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Wooden judge's gavel resting on a base labeled "PROBATE LAW" with a blurred scales of justice statue in the background.

Whoever holds the original has 30 days from the date of learning of the death to file it with the probate register. This duty applies even if the family has decided that an estate does not need to be opened. Wis. Stat. § 856.05 makes anyone who ignores this liable to every person affected by the will.

Step 1: File the Original Will With the Right County

The case belongs to the county where your parents lived. This puts Wauwatosa and Brookfield families in Milwaukee County, and Pewaukee and Oconomowoc families in Waukesha County. Waukesha only accepts original wills for filing without a hearing. If there is no probate, the will is still filed, along with an affidavit stating that there was no probate or a letter providing the decedent’s name, date of birth and date of death, as well as their last address.

In Milwaukee County, arriving with a photocopy instead of the original document pushes the estate into formal administration, which, by statute, means retaining an attorney.

Step 2: Confirm That Probate Is Actually Necessary

Many estates in both countries never need a full administration. Property passes outside probate when it is held jointly with survivorship rights, carries a payable-on-death or transfer-on-death designation, names a living beneficiary, or sits in a funded revocable trust. Only assets titled in the name of your parents alone reach the court.

For modest estates, Wis. Stat. ch. 867 offers shortcuts: transfer by affidavit, summary settlement where a surviving spouse or minor children exist, and summary assignment. Waukesha’s local rules spell out which ones the register expects at which asset level.

Step 3: Choose Between Informal and Formal Administration

Informal administration is handled by a probate registrar, rather than a judge. This is the default option for families who agree to it. It requires an original will, or, if there is no will, signed waivers and consent from every interested party naming the same personal representative.

The counties differ in some ways that are worth knowing before filing:

In Milwaukee County, the probate court reviews every application and will let you know if the matter needs to proceed formally. This review takes time.

Milwaukee County does not accept signature bonds. Only surety bonds are accepted.

Under Waukesha County’s probate local rules, if you are a personal representative living outside of Wisconsin, you must post a surety bond and appoint a resident agent.

Step 4: Watch the Creditor Claim Deadline

When the application is filed, the court or probate registrar sets the claims deadline by order. Under Wis. Stat. § 859.01, this date falls between three and four months after the order is issued. The personal representative then publishes a notice and notifies all known creditors.

Claims that miss the deadline are generally barred. However, one exception protects a creditor if the personal representative was aware of the debt but never notified the creditor. Guessing on that list is a poor idea.

Step 5: File the Inventory Within Six Months

Section 858.01 gives the personal representative six months from the date of appointment to file an inventory. All property is valued as at the date of death, and identified as either marital or individual property. Waukesha only grants a one-month extension on a verified petition with a proposed order attached.

Man in suit and tie pointing at virtual hexagon icons related to probate law.

Step 6: Close on the Local Clock, Not the State One

This is where families are caught. State law under § 863.35 treats an estate as dormant after 18 months and triggers an order to show cause. Waukesha County is more strict. Its local rules require every administrative procedure to be completed within 12 months of the initial filing, unless the court grants an extension.

Before either county closes the file, a Wisconsin Closing Certificate for Fiduciaries must be filed, unless waived. A final account is required for informal administrations, unless the residual beneficiaries waive it. Even then, the court wants proof that they were told about what the personal representative and attorney was paid.

Get the First Filing Right and the Rest Gets Easier

Most probate problems that we untangle at Collins Law Firm start as a small procedural mistake in the opening documents: a missing waiver, a heirs nobody notified, bonds nobody anticipated. If you have a will and are unsure what happens next, bring it before the 30-day deadline. Contact us today to schedule a consultation.

Talk to someone about your estate plan today. Free and Confidential.

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