How to Write a General Affidavit (And When You Need One)

When you need an affidavit

General affidavits are used across a wide range of legal and personal situations. Common uses include: attesting to someone's identity or residence, establishing facts about an estate when no will exists (small estate affidavit), supporting an insurance claim with a sworn account of events, correcting an error in a public record (name discrepancy, date error), serving as evidence in civil litigation, supporting a loan or financial transaction requiring a sworn certification, and confirming personal or professional facts for immigration purposes.

Courts, government agencies, financial institutions, and insurance companies all accept properly executed affidavits as evidence of the facts stated. The notarization is what converts a written statement into a sworn, admissible document.

Required elements of a valid affidavit

A general affidavit must include: a caption identifying the state and county where it's executed (e.g., "State of Texas, County of Harris"), an identification of the affiant, the person making the statement, including full legal name and address, the body of the affidavit, a clear, factual, first-person statement of the facts you're swearing to, numbered paragraphs for each distinct factual assertion, an attestation clause ("I declare under penalty of perjury that the foregoing is true and correct to the best of my knowledge"), your signature, and a jurat, the notary block where the notary acknowledges the signature and oath.

The jurat typically reads: "Subscribed and sworn before me on this [date], by [your name]. [Notary signature] [Notary commission expiration]." This is the notary's statement that they personally witnessed your signature and administered the oath.

Does it need to be notarized?

In most jurisdictions and for most uses, yes, notarization is what makes an affidavit legally binding and admissible. The notary public verifies your identity (government-issued photo ID is required), confirms you're signing voluntarily, and administers the oath.

Some jurisdictions allow "unsworn declarations under penalty of perjury" as a substitute for notarized affidavits in federal court and some state courts, a signed statement that declares truthfulness under 28 U.S.C. § 1746 can substitute for a notarized affidavit in those contexts. But for estate matters, financial transactions, and government filings, notarization is almost always required.

Remote online notarization (RON) is now legal in most US states, allowing you to get an affidavit notarized via video call. RON notaries are available 24/7 through platforms like Notarize and DocVerify, and their e-notarizations are accepted by most courts and agencies.

What not to put in an affidavit

An affidavit should only contain facts within your personal knowledge. Don't include: speculation or opinion presented as fact, hearsay (what someone else told you) unless you make clear that it's what you heard rather than what you directly know, legal conclusions ("I believe this constitutes breach of contract"), or anything you're not fully certain is true.

The penalty for filing a false affidavit is perjury, a felony in all US states, punishable by prison time. Courts take false affidavits seriously.

Keep the language plain and specific. Courts prefer: "On June 15, 2026, I observed [specific thing]" over "I believe that around mid-June I may have seen something that suggested [vague conclusion]."

If the affidavit is for court use, review your jurisdiction's local rules. Some courts require a specific format, font size, or page length. Your attorney or the court clerk can advise.