Illinois Power of Attorney Act: What Families Need to Know Before a Dementia Diagnosis

The Illinois Power of Attorney Act (755 ILCS 45) governs two separate documents that together cover every decision you might need to make for an aging parent — healthcare choices and financial management. Most families don't realize Illinois splits these into completely different statutory forms until they're standing in front of a banker who won't release their parent's funds, or a doctor asking whether to proceed with a procedure.

If your parent has been diagnosed with dementia or is showing early signs of cognitive decline, getting these documents signed is the single most time-sensitive legal task your family faces. Once capacity is gone, the Power of Attorney Act can no longer create a POA — broad financial authority may require guardianship through probate court.

The Two Statutory Forms Under 755 ILCS 45

Illinois law creates two distinct powers of attorney:

Power of Attorney for Health Care (Article IV) — authorizes your designated agent to make medical decisions, including end-of-life care, medication management, and facility placement. The Illinois version specifically covers mental health treatment decisions, which matters enormously for dementia care.

Power of Attorney for Property (Article III) — covers financial management: banking, bill payment, real estate transactions, tax filings, insurance claims, and Medicaid applications. Without this document, you cannot access your parent's accounts, sell property to fund their care, or complete a Medicaid spend-down.

Both forms are governed by the same statute but must be signed separately. One does not substitute for the other.

Signing Requirements That Trip Families Up

Illinois requires the principal (your parent) to sign both POA forms while they still have cognitive capacity to understand what they're signing. The specific requirements:

• The Health Care POA needs one witness (who cannot be the designated agent)
• The Property POA must be notarized
• Neither form requires an attorney to prepare, but the principal must demonstrate understanding of what they're authorizing

The critical issue is whether your parent understands the nature and consequences of the document at signing. If they no longer do, they may not be able to validly sign a POA.

What the Health Care Surrogate Act Covers (and Doesn't)

If your parent loses capacity without signing a Healthcare POA, the Health Care Surrogate Act (755 ILCS 40) provides a statutory backup. It can allow a designated family surrogate to make medical decisions without court involvement, but it does not grant the broad financial or property authority of a Property POA.

When POA Is No Longer an Option

If your parent already lacks capacity to sign and broad authority is needed, petition the Circuit Court for guardianship under the Illinois Probate Act (755 ILCS 5/11a). This requires a physician's examination within three months of filing, a court hearing, and costs that vary by county and case complexity.

The physician's examination must occur within three months of filing; overall timing depends on the county and whether the case is contested. Financial authority still requires a valid Property POA or guardianship, while the Health Care Surrogate Act may provide a medical decision-making route.

Practical Steps for Families Facing a Dementia Diagnosis

If your parent still has periods of lucidity, act now:

1. Download the Health Care form from the Illinois Department of Public Health and the Property form from the Guardianship and Advocacy Commission (both are free official state forms)
2. Complete and sign the Health Care POA with one witness present
3. Complete and sign the Property POA before a notary
4. Deliver copies to your parent's primary bank, primary care physician, and any care facilities
5. Store originals in a fireproof location accessible to the designated agent

The Illinois Dementia & Memory Care Guide includes step-by-step instructions for completing both POA forms, a capacity-conversation script for approaching a reluctant parent, and the exact timeline for when guardianship becomes necessary instead.

Getting ahead of the capacity issue is the single decision that saves Illinois families the most money and grief downstream — a $0 POA form today versus a guardianship petition later.

See more Illinois guides →