Wisconsin Probate Petition Forms and Supporting Documents Guide

Filing a probate petition in Wisconsin is one of the first real steps in settling a loved one's estate. But the forms can feel confusing, especially if you've never been to probate court before. Missing even one supporting document can send you back to square one delaying property transfers, creditor notifications, and everything else that depends on the court opening the estate. This article walks through exactly which petition forms Wisconsin requires, what supporting documents you need to attach, and how to avoid the mistakes that trip people up most often.

What is a probate petition in Wisconsin, and why does it matter?

A probate petition is the formal document filed with the circuit court asking to open a decedent's estate. In Wisconsin, this petition is what triggers the court to recognize a personal representative's authority to act on behalf of the estate. Without a properly filed petition, no one has the legal power to manage bank accounts, sell real estate, or pay debts from the estate.

Wisconsin follows the Uniform Probate Code, which means the process is relatively standardized compared to some other states. Still, each county may have its own local practices for how documents get filed, so it's worth checking with the clerk of circuit court in the county where the decedent lived.

Which probate petition forms do I actually need to file?

The specific forms depend on whether you're filing a formal or informal probate proceeding. Here are the primary forms involved:

For informal probate (most common for straightforward estates)

Petition for Informal Probate of Will and/or Appointment of Personal Representative (PR-1801) This is the standard petition form used when there's a will and you want the court to appoint you as personal representative without a hearing.
Application/Petition for Informal Appointment of Personal Representative in Intestate Estate (PR-1802) Use this form if the decedent did not leave a valid will.

For formal probate (required when there are disputes or complications)

Petition for Formal Admission of Will to Probate and/or Appointment of Personal Representative (PR-1803) Filed when someone contests the will, there's uncertainty about its validity, or the court needs to hold a hearing.
Petition for Formal Appointment of Personal Representative Intestate (PR-1804) Used for formal proceedings when there's no will.

You can find these forms through the Wisconsin Court System's official forms page. Many are available as free PDF downloads.

What supporting documents must be attached to the petition?

The petition form alone isn't enough. Wisconsin courts require several supporting documents depending on your situation. Filing a petition without them is one of the most common reasons courts reject probate filings.

Documents you'll need in almost every case

Original will (if one exists) Wisconsin law requires the original will, not a photocopy. If you only have a copy, you'll need to address that with the court before proceeding.
Certified death certificate The court needs proof that the decedent has actually died. Most counties require a certified copy, not a photocopy or funeral home statement.
Statement of domicile Some counties require a separate statement confirming the decedent's county of domicile at the time of death.
Filing fee As of recent filings, the standard filing fee is approximately $164, but this varies slightly by county. Check your county clerk's office for the current amount.

Additional documents you may need

Renunciations or consents If other people have priority to serve as personal representative but are deferring to you, some courts want signed renunciation forms.
Oath of personal representative (PR-1805) Filed after appointment, but many people prepare it at the same time as the petition.
Proof of publication Required later in the process, but understanding the timeline helps you plan ahead. Our guide on how to file probate documents in Wisconsin covers the full sequence.
Bond (if required) The court may require the personal representative to post a bond, especially in formal proceedings or when the will doesn't waive it.

Do I need to file different forms if there's no will?

Yes. When someone dies without a will (called dying "intestate"), you use the intestate petition forms instead of the will-based forms. The petition itself asks the court to appoint a personal representative under Wisconsin's intestate succession laws rather than under the decedent's wishes.

You'll also need to identify the heirs using Petition to Determine Heirs (PR-1814) if the court requires it. The intestate process follows the same basic filing structure, but the court filing requirements for estate administrators shift slightly in terms of who has priority to serve.

Under Wisconsin Statutes Chapter 856, priority to serve as personal representative goes first to the surviving spouse, then to other heirs, then to creditors. Understanding this order matters because the petition must identify who's applying and why they have the legal right to serve.

What information goes on the petition form itself?

Wisconsin's petition forms ask for specific details. Here's what you'll need to have ready before you start filling them out:

Decedent's full legal name, date of death, and county of residence
Your name, address, and relationship to the decedent
Whether the decedent left a will and, if so, when and where it was executed
Estimated value of the estate both real property and personal property, listed separately
Names and addresses of heirs and devisees Wisconsin requires that you list all people who would inherit under the will or under intestate law
Whether you've received a renunciation from anyone with higher priority

Be accurate with the estimated estate values. Courts use this information to determine filing requirements and whether simplified procedures might apply. Estates under $50,000 (with no real property) may qualify for transfer by affidavit instead of full probate, which is a separate process entirely.

What are the most common mistakes people make with probate petitions?

After seeing hundreds of probate filings, a few errors come up again and again:

Filing photocopies instead of the original will. Wisconsin courts want the original. If it's lost, you may need to submit testimony about its contents under a different procedure.
Listing incomplete heir information. Courts will reject petitions that leave blanks for heir names or addresses. Even if you're unsure, you need to list everyone you believe has an interest.
Using the wrong petition type. Filing for informal probate when there's a will dispute pending will get you nowhere fast. Knowing the timeline and document sequence for estate administration helps you choose the right approach.
Forgetting the filing fee or filing in the wrong county. The petition must be filed in the county where the decedent was domiciled, not necessarily where they died or where the property is located.
Not attaching the death certificate. It sounds basic, but it happens more often than you'd think.

How do I actually file the petition with the court?

Once you've completed the petition form and gathered your supporting documents, you file everything with the clerk of circuit court in the decedent's county of residence. Many Wisconsin counties accept in-person filing, and some now allow electronic filing through the state's e-filing system.

After filing, here's what typically happens next:

The court reviews the petition for completeness.
For informal probate, the register in probate may issue letters of appointment the same day or within a few days.
For formal probate, the court schedules a hearing and you must provide notice to all interested parties.
You receive Letters of Appointment, which is the document proving your authority as personal representative.

The letters of appointment are what banks, county offices, and other institutions will ask for before they let you access estate assets. Keep certified copies handy you'll need them repeatedly throughout the administration process.

Quick checklist before you file your Wisconsin probate petition

✅ Determine the correct petition form formal vs. informal, will vs. intestate
✅ Locate the original will (if one exists) and a certified death certificate
✅ Gather heir and devisee names, addresses, and relationships
✅ Estimate estate values separate real property from personal property
✅ Check the filing fee with your county clerk's office
✅ Confirm the correct filing county based on the decedent's domicile
✅ Prepare renunciations if anyone with higher priority is stepping aside for you
✅ Review the full filing process using our step-by-step guide to filing probate documents in Wisconsin

Next step: Print or download the correct petition form from the Wisconsin court system website, fill it out completely using the guidance above, and schedule a visit to the clerk of circuit court in the decedent's county. Bring the original will, certified death certificate, your completed petition, and a check or money order for the filing fee. If anything about the estate is complicated contested heirs, unclear will language, out-of-state property talk to a Wisconsin probate attorney before you file to avoid delays that can stretch the process by months.