If you're serving as an executor for someone who lived in Wisconsin, you're legally required to prepare an inventory of their assets. This isn't optional paperwork it's a court-mandated step, and getting it wrong can delay probate, upset beneficiaries, or even expose you to personal liability. Understanding the specific requirements for a Wisconsin executor inventory helps you protect yourself and move the estate through probate without unnecessary problems.

What Is an Executor Inventory in Wisconsin?

An executor inventory is a formal written document that lists every asset belonging to the deceased person's estate. Under Wisconsin probate law, the personal representative (executor) must file this inventory with the probate court within a specific timeframe after being appointed. The inventory must include real estate, bank accounts, investments, vehicles, personal property, business interests, and any debts owed to the deceased.

Each asset needs to be described clearly and assigned a fair market value as of the date of death not the date you're filling out the form. The court uses this inventory to oversee how the estate is managed and eventually distributed to heirs.

When Does the Inventory Need to Be Filed?

Wisconsin law generally requires the executor to file the inventory within 90 days of being appointed by the court. This deadline is firm. If you need more time, you can request an extension, but you should do so before the deadline passes. Filing late without permission from the court can result in sanctions or removal as executor.

The 90-day window starts from the date of your official appointment not from the date the person died, and not from when you received the will. Keep this distinction in mind when you're managing your timeline.

What Assets Need to Be Included?

The inventory should cover everything the deceased owned or had a legal interest in at the time of death. Here's a general breakdown:

• Real property homes, land, rental properties, timeshares, and any real estate the deceased owned. For these, you'll need to list the property description and its fair market value. Our guide on handling real estate assets in a Wisconsin executor inventory covers this in more detail.
• Financial accounts checking accounts, savings accounts, CDs, money market accounts, and brokerage accounts.
• Retirement accounts and life insurance only if payable to the estate. If a beneficiary is named directly, these typically pass outside probate.
• Vehicles, boats, and recreational vehicles
• Personal property furniture, jewelry, art, electronics, collectibles, and household goods.
• Business interests sole proprietorships, LLC membership interests, or closely held stock.
• Debts owed to the deceased if someone owed the decedent money, that's an estate asset.

How Are Values Determined?

Every item in the inventory needs a fair market value what a willing buyer would pay a willing seller on the date of death. For bank accounts, this is straightforward: use the balance on the date of death. For real estate, you might use a recent appraisal or a comparable market analysis. For vehicles, tools like Kelley Blue Book or NADA guides can help. For household items and personal belongings, reasonable estimates are acceptable, but you should document how you arrived at each number.

You don't need to hire an appraiser for every item in the house. Common sense applies. A toaster isn't worth appraising. A coin collection or a piece of fine jewelry might be.

Does Jointly Owned Property Go on the Inventory?

It depends on how the property was titled. Assets held in joint tenancy with right of survivorship pass automatically to the surviving owner and generally don't belong in the probate inventory. The same is true for assets with a named beneficiary, like a life insurance policy paid to a specific person.

However, if property was held as tenants in common, the deceased person's share does belong in the inventory. When in doubt, check the deed or account documentation and consult with a probate attorney.

What Happens After the Inventory Is Filed?

Once filed, the inventory becomes part of the probate record. Beneficiaries and interested parties can review it. The court may ask questions or request corrections if something looks incomplete or inaccurate. Creditors also use the inventory to understand whether the estate has enough assets to pay outstanding debts.

The inventory essentially sets the foundation for everything that follows in probate paying debts, filing taxes, and distributing assets. If you want to understand the full sequence of steps, our overview of the executor inventory process in Wisconsin probate walks through how it fits into the bigger picture.

What Are the Most Common Mistakes Executors Make?

Executors run into trouble in predictable ways. The most frequent errors include:

• Missing assets forgetting about a safe deposit box, a small brokerage account, or digital assets like cryptocurrency.
• Using incorrect values listing the purchase price instead of the fair market value at the date of death, or using outdated appraisals.
• Filing late missing the 90-day deadline without requesting an extension.
• Omitting jointly held property either including assets that don't belong in the inventory or leaving out the deceased's share of tenancy-in-common property.
• Not keeping records failing to document how values were determined, which creates problems if anyone challenges the inventory.

For a deeper look at these issues, see our article on common executor inventory mistakes in Wisconsin.

Do You Need to Use a Specific Form?

Wisconsin doesn't mandate a single statewide inventory form for all counties, but many counties provide their own templates or preferred formats. The inventory generally needs to be organized in a clear, itemized format a simple spreadsheet won't usually satisfy the court's expectations. If you're unsure what format to use, our template and example inventory documents can give you a practical starting point.

Check with the probate court in the county where the estate is being administered. Some counties are stricter about formatting than others.

Can You Get Help Preparing the Inventory?

Yes. You're not expected to do everything alone. An attorney familiar with Wisconsin probate can guide you through the process, help with valuations, and make sure the inventory meets court standards. If the estate includes complex assets a business, out-of-state property, or significant investments professional help is especially worthwhile.

The Wisconsin State Bar offers a lawyer referral service that can connect you with a probate attorney. You can also reference the Wisconsin Court System's forms page for official probate-related documents.

What If You Discover More Assets After Filing?

If you find assets that weren't included in the original inventory maybe a forgotten account or property in another state you should file a supplemental inventory with the court. This is a normal part of the process. Courts expect it occasionally, especially in larger or more complicated estates. Don't try to quietly add items later without notifying the court. Transparency protects you.

Practical Checklist for Filing Your Wisconsin Executor Inventory

1. Get appointed make sure you have your official Letters of Office from the probate court before starting.
2. Set your deadline mark 90 days from your appointment date on your calendar.
3. Gather documents deeds, account statements, titles, appraisals, and anything that shows what the deceased owned.
4. Identify all assets search thoroughly. Check mail, email, tax returns, and safe deposit boxes.
5. Determine values use fair market value as of the date of death for each asset.
6. Check your county's format requirements contact the probate court or use a reliable template.
7. Review for completeness double-check that you haven't missed any accounts, property, or debts owed to the estate.
8. File the inventory submit it to the court within the 90-day window.
9. Keep copies retain a copy for your records and for the estate's file.
10. File a supplemental inventory if additional assets are discovered later.

Following these steps in order keeps you organized and reduces the chance of problems down the road. If you're feeling overwhelmed, start with what you know and work through it methodically. Most executors aren't professionals and courts understand that. What matters is that you're thorough, honest, and on time.