Can a Power of Attorney Change a Will?

Families sometimes assume that whoever holds the power of attorney controls everything, including the will. That assumption can cause real conflict. The truth is that a power of attorney and a will do very different jobs, and one cannot rewrite the other.

For related help, see estate-planning help, power-of-attorney guide, and Washington probate guide.

A Power of Attorney and a Will Are Not the Same Tool

A power of attorney lets you name an agent to manage your affairs while you are alive. A will directs where your property goes after you die. Because these two documents operate at completely different moments, one during life and one at death, they are not interchangeable. An agent under a power of attorney acts for a living principal. A will speaks only once the person who made it has passed away and the document is admitted to probate.

This difference is the key to answering the question. An agent's job is to help the principal during life, not to control what happens to the principal's estate afterward. That is the will's territory, and the will belongs to the person who made it.

Making a Will Is a Personal Act

Under Washington law, making, changing, or revoking a will is a personal act that cannot be delegated to an agent. A person creating a will must have testamentary intent and testamentary capacity of their own. No one can supply that intent on someone else's behalf, and no power of attorney can transfer that ability to an agent. This is a bedrock principle: your will must reflect your own wishes, formed and expressed by you, not by someone acting in your place.

Because a will is so personal, an agent under a power of attorney has no authority to sign a new will for the principal, to add or remove beneficiaries in the will, or to revoke the existing will. Even a broadly worded power of attorney does not reach this far. The document can hand an agent enormous authority over bank accounts, real estate, and investments, and still not give the agent any power to touch the will itself.

What Washington Law Requires for the Powers an Agent Does Have

Washington's Uniform Power of Attorney Act, chapter 11.125 RCW, is careful about the most sensitive kinds of authority. It sets out a list of significant actions that an agent may take only if the power of attorney expressly grants that specific authority. These include creating, amending, revoking, or terminating a living trust, making a gift, creating or changing rights of survivorship, creating or changing a beneficiary designation, and making other provisions for nonprobate transfers at death. See RCW 11.125.240. In everyday terms, these are the powers that can reshape who receives a principal's property, so the law does not let an agent exercise them unless the document clearly says so.

What is striking about that list is what it does not include. Making, amending, or revoking the principal's will is not among the powers an agent can be granted, even by express language. The statute allows an agent to be empowered over trusts, gifts, survivorship rights, and beneficiary designations, but it does not offer the will as something a principal can delegate. That absence reflects the personal nature of will-making. A principal cannot hand off the power to write a will, because the law reserves that act for the principal alone.

What an Agent Can Do With Estate-Related Matters

None of this means an agent is powerless over a principal's estate planning. It means the agent's reach is bounded by what the document expressly authorizes and by what the law permits. If the power of attorney expressly grants the authority, an agent may create or amend a living trust, make gifts, or change a beneficiary designation on a life insurance policy or retirement account, subject to the limits in RCW 11.125.240. These actions can significantly affect how property passes, which is exactly why the statute demands an express grant and imposes additional safeguards.

Those safeguards matter. For example, RCW 11.125.240 provides that, unless the document says otherwise, an agent who is not the principal's spouse, registered domestic partner, ancestor, or descendant generally may not use the power to create a benefit for the agent through a gift, survivorship right, or beneficiary designation. The law works hard to prevent an agent from quietly steering the principal's property to the agent's own advantage. Even where an agent has real authority over estate-related matters, that authority is fenced in.

Why This Distinction Protects You

The rule that a power of attorney cannot change a will is not a technicality. It protects your final wishes from being altered by someone else while you are alive but perhaps vulnerable. It ensures that the document controlling your estate reflects your own decisions, made with your own capacity. And it gives families in Snohomish County confidence that a loved one's will means what the loved one intended, not what an agent later preferred.

If you want to be sure your power of attorney and your will work together the way you expect, without one accidentally undermining the other, careful drafting is essential. The Law Office of Chad Foster can help you build a plan where each document does its own job cleanly. Reach out when you are ready to put the right documents in place.