Documents6 min read

Power of Attorney: The Document You Need Before You Need It

M
Marcus Williams, CFP
Certified Financial Planner
February 10, 2026
6 min read
Power of Attorney: The Document You Need Before You Need It

A durable power of attorney is one of the most powerful legal documents you can create — and one of the least understood. Here's everything you need to know.

What Is a Power of Attorney?

A power of attorney (POA) is a legal document that authorizes someone else — your "agent" or "attorney-in-fact" — to act on your behalf in financial and legal matters.

A durable power of attorney remains effective even if you become incapacitated. A regular power of attorney terminates upon incapacity — which is precisely when you need it most.

Types of Power of Attorney

General Durable POA: Broad authority over financial matters — banking, investments, real estate, taxes, and more.

Limited POA: Authority for a specific transaction or time period.

Springing POA: Only takes effect upon a specific event, such as incapacity (requires a doctor's certification).

Choosing Your Agent

Your agent has enormous power. Choose someone who is:

Trustworthy and honest
Organized and detail-oriented
Willing to act in your best interest, not theirs
Geographically accessible

What Your Agent Can (and Cannot) Do

A POA agent can manage your finances, pay bills, file taxes, and manage investments. They generally cannot:

Change your will
Make gifts to themselves (unless specifically authorized)
Act after your death (the executor takes over)

Healthcare POA vs. Financial POA

These are separate documents. A healthcare POA (or healthcare proxy) authorizes someone to make medical decisions. A financial POA covers financial and legal matters. You need both.

Disclaimer: This article is for informational purposes only and does not constitute legal advice. Estate planning laws vary by state. Please consult a licensed estate planning attorney for advice specific to your situation.