Affidavits and Sworn Statements: Complete Guide

Published December 15, 2025 by Christian Nichols

An affidavit might sound intimidating, but it's simply a written statement of facts that you swear or affirm to be true under oath. As a Pennsylvania notary, I notarize affidavits regularly for court cases, government applications, estate matters, and more. Let me explain what affidavits are, when you need them, and how the notarization process works.

What Is an Affidavit?

An affidavit is a written statement of facts that you declare to be true under penalty of perjury. The key elements are:

  • Written statement - You describe facts in writing
  • Sworn under oath - You swear or affirm before a notary that the statement is true
  • Signed in the notary's presence - You must physically sign the document while the notary watches
  • Notarized with a jurat - The notary uses special wording that includes "sworn to and subscribed before me"

Because you're swearing under oath, making false statements in an affidavit is perjury - a crime punishable by fines or even jail time. This is why affidavits carry legal weight.

Affidavit vs. Declaration: What's the Difference?

You might also see the term "declaration." Here's how they differ:

  • Affidavit: Must be sworn before a notary public. Requires a jurat notarization.
  • Declaration: Signed under penalty of perjury but doesn't require a notary. Common for federal forms and some court documents.

If your document says "affidavit," you need a notary. If it says "declaration under penalty of perjury," you usually don't need notarization (but check the specific requirements for your situation).

Common Types of Affidavits

As a Western Pennsylvania notary, I regularly notarize these types of affidavits:

1. Affidavit of Residence / Residency Affidavit

Used for: Proving where you live for school enrollment, in-state tuition, voter registration, or driver's license applications

What you state: Your name and that you reside at a specific address

Supporting docs: Often required along with utility bills, lease agreements, or other proof

2. Affidavit of Identity / Name Affidavit

Used for: Explaining name discrepancies on documents (marriage, divorce, typos), applying for passports, or correcting official records

What you state: That you are the same person despite different name spellings, or that you've gone by various names

Example: "I, Mary Jane Smith, am also known as Mary J. Smith and Mary Johnson (maiden name)"

3. Affidavit of Heirship

Used for: Establishing who inherits property when someone dies without a will

What you state: Information about the deceased person's family members and heirs

Note: Often used for small estates where formal probate isn't required

4. Affidavit of Support (Form I-134 or I-864)

Used for: Immigration applications where you sponsor someone coming to or staying in the United States

What you state: Your financial ability to support the immigrant so they don't become a public charge

Requirements: Must include proof of income and assets

5. Small Estate Affidavit

Used for: Claiming property or assets from a deceased person's estate without going through full probate (Pennsylvania allows this for estates under $50,000)

What you state: The value of the estate, the heirs, and that no probate is required

Benefits: Faster and cheaper than formal probate proceedings

6. Affidavit of Single Status / Affidavit of No Impediment to Marriage

Used for: Getting married abroad or proving you're legally free to marry

What you state: That you're not currently married and are legally able to marry

Often apostilled: Foreign countries usually require an apostille for international recognition

7. Lost Document Affidavit

Used for: When you've lost an important document like a car title, stock certificate, or deed

What you state: That the document is lost, not stolen, and you haven't transferred ownership

Purpose: Allows you to get a replacement without the original

8. Affidavit of Service / Proof of Service

Used for: Legal proceedings where you need to prove you delivered documents to another party

What you state: How, when, and where you served the documents

Filed with: The court handling the case

How the Affidavit Notarization Process Works

Notarizing an affidavit requires a specific type of notarial act called a jurat. Here's how it works when you meet with me:

Step 1: Bring Your Valid Photo ID

I must verify your identity with a government-issued photo ID: driver's license, passport, state ID, or military ID. No exceptions.

Step 2: Do NOT Sign the Affidavit Yet

This is critical: You must sign the affidavit in my presence. If you've already signed it, we have to start over with a fresh copy. This is a Pennsylvania law requirement for jurat notarizations.

Step 3: I'll Administer an Oath or Affirmation

I'll ask you to raise your right hand and swear (or affirm, if you prefer non-religious wording) that the contents of the affidavit are true. It sounds like this:

"Do you solemnly swear (or affirm) that the statements in this document are true and correct to the best of your knowledge?"

You respond "I do" or "Yes."

Step 4: Sign the Affidavit in My Presence

After you take the oath, you sign the affidavit while I watch. Your signature must match the name on your ID reasonably well.

Step 5: I Complete the Jurat Certificate

Your affidavit should already have jurat wording like this at the bottom:

"Sworn to (or affirmed) and subscribed before me this ___ day of ______, 20__, by [your name]."

I'll fill in the date, sign my name, and apply my official notary seal. Done!

What If My Affidavit Doesn't Have Notary Wording?

Sometimes affidavits don't have the notary certificate language pre-printed. In that case, I can attach a separate jurat certificate (called a "loose certificate") and staple it to your affidavit. Just let me know when you call to schedule.

Can Someone Else Sign an Affidavit for Me?

No. Affidavits must be signed by the person making the statement - that's you. You cannot send someone else to sign on your behalf, and you cannot sign it ahead of time. You must personally appear before the notary, take the oath, and sign while the notary watches.

Do I Need a Lawyer to Create an Affidavit?

Not usually. Many affidavits are simple statements of fact that you can write yourself or find templates for online. However:

  • If your affidavit is for court or involves complex legal issues, consult an attorney
  • I cannot give you legal advice as a notary - I can only verify your identity and witness your signature
  • If you're unsure what to write, seek legal help before coming to me for notarization

What to Bring to Get an Affidavit Notarized

Make your appointment smooth by bringing:

  • Valid government-issued photo ID (driver's license, passport, state ID, military ID)
  • Your unsigned affidavit (with jurat wording already on it, or I'll provide a loose certificate)
  • Any supporting documents (if the affidavit references other paperwork)
  • Payment for notary service (Pennsylvania allows up to $5 per jurat, plus travel fees for mobile service)

How Much Does It Cost to Notarize an Affidavit?

Pennsylvania law caps notary fees at $5 per signature for a jurat. As a mobile notary, I also charge a travel fee based on distance:

Transparent, Service-Type Pricing

Rates vary by what you need notarized and how far we travel from Butler, PA. No hidden fees.

View Full Pricing →

How Long Is a Notarized Affidavit Valid?

Affidavits don't expire unless they contain information that changes over time (like a residency affidavit when you move). Courts or agencies may require affidavits to be recent - typically within 30 to 90 days. Check with whoever is requesting the affidavit to see if they have specific time requirements.

Need an Affidavit Notarized?

I provide mobile notary service for affidavits and sworn statements throughout Western Pennsylvania. I come to your home, office, or any location convenient for you - no need to search for a notary or wait in line at a bank.

I serve Butler, Lawrence, Mercer, Crawford, Erie, Allegheny, Beaver, and Venango Counties. Same-day appointments often available.

Learn more about notary services or check pricing.

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