The Legal Reality at 18
Utah law treats 18-year-olds as full legal adults. That is true regardless of whether they are leaving for a mission in two weeks or two years. The moment they turned 18, their bank accounts, tax filings, vehicle registration, medical records, and any other legal or financial matters became theirs alone — and yours to manage only with their explicit written authorization.
Most parents discover this the hard way: a notice arrives, a bill goes unpaid, a tax return needs to be filed, or — in the worst cases — their missionary comes home seriously ill and no one has the authority to speak with the hospital. A missionary power of attorney prevents all of it.
The window is narrow. Documents must be signed by your missionary before a notary. Once they enter the MTC or leave the country, arranging proper execution becomes complicated. Get this done before they go.
Document One: The Financial Power of Attorney
A financial power of attorney authorizes you — or another trusted person — to act on your missionary's behalf for financial and legal matters while they serve. This is a limited power of attorney, meaning it is drafted to cover only what is actually needed for the mission period and can be set to expire automatically when they return home.
What it allows you to handle
- Bank accounts — deposits, withdrawals, transfers, and account management
- Federal and state tax returns — filing and signing on their behalf
- Vehicle — registration renewal, insurance, and if needed, sale or title transfer
- Student loans and financial aid — deferment requests, correspondence, and account management
- Mail and legal documents — accepting, signing, and responding to documents that arrive in their name
- Real property — handling any property interests they may have
- Government benefits or accounts — social security, savings bonds, and similar
What it does not need to cover
Day-to-day decisions during the mission — where to serve, how to handle their health while in the field, finances provided by the Church — are managed through the mission president and the Church's established processes. The financial power of attorney handles what is happening back home in their name, not what is happening in the mission field.
Document Two: The Advance Health Care Directive
A financial power of attorney covers money and legal matters. It does not give anyone authority to make medical decisions. For that, your missionary needs an advance health care directive — sometimes called a health care power of attorney.
Most missionary parents think about this only in the context of something going wrong in the field. But the more common scenario is closer to home: a missionary returns with a serious illness or injury and cannot speak for themselves. Without a health care directive in place, no one — not even a parent — has the legal authority to receive information from their doctors or make treatment decisions on their behalf.
An advance health care directive names a health care agent (typically a parent) to make medical decisions if the missionary is unable to do so, and can record their wishes regarding treatment and end-of-life care.
Why both documents matter
A financial POA without a health care directive leaves a gap. A health care directive without a financial POA leaves a different gap. Both are straightforward to prepare together, and together they give parents the authority to handle whatever arises — financial or medical — while their missionary is away.
How the Documents Are Structured
Limited scope
A missionary financial POA is typically drafted as a limited power of attorney — it grants authority only for the specific acts needed during the mission period, rather than the broad general authority of a full durable POA. This protects your missionary by ensuring the document cannot be used beyond its intended purpose.
Built-in expiration
Under Utah law, a power of attorney can be written to terminate automatically on a specific date or when a named event occurs. A missionary POA is commonly drafted to expire when your missionary returns home, so there is no need to formally revoke it — it ends on its own.
Proper execution
For a financial power of attorney to be valid under Utah law, it must be signed by the principal — your missionary — and acknowledged before a notary public. An advance health care directive has its own signing requirements. Both documents need to be executed correctly to be accepted by banks, hospitals, government agencies, and courts. I prepare and supervise the execution of both so they hold up when needed.
Who Should Be Named as Agent
For a missionary POA, the agent is almost always a parent. If both parents want authority, they can be named as co-agents or as alternates — one primary, one successor. The document can also name a backup agent in case the primary agent is unavailable.
One practical consideration: if your missionary will be filing taxes, the IRS has its own requirements for third-party authorization. In some cases, a separate IRS Form 2848 (Power of Attorney and Declaration of Representative) may be needed alongside the state law financial POA to authorize a parent to deal with federal tax matters on behalf of a non-practicing taxpayer. I can advise on whether this applies to your situation.
What I Do for Missionary Families
- Draft a limited financial power of attorney tailored to your missionary's specific situation — the financial accounts, property, and matters they need covered
- Draft an advance health care directive naming a health care agent and recording treatment preferences
- Supervise proper execution of both documents before a notary so they are legally effective
- Advise on IRS authorization if federal tax representation is needed
- Provide guidance on how to present the documents to banks, institutions, and health care providers
Frequently Asked Questions
-
Yes. The moment your child turned 18, they became a legal adult and you lost all authority over their finances and medical decisions — regardless of how long they will be gone. Without a power of attorney, you cannot access their bank account, file their taxes, handle their vehicle registration, or make medical decisions on their behalf if they return home ill or injured.
-
Adding a joint owner to an account is one option for a specific account, but it does not give you authority over their other finances — taxes, vehicle, student loans, mail, or legal documents. A financial power of attorney covers all of those, and a health care directive addresses medical decisions if they return home ill or injured, which a joint account cannot do.
-
Yes. Under Utah law, a financial power of attorney must be signed by the principal and acknowledged before a notary public to be valid. An advance health care directive has its own execution requirements. I handle the proper execution of both documents so they are legally effective.
-
A missionary power of attorney can be drafted to expire automatically on a specific date or when a named event occurs — such as the missionary's return home. This limits the authority granted to just the period of service. Alternatively, your missionary can revoke it in writing when they return.
-
The documents must be signed by your missionary before a notary, which means they need to be present for signing. If they have already left, you will need to wait until they return or arrange notarization abroad, which varies by country. This is the strongest reason to get the documents in place before they enter the MTC.