In an age of easy access to digitized legal forms, templates, instructions, and AI, you may wonder: Can I write my own will? The short answer is yes, but there are caveats. Arizona law does allow handwritten or DIY (do-it-yourself) wills, but only if certain conditions are met.

Yes, you must be hands-on in planning for what happens to your estate, but certain aspects of this task still require expert knowledge and guidance. Doing it yourself to save on the legal expenses today might lead to far greater costs and disadvantages in the future.

When you DIY your estate planning, you open the door to mistakes that can only come to light when you’re no longer around to fix them. Remember, we are talking about everything you’ve worked for—your home, savings, businesses, personal treasures, and other things you consider valuable.

In this blog, we explain where DIY wills go wrong, how Arizona law treats self-created wills, and how to protect your loved ones from preventable legal problems.

Are DIY Wills Legal in Arizona?

Yes. If you live in Arizona, you can DIY your will without a lawyer, as state laws allow:

Self-Written or Holographic Wills

Perhaps the simplest type of DIY will, a holographic will doesn’t require a lawyer or even witnesses. For your self-written will to be legally valid, it only needs to be entirely written in your handwriting, dated, and signed.

Printed Will Forms or Online Wills

Becoming more popular today because you can easily find one on the internet, a DIY will template or fill-in-the-blanks will form can also be valid as long as:

You signed it.
Witnesses, or two competent adults, are present during your signing.
The witnesses signed it.

As you can see, notarization is not a requirement for a will to be valid in Arizona. However, getting your will notarized can help it become “self-proving.” A self-proving will is necessary for speeding up probate, a court-supervised process that checks the validity of a will.

Because wills are so easy to create, mistakes are just as easy to make.

5 Ways DIY Wills Can Go Wrong

Even after strictly following current Arizona will requirements, DIY wills can lead to complications that families don’t see coming. Here are some of the most common ways DIY wills fail.

1. Unclear or Contradictory Language

Courts, especially those in Arizona, rely on the literal wording of the will. Problems arise when your will says something vague or uses words that can be misinterpreted in more than one way. Here are some examples:

“I leave the house to my children” (Which children? From which relationship?)
“Divide equally among my family” (Who counts as “family”?)
“My partner gets everything” (Is this a spouse? A boyfriend/girlfriend? Cohabiting partner without legal rights?)

These unclear words or contradictory meanings can lead to:

Will contests
Legal fees
Delays in probate
Damaged relationships

2. Missing Requirements or Improper Witnessing

Even with the minimal requirements, many DIY wills still end up with some simple mistakes, including:

Missing signatures or dates
No witnesses stated on the printed will
Witnesses sign when the will creator or testator is not present
Witnesses are also beneficiaries
Only one witness instead of two
Witnesses are absent or unavailable when the will goes into probate

Making only one of these mistakes can lead to the invalidation of the entire document.

3. Not Naming Key Roles

Aside from who gets what, you also need to assign essential roles for the successful execution of your will. It is common for DIY wills to leave out these essential appointments:

Personal Representative (Executor)
Guardian for minor children (for their care)
Conservator for minors or beneficiaries with special needs (for managing their finances)
Successor representatives

Your will is still valid even without these appointments. However, if you don’t name these roles, the court chooses someone for you—which may not be the person you would have wanted.

4. Not Planning for “What If” Scenarios

While simple, wills should still be powerful enough to adapt when situations change. Online free forms and templates rarely address contingencies, such as:

What if a beneficiary dies before you?
What if your spouse remarries?
What if your child is a minor when you pass?
What if the person you named as executor is unable or unwilling to serve?

Without preparing for these potential scenarios in your will, your estate may pass in unintended ways, and sometimes your assets may even go to someone you never wanted to inherit.

5. Conflicts with Other Legal Documents

Estate planning isn’t limited to wills. You can have other documents like trusts, powers of attorney (POAs), healthcare directives, etc. Your will must align with these tools within your estate plan. Even a well-written will can fail if it doesn’t align with:

Beneficiary designations
Joint ownership
Community property rules
Retirement accounts
Life insurance policies
Real estate deeds

Creating conflicting instructions is a common mistake among DIY wills. An example is when you leave a house to one person in the will, but you forgot that you already listed someone else on the deed. Mistakes such as this cause disputes, delays, and often litigation.

So… Should You Write Your Own Will?

“Can you write your own will?” is an easy question to answer. However, the more important question is: Should you? While writing your own will is perfectly legal, it is rarely the best route—especially if you have:

Children
A blended family
A business
Real estate
A high-value estate
Assets in multiple states
A desire to protect heirs from conflict

Hiring legal support may require some expense today, but it can save you from far greater costs in the future. An attorney doesn’t just draft a document; they help you build a strategic and airtight plan that works for you, in real life, not just on paper.

If your goal is to protect your loved ones, avoid family conflict, and make sure your wishes are crystal clear, working with an estate planning attorney is the safest and most reliable way to do it.

Write Your Own Will With Rilus Law

If you really must draft your own will, you must do it right. So it’s essential to use a resource that doesn’t cut corners. That’s why Rilus Law provides a free online estate planning toolkit that goes far beyond a basic DIY will.

In our Free Estate Plan, you’ll get an easy-to-use Arizona Last Will and Testament Form, as well as:

Simple instructions to guide you through writing your Will
A checklist to confirm that your Will has you fully protected
A 5-minute video walkthrough with step-by-step instructions to complete your Will.

Click here to Write your Will with Our Free Estate Plan Kit

Use this guided resource to reduce the risk of common DIY mistakes and build more confidence in the validity of your will. And when you’re ready for a fully customized, attorney-prepared estate plan, Rilus Law is here to help. Rely on us to make the process simple, clear, and stress-free.

Can I Write My Own Will? What You Should Know Before You DIY