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Affidavit Meaning

Quick Definition

An affidavit is a written statement of facts that a person, called the affiant, swears or affirms is true, usually before a notary or other authorized officer. Affidavits are commonly used to support court filings and other legal proceedings.

Example Usage

“She signed an affidavit describing the events she personally witnessed, then swore to the statement before a notary.”

What Does Affidavit Mean?

An affidavit is a written statement of facts that a person swears or affirms is true. The person making the statement is called the affiant. Traditionally, the affiant signs the affidavit after taking an oath or affirmation before a notary public or another officer authorized to administer oaths.

Affidavits are used to put factual information into a formal written record. They may support a court motion, establish facts for an application, document identity or ownership, verify events, or provide evidence in another legal or administrative process. The exact requirements depend on the jurisdiction, court, agency, and purpose of the affidavit.

What Is Usually Included in an Affidavit?

An affidavit should clearly identify who is making the statement and separate facts from assumptions or argument. Depending on the use, an affidavit may include:

  • The affiant’s full name and identifying information relevant to the matter.
  • A statement explaining how the affiant knows the facts being described.
  • Numbered paragraphs setting out the facts in a clear sequence.
  • References to documents or exhibits when supporting records are attached.
  • A statement that the contents are sworn or affirmed to be true.
  • The affiant’s signature and date.
  • A notarial jurat or other required certification showing that the oath or affirmation was administered.

Not every affidavit needs the same format. Court rules, statutes, and agency forms may require specific wording, captions, signatures, exhibits, or notarization procedures.

What Is an Affiant?

The affiant is the person who makes and swears to the affidavit. The affiant is responsible for the truthfulness of the factual statements in the document. An affidavit is not made more reliable simply because it is notarized. A notary generally verifies the signer and administers the required oath or affirmation; the notary does not independently prove that every factual statement is correct.

How Are Affidavits Used in Court?

Affidavits can be used in many stages of litigation, including motions, applications, requests for emergency relief, and other proceedings where written evidence is permitted. Their legal effect depends on the rules governing the particular proceeding.

For example, in federal summary-judgment practice, an affidavit or declaration used to support or oppose a motion must be based on personal knowledge, set out facts that could be admissible in evidence, and show that the person making the statement is competent to testify about those matters.

An affidavit can also be challenged. Another party may dispute the facts, object to inadmissible material, present contrary evidence, or question whether the affiant actually has personal knowledge of what was stated.

Affidavit vs. Declaration

An affidavit and a declaration can serve similar purposes, but they are not always the same document. An affidavit is traditionally sworn or affirmed before a notary or other authorized officer. A declaration under penalty of perjury may be signed without notarization when the applicable law allows it.

Under federal law, 28 U.S.C. § 1746 allows many matters that could be supported by a written sworn affidavit to instead be supported by a dated, signed unsworn declaration made under penalty of perjury. The statute contains exceptions, so the correct format depends on the document and proceeding.

Is an Affidavit the Same as Testimony?

An affidavit is a form of sworn written evidence, but it is not identical to live testimony. Live testimony is given before a court or other tribunal and may be subject to immediate questioning or cross-examination. An affidavit is prepared in writing outside that setting and may be accepted, limited, challenged, or supplemented depending on the applicable rules.

Affidavit Example

Suppose a business asks a court to confirm that a notice was delivered on a certain date. A person who personally delivered the notice might sign an affidavit describing when, where, and how delivery occurred. The affidavit creates a sworn written account that the court can evaluate along with the rest of the evidence.

The important point is that an affidavit is more than an ordinary written statement. It is a formal factual statement made under oath or affirmation, and the required form can vary by jurisdiction and legal purpose.

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