How to Prepare an Illinois Estate Inventory

When someone passes away in Illinois, their estate doesn't just get handed over to family members. A court-supervised probate process kicks in, and one of the first responsibilities placed on the executor or administrator is preparing a detailed inventory of everything the deceased person owned. If you skip steps, miss assets, or file late, you can delay the entire probate case or face personal liability. Getting the estate asset inventory right from the start saves time, protects you legally, and helps beneficiaries receive what they're owed.

What Is an Estate Asset Inventory in Illinois?

An estate asset inventory is a formal written document that lists every asset the deceased person owned or had an interest in at the time of death. Under Illinois probate law (755 ILCS 5/19-1), the representative of the estate must file this inventory with the probate court. It includes real estate, bank accounts, vehicles, personal property, investments, business interests, and any other items of value.

The inventory isn't just paperwork. It sets the foundation for how the estate gets administered. The court, creditors, and beneficiaries all rely on it to understand what the estate contains. If you want a broader overview of how this fits into the full probate process, our Illinois probate estate asset inventory guide covers the bigger picture.

When Does an Executor Need to Prepare This Document?

Illinois law generally requires the inventory to be filed within 60 days after the executor or administrator is appointed by the court. This deadline is firm. If you need more time, you have to petition the court for an extension before the deadline passes.

You'll need to prepare an estate asset inventory if:

The deceased owned assets solely in their name (no joint ownership or beneficiary designation)
The estate is going through formal probate in an Illinois court
The court has appointed you as executor or administrator
Creditors may have claims against the estate

However, if the estate qualifies as a small estate typically under $100,000 in personal property with no real estate you may be able to use a small estate affidavit instead of going through full probate. This shortcut avoids the formal inventory filing requirement entirely, but it only applies in specific situations.

What Assets Do You Need to Include?

The inventory must cover all assets the deceased had a legal interest in on the date of death. This goes beyond what's obvious. Here's a practical breakdown:

Real Property

Houses, condos, and land owned solely by the deceased
Tenant-in-common shares in real estate (not joint tenancy, which passes automatically)
Timeshares or fractional property interests

Financial Accounts

Checking and savings accounts in the deceased's name only
Certificates of deposit
Brokerage and investment accounts
Retirement accounts without a named beneficiary (rare, but it happens)

Personal Property

Vehicles, boats, and recreational vehicles
Jewelry, art, collectibles, and antiques
Household furnishings and electronics
Cash kept at home or in a safe deposit box

Business Interests

Ownership stakes in LLCs, partnerships, or sole proprietorships
Shares in privately held corporations

Digital Assets

Cryptocurrency holdings (Bitcoin, Ethereum, etc.)
Paid digital media libraries with resale value
Revenue-generating websites or online businesses

Digital assets are often overlooked. If the deceased held cryptocurrency or owned a monetized online account, those need to be listed too. Our guide on inventorying digital assets in Illinois probate goes deeper into that topic.

How Do You Prepare the Inventory Step by Step?

Preparing the inventory takes organization and persistence. Here's how to work through it methodically:

Step 1: Gather Key Documents

Start by collecting the death certificate, will (if one exists), and your letters of office from the court. Then pull together bank statements, property deeds, vehicle titles, investment account statements, tax returns (the last two or three years are most useful), and any safe deposit box access paperwork.

Step 2: Identify and Locate All Assets

Go room by room through the deceased's home. Check mail for account statements you didn't know about. Review tax returns for interest income, dividend income, and rental income each of these points to an asset. Contact banks, brokerages, and insurance companies directly if you're uncertain about accounts.

Step 3: Determine Fair Market Value

Each asset must be listed at its fair market value as of the date of death. This is the price a willing buyer would pay a willing seller, with both having reasonable knowledge of the facts.

Real estate: Get a professional appraisal or use recent comparable sales
Vehicles: Use Kelley Blue Book or NADA guides
Bank accounts: Use the balance on the date of death
Investments: Use closing prices on the date of death
Personal property: For items of significant value (jewelry, art, collectibles), get an appraisal. Everyday household items can be grouped and estimated

Step 4: Identify Liens, Debts, and Encumbrances

If any asset has a mortgage, lien, or other debt attached to it, note that on the inventory. This affects the net value and helps the court understand the estate's true financial position.

Step 5: Complete the Official Inventory Form

Illinois courts use a standardized inventory form. Each county may have its own version. If the estate is in Cook County, check with the Cook County probate court for specific filing requirements. The form typically requires:

A description of each asset
The fair market value on the date of death
Whether the asset is jointly held or solely owned
Any liens or encumbrances

Step 6: File with the Court and Send Copies

File the completed inventory with the probate court clerk before the 60-day deadline. You also need to send copies to all interested parties typically the beneficiaries named in the will and any known heirs.

What Are the Most Common Mistakes Executors Make?

Errors on the estate inventory create real problems. These are the ones that come up most often:

Forgetting assets: Safe deposit boxes, small bank accounts, digital wallets, and forgotten life insurance policies get missed all the time. A thorough search of the deceased's records is critical.
Using wrong values: Listing the purchase price of an asset instead of the fair market value on the date of death is a frequent error. Real estate and investments fluctuate. Use date-of-death values only.
Filing late: The 60-day deadline is not flexible unless you ask the court in advance. Missing it can result in court sanctions or removal as executor.
Skipping jointly held property: Some jointly held assets (like joint tenancy with right of survivorship) pass outside probate and don't belong on the inventory. Others (like tenants-in-common shares) do. Mixing these up creates confusion.
Ignoring debts and liens: Listing an asset without noting that it carries a mortgage or lien gives an incomplete picture and can lead to distribution errors.
Not listing digital assets: Cryptocurrency, online payment accounts, and digital businesses are real property. Leaving them off the inventory can result in lost value for beneficiaries.

For a full breakdown of the probate process and how the inventory fits in, see our complete estate inventory guide for Illinois probate.

Do You Need an Appraisal for Every Asset?

No. You don't need a professional appraisal for every single item. The law requires a good-faith estimate of fair market value. That said, you should get a professional appraisal for:

Real estate (homes, land, commercial property)
Jewelry, art, or collectibles worth more than a few hundred dollars
Business interests in closely held companies
Any asset where the value is disputed or uncertain

For everyday household goods, you can group them into categories (furniture, electronics, kitchenware) and estimate a lump value. Courts don't expect you to price every coffee mug.

What Happens After the Inventory Is Filed?

Once the inventory is filed, it becomes a reference document for the rest of the probate process. Here's what follows:

Creditor claims: Creditors use the inventory to understand whether the estate can pay its debts
Distribution planning: The executor uses it to figure out how to divide assets according to the will or Illinois intestacy law
Tax filings: The values in the inventory help establish the estate's tax basis for both estate tax and income tax purposes
Court oversight: The probate judge may review the inventory to ensure the estate is being handled properly

If you discover additional assets after filing, you're required to file a supplemental inventory with the court. Don't assume the original filing is final if new information comes to light.

Quick Checklist for Preparing Your Illinois Estate Asset Inventory

Obtain your letters of office and at least 6 certified death certificates
Collect the deceased's financial statements, tax returns, property deeds, and titles
Search the home, safe deposit boxes, and digital accounts for hidden or forgotten assets
Contact banks, brokerages, and insurance companies for account confirmations
Determine fair market value for each asset as of the date of death
Get professional appraisals for real estate, valuable personal property, and business interests
Note all liens, mortgages, and encumbrances against each asset
Download the correct inventory form from your county's probate court
Complete the form accurately, listing every asset with its date-of-death value
File the inventory with the court within 60 days of your appointment
Send copies to all beneficiaries and interested parties
Keep organized records in case the court or beneficiaries have questions

Tip: If you're an executor handling this for the first time, consider consulting a qualified Illinois probate attorney through the Illinois State Bar Association before filing. Even a short consultation can prevent costly errors and help you meet every requirement on time.