📝
Guides
8 min read • November 20, 2025

How to Write an Affidavit: Complete Guide for 2025

Learn how to write a legally valid affidavit with our step-by-step guide. Includes state-specific requirements for Texas, Utah, and Arizona.

How to Write an Affidavit: Complete Guide for 2025

Disclaimer: This article provides general educational information about affidavits and is not legal advice. Legal requirements vary by jurisdiction and situation. For advice about your specific legal matter, consult with a licensed attorney in your area.


An affidavit is a sworn written statement of facts, made under oath before a notary public or other authorized official. It's a legal document commonly used in court proceedings, real estate transactions, and many other legal matters.

What is an Affidavit?

An affidavit is a voluntary declaration of facts that you swear or affirm to be true. When you sign an affidavit, you're stating under penalty of perjury that the information contained in the document is accurate to the best of your knowledge.

Key Components of a Valid Affidavit

Affidavits typically include these standard elements:

  1. Title - Clearly identifies the document as an affidavit
  2. Your Identity - Your full legal name and address
  3. Statement of Facts - Clear, numbered facts you're swearing to
  4. Oath or Affirmation - Statement that you swear or affirm the truth
  5. Your Signature - Signed in front of a notary
  6. Notary Section - Notary's signature, seal, and commission details

Note: Specific requirements vary by jurisdiction and purpose. Consult local court rules or an attorney for requirements in your area.

Step-by-Step: How to Write an Affidavit

Step 1: Start with the Title

Begin with a clear title that describes the purpose:

  • "Affidavit of [Your Name]"
  • "Affidavit in Support of [Purpose]"
  • "Affidavit of Residence" (for specific types)

Step 2: Include Your Information

Start with your identifying information:

  • Full legal name
  • Current address
  • Date of birth (if relevant)
  • Relationship to the case or matter

Step 3: Write Clear, Numbered Facts

This is the heart of your affidavit. Each fact should:

  • Be numbered sequentially (1, 2, 3, etc.)
  • State one fact per paragraph
  • Be written in first person ("I am..." not "The affiant is...")
  • Include specific dates, times, and locations
  • Stick to facts you personally know (not hearsay)

Example:

1. I am John Smith, residing at 123 Main Street, Austin, Texas 78701.
2. I have personal knowledge of the facts stated in this affidavit.
3. On October 15, 2025, at approximately 2:00 PM, I witnessed...

Step 4: Use Clear, Simple Language

  • Avoid legal jargon unless necessary
  • Write in short, direct sentences
  • Be specific with dates, times, and amounts
  • Don't include opinions unless specifically asked

Step 5: Include the Verification Statement

End with a statement like:

"I declare under penalty of perjury under the laws of [State] that the foregoing is true and correct."

Step 6: Sign Before a Notary

  • Do NOT sign the affidavit before meeting with the notary
  • Bring valid photo ID
  • Sign in the notary's presence
  • The notary will complete their section and apply their seal

State-Specific Requirements

Important: Requirements vary significantly by state and court. The information below is general in nature. Always verify current requirements with your local court or consult an attorney.

Texas Affidavits

Texas affidavits commonly include:

  • Jurat (oath administered by notary)
  • Notary's county of commission
  • Notary seal or stamp
  • Statement: "Before me, the undersigned authority..."

Utah Affidavits

Utah affidavits commonly include:

  • Clear statement of personal knowledge
  • Notary's signature and seal
  • Date of notarization
  • Venue (county and state)

Arizona Affidavits

Arizona affidavits commonly include:

  • Verification statement
  • Notary public seal
  • Statement of jurisdiction
  • Date and location of signing

Common Types of Affidavits

1. Affidavit of Identity

Used to prove your identity for legal purposes.

2. Affidavit of Residence

Proves where you live, often needed for school enrollment or government benefits.

3. Affidavit of Support

Shows financial responsibility, commonly used in immigration cases.

4. Affidavit of Heirship

Establishes inheritance rights when someone dies without a will.

5. Affidavit of Service

Proves that legal documents were properly served to another party.

Understanding Legal Terms

Here are three important concepts that help you understand how courts evaluate your affidavit:

Weight: This means how much the court believes and trusts your evidence. What you saw yourself has more weight than what someone told you. Facts you can prove have more weight than things you can't prove.

Credibility: This means whether people believe you're telling the truth. Courts trust you more when you give specific details, stay consistent, act professional, and have proof that backs up what you say.

Reliability: This means how trustworthy your information is. Information is more reliable when you saw it yourself, can prove it, and your story doesn't change.

What NOT to Include in an Affidavit

Avoid these common mistakes:

Pure Hearsay - Avoid unattributed secondhand information (what you heard from others without identifying the source) ❌ Unsupported Opinions - Stick to facts unless your opinion has a stated basis ❌ Irrelevant Information - Only include pertinent facts ❌ Legal Arguments - Save arguments for your lawyer ❌ Emotional Language - Stay factual and neutral

Affidavit Template Structure

Here's a basic template structure:

[STATE] OF [STATE NAME]
COUNTY OF [COUNTY NAME]

AFFIDAVIT OF [YOUR NAME]

I, [Your Full Name], being duly sworn, depose and state:

1. I am over the age of 18 and competent to make this affidavit.

2. I have personal knowledge of the matters stated herein.

3. [Your first fact here]

4. [Your second fact here]

5. [Continue with numbered facts]

I declare under penalty of perjury that the foregoing is true and correct.

_________________________
[Your Signature]
[Your Printed Name]

Dated: _______________


SUBSCRIBED AND SWORN to before me this ____ day of ________, 20__.

_________________________
Notary Public
My Commission Expires: ___________

Tips for a Strong Affidavit

Be Specific - Include exact dates, times, locations, and amounts

Stay Organized - Use numbered paragraphs for each fact

Proofread Carefully - Errors can undermine credibility

Keep it Concise - Include only relevant information

Use Professional Language - Be clear and respectful

Review Before Signing - Once notarized, it's difficult to change

Cost of Creating an Affidavit

  • DIY with template: $0-$25 (plus notary fee: $5-$15)
  • Online service: $50-$150 (including guidance)
  • Attorney prepared: $200-$500+

How discover.legal Can Help

Our AI-powered platform makes creating affidavits simple:

  • State-specific templates for Texas, Utah, and Arizona
  • Guided process walks you through each step
  • Built-in validation catches common errors
  • Professional formatting ready for court
  • Same-day completion in under 10 minutes
  • Only $79 - fraction of attorney costs

Frequently Asked Questions

Q: Can I write my own affidavit? A: Many people prepare their own affidavits, though requirements vary by jurisdiction and purpose. For important legal matters, consider consulting an attorney to ensure your affidavit meets all applicable requirements.

Q: Does an affidavit need to be notarized? A: In most jurisdictions, affidavits require notarization to be legally valid. Some states allow unsworn declarations as alternatives in certain situations. Check your local requirements.

Q: Can I change an affidavit after signing? A: Generally, once an affidavit is notarized, it cannot be altered. Corrections typically require creating a new affidavit. Consult with an attorney if you need to correct a previously filed affidavit.

Q: How long is an affidavit valid? A: Affidavits typically don't have expiration dates, though courts may give less weight to older affidavits if circumstances have changed. Specific validity periods may apply in certain contexts.

Q: What happens if I lie in an affidavit? A: False statements in an affidavit can constitute perjury, which is a serious criminal offense. Always ensure your statements are truthful and accurate.

Ready to Create Your Affidavit?

Don't struggle with templates or worry about legal requirements. Our platform guides you through creating a legally valid affidavit in minutes.

Ready to Create Your Legal Document?

Save time and money with our AI-powered platform. Professional documents in minutes.

Related Articles

⚖️
Guides7 min read

How to Write Persuasive Legal Documents: A Guide for Self-Represented Litigants

Read Article
✍️
Guides5 min read

Affidavit Notarization: Everything You Need to Know

Read Article