
- Wrong stamp value for the state, or no stamping where the state requires it.
- Vague statements — "I have been residing in the said city for a long time" rather than a date.
- Facts outside personal knowledge stated as if known first-hand.
- Wrong affidavit type for what the institution asked for.
- Missing attestation where the receiving authority requires it.
- Inconsistency with earlier submissions — officials do compare, and a contradiction is worse than the original gap.
Related reading
Prepare an affidavit online, or browse every document type on Do Agreement Online.
General information only, not legal advice. WeSignDeal is a technology and document facilitation platform, not a law firm and not a notary. Affidavit format, stamp duty, and attestation requirements vary by jurisdiction and by the authority receiving the document — confirm requirements locally, and take professional advice where the affidavit matters.
