To get power of attorney for your daughter now that she is 18, she has to sign one giving it to you. A power of attorney is a document the principal creates voluntarily; you cannot make one for another adult, even your own child. Once she turned 18, your automatic authority as a parent to handle her money, talk to her doctors, or sign documents on her behalf ended by operation of law.1Legal Information Institute. Age of Majority What you can do is sit down with her, decide together what authority she wants you to have, put it in writing, and execute the document with the signatures and notarization your state requires.
Why This Suddenly Matters at 18
The age of majority is 18 in most states, with a few setting it at 19 or 21. On that birthday her legal status changes completely. You can no longer call her bank, read her medical chart, or sign paperwork for her. Families often discover this the hard way when a daughter leaves for college and a parent tries to sort out a billing problem, a tuition question, or an emergency room visit and is told, politely, that they have no standing.
A power of attorney closes that gap on her terms. With the right documents in place, you can pay her bills while she studies abroad, deal with an insurance claim after a car accident, or speak with her doctors if she is hospitalized and unable to speak for herself. Without one, you would have to go to court to get permission to do any of those things.
The Documents She Needs to Sign
Most families end up with two or three separate documents rather than one, because financial authority and medical authority are handled differently, and access to medical records has its own federal rules.
Durable Financial Power of Attorney
This gives you authority over her money and property: bank accounts, bill paying, investments, taxes, leases. The word “durable” is what matters. It means your authority continues if she later becomes mentally incapacitated.2Consumer Financial Protection Bureau. What Is a Power of Attorney (POA)? Without durability language, the POA would end at the exact moment she needs it most. Many states presume durability under the Uniform Power of Attorney Act, but not all do, so the safe move is to put the durability language in the document explicitly.
Medical Power of Attorney
Sometimes called a healthcare proxy, this lets you make medical decisions if she cannot communicate her own wishes. It is a separate document from the financial POA. It covers consenting to or refusing treatment, choosing providers, and directing care in emergencies.
Under federal privacy law, someone who holds authority to make healthcare decisions for a patient is treated as that patient’s “personal representative” and has the same right to see medical records the patient would have.3U.S. Department of Health and Human Services. Does Having a Health Care Power of Attorney Allow Access to the Patient’s Medical and Mental Health Records Under HIPAA A medical POA usually activates only when the patient lacks capacity, though, so there is a window where your daughter might be conscious but too sick to pull her own records for you.
Standalone HIPAA Authorization
A separate HIPAA release solves that window. It lets her name specific people who can access her medical information at any time, without waiting for the medical POA to kick in. Estate planning attorneys routinely prepare it alongside the medical POA, and many hospitals offer their own version at intake.
Limited Power of Attorney
If she wants your help with one specific thing rather than broad authority, a limited (or special) POA narrows the grant to a defined task or time window. A daughter studying abroad for a semester might use one to let you sell her car, renew her lease, or complete a single banking transaction. Authority ends automatically when the task is done or the period expires.
Decisions She Has to Make
Who Serves, and Who Backs You Up
The document needs the full legal names and addresses of the principal and the agent. She should also name a successor agent, someone who steps in if you become unable or unwilling to serve. If there is no successor and something happens to you, she would need to execute a new POA, and if she were incapacitated by then, she could not.
How Much Authority to Grant
Most standardized forms list categories, such as banking, real estate, taxes, investments, and legal matters, that can be granted individually by initialing each one. She should think about what she actually needs handled rather than reflexively granting blanket authority. Broad powers make sense for emergency planning; narrow powers make sense for a single transaction while she is out of the country.
Two boundaries are worth knowing before she signs. A general financial POA does not automatically cover federal tax matters. To represent her before the IRS, you need Form 2848, signed by her, and the representative generally has to be someone eligible to practice before the IRS, such as an attorney, CPA, or enrolled agent.4Internal Revenue Service. About Form 2848, Power of Attorney and Declaration of Representative A POA also does not override FERPA. If she is in college and you want access to her grades or financial aid records, the school will require its own FERPA consent form.
Immediate or Springing
An immediate POA takes effect when signed. A springing POA activates only after a triggering event, usually a doctor’s written finding that the principal is incapacitated. Springing versions sound appealing because she keeps full control until something goes wrong, but in practice they create delays. Doctors are often reluctant to formally declare someone incapacitated, the definition can be contested, and banks and hospitals may refuse to honor an ambiguous document until a dispute is resolved. For most families, an immediate durable POA is more practical. She can trust you to only use it when it is actually needed.
Signing It So It’s Actually Valid
The document is not valid until she signs it, and execution rules vary by state. Nearly every state requires the principal’s signature to be notarized. Many also require one or two adult witnesses who are not the named agent, not related to the principal, and do not stand to benefit from the document. Some states require both notarization and witnesses. An improperly executed POA is simply void, so confirm your state’s specific requirements before the signing appointment.
She must have the mental capacity to understand what she is signing. The notary’s role is to verify her identity and confirm she is signing voluntarily. If capacity is in question at signing, the document can be challenged later.
Once signed, keep the original somewhere secure but accessible. You should hold either the original or a certified copy as agent. Send copies to any institution where you expect to use it: her bank, brokerage, landlord, insurance company, primary care physician.
Getting Banks and Hospitals to Accept It
This is where families most often get stuck. Banks in particular have a reputation for pushing back on valid POA documents. Some want their own internal forms filled out. Others route the document to a legal department for review that can take days or weeks.
Under the Uniform Power of Attorney Act, adopted in over 30 states plus the District of Columbia, a third party must accept a properly executed POA or ask for specific supplemental documentation, like an agent certification or legal opinion, within a set number of business days. A third party that unreasonably refuses can be ordered by a court to accept the document and may be liable for the attorney fees incurred in forcing compliance. Even states that have not adopted the uniform act often have similar acceptance statutes.
The single most useful step you can take is to have her contact her bank and other institutions before she signs. Ask whether they have formatting preferences or supplemental forms they want completed at the same time. Some will put a copy on file in advance so the document is already in their system when you need to use it. A POA presented to a bank for the first time in a crisis is far more likely to hit delays than one the bank has already seen.
What You Take On as Agent
Accepting a POA makes you a fiduciary. Your daughter’s interests come before your own in every decision you make for her. The Consumer Financial Protection Bureau identifies four core duties for anyone managing another person’s money under a POA:5Consumer Financial Protection Bureau. Help for Agents Under a Power of Attorney
- Act in her best interest. Every financial decision must benefit her, not you or anyone else.
- Manage her money carefully, the way a prudent person would, avoiding risky moves she has not specifically authorized.
- Keep her money separate from yours. Commingling funds creates confusion and legal exposure.
- Keep thorough records of every transaction and decision, so you can produce an accounting if a court, family member, or agency asks.
Violating these duties can lead to removal as agent, civil suits for damages, and in extreme cases criminal prosecution for financial exploitation.5Consumer Financial Protection Bureau. Help for Agents Under a Power of Attorney Most parents serving as agents for their adult children never face any of this, but the obligations start the moment you act under the document.
If She Cannot Sign
A POA requires the principal to have the mental capacity to consent. If she is already incapacitated because of a traumatic brain injury, severe mental illness, or a medical emergency, she cannot sign one, and no amount of parental concern changes that. In that situation the path is guardianship, called conservatorship in some states. You petition a court, a judge reviews evidence of incapacity, considers whether less restrictive alternatives exist, and if satisfied appoints someone to make decisions for her. It typically requires an attorney, involves hearings, and takes weeks or months. Ongoing court oversight, periodic reports, and legal fees make guardianship significantly more expensive and invasive than a POA. That is exactly why doing the paperwork now, while she is healthy and willing, matters.
What It Costs
Online POA templates and form-filling services typically run $35 to $100. Hiring an attorney to draft a custom package, which might include a financial POA, medical POA, HIPAA authorization, and living will, generally runs $250 to $500 for a straightforward situation, more for complex estates. Notary fees usually fall in the $10 to $25 range per signature. If the POA needs to be recorded in county land records because it grants real estate authority, recording fees typically run $10 to $65.
An attorney is not legally required in most states to create a valid POA. Given that the document hands someone control over her finances, health decisions, or both, the cost of professional drafting is modest compared to the cost of a document a bank refuses to honor or a court later invalidates.