Does an Affidavit Need to Be Notarized?

Not always — but most affidavits used in legal, immigration, or official proceedings do require notarization. An affidavit is a written statement sworn to be true, and notarization is what makes that sworn statement legally credible: the notary administers an oath and verifies the signer's identity before witnessing the signature. Whether notarization is required for a specific affidavit depends more on what it's being used for than on which state you're in.

When an Affidavit Needs to Be Notarized

Affidavits submitted to a court, a government agency, or used as evidence in a legal dispute almost always require notarization — the notarization is what allows the statement to be treated as sworn testimony rather than an unverified written claim. Affidavits used informally between private parties, or as internal documentation, may not require notarization at all, though notarizing them anyway adds a layer of credibility if the document is ever challenged.

Affidavits for Immigration and International Use

Affidavits submitted for immigration purposes — such as affidavits of support or identity — typically require notarization, and if the affidavit will be used in another country, it may also need an apostille or authentication on top of the notary seal. Requirements here are set by the receiving agency or country, not by your home state, so it's worth confirming the exact requirement with whoever is requesting the affidavit before your notary appointment.

Common Types of Affidavits

• General affidavit — a sworn statement of fact used in a wide range of legal and personal contexts
• Affidavit of identity — confirms a person's identity, often required for name changes or discrepancies on official documents
• Small estate affidavit — used to transfer a deceased person's assets without full probate, in states that allow it
• Affidavit of support — used in immigration filings to confirm financial sponsorship
• Affidavit of domicile — confirms residency, often required when transferring stock or securities after a death

What to Bring to Notarize an Affidavit

• Government-issued photo ID
• The unsigned affidavit — you'll sign it and take the oath in front of the notary
• Confirmation from the requesting party or agency on whether notarization (and possibly an apostille) is required for your specific use case

If your affidavit is headed overseas — for a foreign court, embassy, or government agency — notarization alone usually isn't the final step. Most receiving countries also require an apostille or consular authentication on top of the notary's seal.