Glossary term

Power of Attorney

A power of attorney is a legal document that authorizes one person to act on another person's behalf in specified matters.

Updated

May 17, 2026

Read time

3 min read

What Is a Power of Attorney?

A power of attorney is a legal document that authorizes one person to act on another person's behalf in specified matters. The person granting authority is often called the principal. The person receiving authority may be called an agent or attorney-in-fact.

Financial powers of attorney are common in estate planning, elder-care planning, and household financial management. They can allow someone trusted to handle banking, bills, investments, taxes, real estate, insurance, or other financial tasks if the principal cannot or does not want to act personally.

Key Takeaways

  • A power of attorney gives an agent authority to act for the principal.
  • The document can be broad or limited, depending on its terms and state law.
  • A durable power of attorney can continue after the principal becomes incapacitated.
  • Choosing the agent is a serious financial and fiduciary decision.

What the Document Can Cover

A power of attorney can be narrow or broad. A limited document might authorize one real estate closing. A broader financial document might let the agent pay bills, manage accounts, file taxes, sign documents, or handle insurance and benefits.

The powers granted should be spelled out clearly. Banks, brokerages, title companies, and government agencies may have their own acceptance procedures, even when a document is legally valid.

Type

Typical Use

General financial power of attorney

Broad authority over financial and property matters.

Limited power of attorney

Authority for a specific task or transaction.

Durable power of attorney

Authority continues if the principal becomes incapacitated.

Springing power of attorney

Authority begins only after a stated event, such as incapacity.

Agent Responsibilities

An agent should act within the authority granted and in the principal's interest. That can include keeping records, avoiding self-dealing, separating funds, and following the principal's estate plan and financial instructions where applicable.

The role can be powerful. A poorly chosen agent can misuse funds, fail to pay bills, sell assets improperly, or create family conflict. The document should match the principal's trust level, practical needs, and state-law requirements.

Where It Fits in Planning

A power of attorney does not replace a will, trust, beneficiary designation, healthcare directive, or guardianship plan. It handles authority during life. A will handles property after death. A healthcare directive or proxy handles medical decisions.

Because state laws differ, the right document and signing formalities depend on the jurisdiction. This entry is educational, not legal advice.

The Bottom Line

A power of attorney lets someone act for another person in specified matters. In financial planning, it is one of the core documents for continuity, incapacity planning, and trusted help with money decisions.

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