Affidavit

An affidavit is a written document that includes a statement of facts made by someone who swears or affirms that the information is true. The person who makes the sworn statement in the affidavit is called the affiant. If the statement in the affidavit is based on the affiant's personal knowledge, then the affiant must sign the written statement in front of a notary public. The notary confirms the person’s identity and that the sworn statement was made under oath or affirmation.

Affidavits are used to provide clear, firsthand information. Because they’re signed under oath before a notary public, they’re legal documents that are acceptable in court proceedings or other official settings. That means if the information in the affidavit form is false, the person who signed it can face legal trouble, such as being charged with perjury.

Business affidavits can help with things like confirming ownership, explaining facts in a dispute, or supporting paperwork for licenses or registrations. Affidavits are also commonly used in real estate transactions and estate matters, and financial affidavits are used in family law like child support and divorce proceedings.

Affidavits help put important information in writing and add a level of trust because they’re sworn legal documents. That makes them useful in various legal proceedings and other situations.

How an affidavit works

An affidavit takes form when an individual writes out facts they have personal knowledge of, then signs the document before a notary public or other authorized official. The notary verifies the affiant’s identity, witnesses the signature, and applies a seal to authenticate the document.

A valid affidavit generally includes the following information:

1. Identification of the affiant: The affiant’s full legal name and any relevant identifying information
2. Statement of facts: A clear, numbered or paragraph-by-paragraph account of the facts the affiant attests to.
3. Signature and jurat: The affiant’s signature and the notary’s certification that the affiant took the oath properly.

Common uses

Affidavits appear across a wide range of legal and personal contexts. Common examples include:

Affidavits appear across a wide range of legal and personal contexts wherever a sworn statement of fact is required.

• Affidavit of identity. Confirms that two names or signatures belong to the same person, often required in financial or real estate transactions
• Affidavit of heirship: Establishes a deceased person's heirs when no will exists, or probate is being avoided
• Affidavit of residence or domicile: Confirms where a person lives, commonly required for school enrollment, government benefits, or legal proceedings
• Small estate affidavit: Allows heirs to claim assets from a modest estate without full probate, depending on state law

Key characteristics

Affidavits generally have the following characteristics:

• Sworn oath or affirmation: The affiant must swear to the truth of the contents, or affirm for those who object to oaths on religious grounds
• Personal knowledge: Statements must be based on facts the affiant knows directly, not hearsay or speculation
• Notarization: A notary public or authorized official must witness the signing and authenticate the document
• Specificity: Vague or conclusory statements weaken an affidavit's legal usefulness

An affidavit that lacks proper notarization or that contains statements beyond the affiant’s personal knowledge may face rejection or receive reduced evidentiary weight.

Affidavit vs. declaration

A declaration is a written statement made under penalty of perjury but without notarization. In federal courts and many state proceedings, courts accept declarations in place of affidavits under statutes such as 28 U.S.C. § 1746. Both carry legal consequences for false statements, but affidavits are required when a notarized document is specifically requested by a court, agency, or institution.

Limitations

A notary verifies identity and witnesses the signature, not the accuracy of the facts stated. A notarized affidavit can still contain false information, which is why perjury penalties exist as a deterrent.

State and court requirements for affidavit language, format, and execution vary. An affidavit prepared for one purpose or jurisdiction may not meet another recipient’s requirements. An affidavit also may not replace expert testimony, authenticated records, or other evidence when applicable law requires them.

Related terms

The following terms and requirements often relate to affidavits:

• Legal notice: A formal communication that informs a person or organization about a legal action or proceeding. An affidavit may help prove that someone properly delivered or published the notice.
• Estate matters: Affidavits may provide evidence about heirs, property, or a person’s right to collect estate assets. Their effect depends on state law.
• Execution requirements: Before using an affidavit in a legal proceeding, ensure it meets the applicable state’s formatting, notarization, and signing requirements.

FAQs about affidavit

Can anyone write their own affidavit?

Yes. There is no legal requirement that an attorney draft an affidavit. However, working with an attorney is advisable when the affidavit will be used in a formal legal proceeding or when state-specific formatting requirements apply.

What happens if statements in an affidavit are false?

Knowingly including false statements exposes the affiant to criminal liability for perjury. The affidavit may also be challenged or disregarded by the court or agency that received it.

Does an affidavit expire?

Affidavits do not have one universal expiration date. However, the recipient may require a recent affidavit or may reject one if the facts are no longer current. The affiant should confirm the recipient’s timing requirements before signing or submitting it.

What should be left out of an affidavit?

Exclude opinions, legal conclusions, hearsay, and any information the affiant did not personally observe or know. Also omit unnecessary personal identifying information beyond what is needed to identify the affiant.