Michigan Power of Attorney Requirements: Signing, Witnesses, and Notarization

Getting a power of attorney wrong in Michigan means the document is worthless when you need it most — and the rules changed significantly in 2024. Here's what's actually required under the current law.

Financial POA Requirements (UPOAA)

The Michigan Uniform Power of Attorney Act (MCL 556.201–556.505) governs all financial powers of attorney signed on or after July 1, 2024. Requirements:

The principal must sign the document. If the principal is physically unable to sign, another person may sign on their behalf in the principal's conscious presence, but the principal must direct them to do so.

The signature must be either notarized OR witnessed by two people who are not the named agent. Both options create a legally valid, durable POA. But the practical difference is significant:

• A notarized POA triggers the mandatory bank acceptance protections under MCL 556.220. Banks must accept it within seven business days or face court orders and liability for attorney fees.
• A witnessed-only POA is valid but doesn't carry the statutory presumption of genuineness, giving banks more room to delay.

The principal must initial each category of authority they want to grant. The UPOAA statutory form (MCL 556.401) lists authority categories — banking, real property, taxes, benefits, insurance — and the principal checks each one individually. Unchecked categories are not granted.

"Hot powers" require separate explicit authorization. Gifting, trust modifications, and beneficiary designation changes must be individually initialed in the Grant of Specific Authority section. They are never implied by a general grant.

Patient Advocate Designation Requirements (EPIC)

Healthcare decision-making authority in Michigan requires a completely separate document: the Patient Advocate Designation (PAD), governed by MCL 700.5506. The requirements are stricter and different from the financial POA:

Two qualified, disinterested witnesses must watch the principal sign. Notarization cannot substitute for witnesses on a PAD — this is a common mistake that voids the document entirely.

Witness disqualification rules are strict. Under MCL 700.5506(4), the following people cannot serve as witnesses:

• The principal's spouse, parent, child, grandchild, or sibling
• A presumptive heir (anyone who would inherit if the principal died today)
• A known beneficiary under the principal's will or trust
• The named patient advocate or successor advocate
• The principal's attending physician
• An employee of the principal's health insurance provider
• An employee of the treating healthcare facility

In practice, this means you often need to find two unrelated friends, neighbors, or coworkers to witness.

The named advocate must sign a written acceptance containing specific statutory language about their fiduciary duties before they can legally act. This is a separate signature, not just being named in the document.

A PAD is strictly "springing." The advocate has zero authority until the principal's attending physician and one other physician or licensed psychologist formally determine that the principal cannot participate in their own treatment decisions. There is no "immediate" option for healthcare POAs in Michigan.

Common Mistakes That Invalidate Michigan POAs

Using a family member as a PAD witness. Your adult child cannot witness your Patient Advocate Designation, even though they may be the most convenient option. If they're also a presumptive heir, the entire document is void.

Assuming one document covers both financial and medical decisions. Michigan maintains strict separation. A financial POA under the UPOAA grants zero medical authority. A Patient Advocate Designation grants zero financial authority.

Not getting the financial POA notarized. While legally valid with two witnesses, a witnessed-only financial POA will face resistance at banks. The $10 notary fee eliminates this friction entirely.

Not having the advocate sign a formal acceptance. A Patient Advocate who hasn't signed the statutory acceptance form cannot legally act, even if they're named in the document and the principal is incapacitated.

What Happens Without Valid Documents

Without a valid financial POA, family members cannot access accounts, pay bills, or manage property when someone becomes incapacitated. They must petition the county probate court for a conservatorship ($175 filing fee, four to eight weeks minimum, plus attorney fees that regularly exceed $3,000).

Without a valid PAD, medical decisions fall to a court-appointed guardian through a separate petition ($175 filing fee), leaving the family unable to direct treatment during the weeks-long process.

The Michigan Power of Attorney Kit includes both documents with a witness screening checklist that identifies who qualifies — and who doesn't — under each document's specific rules.

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