When a loved one passes away, the last thing anyone wants to face is a maze of legal paperwork. Unfortunately, starting a probate case often feels just like that—a confusing and emotional mix of court forms, deadlines, and terminology most of us never expected to deal with. But it doesn’t have to be a nightmare. Knowing the required documents for probate case filings upfront can save you weeks of frustration, potential court delays, and unnecessary legal expenses.
In this guide, we’ll walk you through the most important required documents for probate case procedures in Texas (and generally applicable in many states), explain what each document does, and how to make sure you don’t miss anything critical. You’ll also read about common pitfalls that families run into, and how a little prep work can make the difference between a smooth legal process and a drawn-out court battle.
Let’s take a closer look—one piece of paperwork at a time.

Why Understanding the Required Documents for Probate Case Matters
The Court Won’t Wait Just Because You’re Grieving
Losing a parent, spouse, or close family member is hard enough without worrying about court filings. But once someone passes away and they leave assets behind, the court system needs specific documentation to begin settling the estate. This is where most people freeze. There’s no grief manual that tells you, “Hey, go find the original will and a certified copy of the death certificate.”
Unfortunately, without the correct required documents for probate case initiation, the court won’t even look at your filing.
Real Story: After her father passed in El Paso, Maria assumed she just needed his will. When she filed it with the court, her petition was rejected—she hadn’t included a certified death certificate, a list of heirs, or the required oath of the executor. The result? Her case was delayed three months.
Understanding what’s needed—and having it in hand—can prevent these painful and expensive delays.
Certified Copy of the Death Certificate
The Legal Starting Point for Any Probate Case
This is the document that proves the person has legally passed away. A certified death certificate is often the first and most obvious document needed to start a probate case, but many people don’t realize that multiple copies are usually required.
You’ll need a death certificate for:
- Filing the probate petition
- Notifying banks and creditors
- Claiming insurance or benefits
- Closing accounts
Tip: Request at least 5–10 certified copies from the funeral home or the Texas Vital Statistics Unit. It’s easier to get them all at once than request more later.
This one document is the foundation for every other form in the required documents for probate case list.
The Original Will (If One Exists)
Without the Original, You Could Be in for a Fight
The original last will and testament is arguably the most important document in a probate case. If your loved one created a will, you must file the original—not a copy—with the court. That original becomes part of the court record and is used to guide the administration of the estate.
What the court needs:
- Original, signed, and dated will
- Any attached self-proving affidavit (helps skip witness testimony)
- Codicils or amendments to the will

What if the original will is missing? You may still proceed using a copy, but you’ll need additional affidavits and possibly witness testimony. This can open the door for other heirs to contest the will, creating unnecessary conflict.
The lesson here? Keeping the original will in a safe, accessible place—and letting someone know where it is—is crucial. If you’re an executor, make retrieving this your top priority when gathering the required documents for probate case filings.
Application for Probate
The Form That Officially Starts the Court Process
Every probate case begins with a formal request to the court. In Texas, this is called the Application for Probate of Will and Issuance of Letters Testamentary. Think of it as the legal handshake that tells the court, “We’re ready to begin.”
The application includes:
- Name and address of the deceased
- Names and contact info of heirs and beneficiaries
- Description of assets subject to probate
- Request to appoint an executor
This form needs to be carefully filled out and filed in the county where the deceased lived. After filing, there’s usually a waiting period before the hearing—so timely submission is important.
Missing this key form delays everything. It’s one of the first official required documents for probate case recognition by the court.
Oath of Executor or Administrator
You Can’t Act Until You Swear In
Once the court approves the executor or administrator, they must take an official oath before performing any duties. This is typically done before a judge or court clerk and requires a written, signed Oath of Executor to be submitted.
This document affirms that the executor will:
- Uphold the law
- Act in the best interest of the estate
- Administer assets fairly and ethically
Common mistake: People often think they can act as executor the moment the will names them. That’s not true. Until the court officially appoints you—and you take the oath—you have no legal authority.
So if you’re handling someone’s estate, put this near the top of your list of required documents for probate case obligations.
Proof of Posting or Citation by Publication (in Some Cases)
Notifying the World That Probate Is Happening
In some cases, the law requires public notice that a probate case is being filed. This is done through what’s called a citation by publication—a legal ad published in a local newspaper, notifying potential creditors or unknown heirs.
Proof of this posting must be submitted to the court before the case can proceed.
You may need this if:
- The estate has unknown heirs
- There’s no will
- The executor can’t locate all beneficiaries
- You’re opening an intestate (no will) proceeding
Filing this proof is one of the lesser-known but still essential required documents for probate case progression, especially in more complex estates.
Inventory, Appraisement, and List of Claims
Accounting for Every Penny, Property, and Debt
Once appointed, the executor has a duty to provide the court with an Inventory, Appraisement, and List of Claims within 90 days. This document lists every asset in the estate, its estimated value, and all known debts.
Typical items include:
- Bank accounts
- Real estate holdings
- Vehicles
- Business interests
- Debts (mortgages, credit cards, loans)
Failing to submit this on time—or doing it incorrectly—can trigger penalties or removal as executor. It’s one of the more detailed and time-consuming required documents for probate case closure, but it’s non-negotiable.

Affidavit of Heirship (When No Will Exists)
Who’s Entitled to Inherit?
When a person dies without a will, Texas probate courts require an Affidavit of Heirship to determine who inherits the estate. This document is sworn by people familiar with the family and the deceased and must include:
- Relationship to the deceased
- Names and birthdates of surviving heirs
- Confirmation that no other heirs exist
- Description of the deceased’s property
It may sound simple, but errors in this affidavit can lead to inheritance disputes or even court-ordered mediation.
So if your loved one passed away intestate, add this to your checklist of required documents for probate case proceedings immediately.
Letters Testamentary or Letters of Administration
The Court’s Permission Slip to Handle the Estate
These are not letters in the traditional sense, but official court documents that give the executor or administrator the authority to act on behalf of the estate.
You’ll need Letters Testamentary (if there’s a will) or Letters of Administration (if there’s not) to:
- Access bank accounts
- Sell property
- Pay debts
- Distribute assets
- File taxes
Important note: Most financial institutions won’t even speak to you until you present this document. It’s one of the most powerful and often requested required documents for probate case management.
Tax Documents and EIN Application
The IRS Still Wants Its Share
Probate often involves filing final income tax returns and possibly estate tax forms. For that, you’ll need an EIN (Employer Identification Number) for the estate, which replaces the decedent’s Social Security Number for tax purposes.
You’ll also need:
- Form 1041 (U.S. Income Tax Return for Estates and Trusts)
- Final personal income tax returns
- Estate tax documents if assets exceed exemption limits
Even small estates can trigger tax obligations. Don’t overlook this step in your list of required documents for probate case administration.
Final Accounting and Petition for Distribution
Closing the Loop—With Receipts
Before the court allows the executor to distribute what’s left of the estate, they must submit a Final Accounting and Petition for Distribution. This tells the court:
- What was collected
- What was spent
- What remains for heirs
- That all debts and taxes were settled
Only after approval of this document will the court allow final distributions. Forgetting this step—or doing it poorly—can cause liability for the executor and reopen old wounds among heirs.
It’s often the last step in the list of required documents for probate case resolution, but it’s one of the most important.

Final Thoughts: The Paper Trail That Leads to Peace
When you’re grieving, dealing with court paperwork might feel like the last thing you want to do. But having a clear understanding of the required documents for probate case filings can turn chaos into control. It’s not just about checking boxes—it’s about creating clarity during one of life’s most uncertain times.
Whether you’re an executor trying to do the right thing, or a family member looking to understand the process, gathering these documents in advance—and knowing how they work—will make the road smoother. Probate can be complex, but it doesn’t have to be a disaster.
By following this guide, you’ll be prepared, confident, and legally equipped to handle whatever the court process throws your way.
