Affidavit · Illinois
Illinois Affidavit Forms (2026)
A Illinois affidavit is a written statement of facts that you sign under oath. The certification of 735 ILCS 5/1-109 can be used for documents in court proceedings; for use outside court, sign before a notary.
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Choose your affidavit
- Affidavit of ResidenceProof of address for a school, DMV, utility or bank.
- Small Estate AffidavitCollect a small estate without full probate, where the state allows it.
- Affidavit of HeirshipSworn family history identifying the heirs of someone who died.
- Affidavit of Financial SupportPromise to support a student, relative or tenant (not USCIS Form I-864).
- Identity Theft AffidavitSupplemental sworn statement to send with your FTC Identity Theft Report.
- Lost Title AffidavitSupporting statement plus a guide to the DMV duplicate title form.
Signing an affidavit in Illinois
- Notary or declaration?
- The certification of 735 ILCS 5/1-109 can be used for documents in court proceedings; for use outside court, sign before a notary.
- Unsworn option in our forms
- Available for most versions, if the recipient accepts it (never for an affidavit of heirship).
Official source: Illinois Code of Civil Procedure, 735 ILCS 5/1-109 · Last reviewed: October 2026
DoneDoc provides self-help forms and is not a law firm. We recommend having your document reviewed by a licensed attorney in your state before signing.
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