Family Dynamics

The Sibling Who Craves Power of Attorney—And Is the Wrong Person for the Job

Choosing a legal proxy isn’t an act of love; it’s a hiring decision for a high-stakes, unpaid management role.

By Neil D'Monte, Palmelle Editorial Team · Reviewed by Neil D'Monte · 7 min read · 2026-05-01

The lawyer’s office smells like stale coffee and expensive paper. Your brother, who hasn’t visited your mother in eighteen months, is suddenly very concerned about her bank accounts. He’s holding a pen, waiting for her to sign a document that hands him the keys to her entire existence. This isn't a scene from a prestige drama; it’s a Tuesday morning for thousands of families realizing that the person who wants power is usually the last person who should have it.

SHORT ANSWER

Power of Attorney is a job, not a trophy; if they can't handle the paperwork and the proximity, they shouldn't have the pen.

The direct answer

Power of Attorney (POA) should be granted based on proximity, organizational competence, and emotional stability—not birth order or a desire to 'keep things fair.' If a sibling has a history of financial instability, lives more than an hour away, or cannot handle high-stress conflict without shuting down, they are the wrong choice. The role requires managing $10,000+ monthly nursing home bills and making split-second care decisions that cannot wait for a return phone call.

The Job Description Nobody Tells You About

Being a Power of Attorney is a grueling, unpaid, part-time job that can easily consume 15 to 20 hours a week. It isn't just about 'signing checks.' It’s about reconciling Medicare Summary Notices, fighting with insurance companies over a denied $4,000 claim for physical therapy, and ensuring the property taxes on a vacant family home are paid before the city sends a lien notice.

Consider the math of a typical nursing home transition. You are often looking at a monthly burn rate of $9,000 to $14,000. A POA needs to be someone who can look at a 50-page contract from a care facility and identify exactly how the 'ancillary fees' will impact the remaining estate. If your sibling struggles to balance their own checkbook or misses their own credit card deadlines, handing them a six-figure estate is a recipe for a family lawsuit.

Beyond the numbers, there is the logistical weight. When a care facility calls at 2:00 AM because a parent has fallen, the POA needs to be reachable and rational. If the sibling in question has a history of 'going off the grid' during personal stress, they are a liability. You need a project manager, not a figurehead.

The 'Co-Agent' Trap and the Gridlock of Guilt

Well-meaning parents often appoint 'Co-POAs' to avoid hurting anyone's feelings. This is almost always a catastrophic mistake. In many states, co-agents must act unanimously. This means if your brother wants to keep the family home and you want to sell it to pay for memory care, the money stays locked in the house while the bills pile up.

We see this play out in the data. Facilities with high Palmelle Clarity Scores—those with clean state inspection records and transparent staffing—often require clear, decisive leadership from families. When a sibling duo is locked in a stalemate, the care quality suffers. The facility isn't going to wait for you two to work out your childhood baggage before they need a signature on a new care plan.

If the goal is 'fairness,' give the other sibling a different role. Make one the POA for finances and the other the 'Healthcare Proxy' (or Medical POA). Or, better yet, name one as the primary and the other as the successor. Fairness in an estate plan shouldn't come at the cost of operational efficiency. A deadlocked POA is functionally the same as having no POA at all, which leads straight to a court-ordered guardianship that will cost the estate $5,000 to $10,000 in legal fees just to get started.

Red Flags: When to Say No (and How to Say It)

There are three non-negotiable red flags for a POA candidate: financial instability, geographic distance, and emotional volatility. If a sibling has filed for bankruptcy in the last decade, they are legally and ethically disqualified from managing someone else's fiduciary interests. Many banks and brokerage firms will actually refuse to recognize a POA if the agent has a poor credit history or a record of financial judgments.

Distance is the second killer. While we live in a digital world, many nursing homes and local banks still operate on 'wet signatures' and physical presence. If your sibling is a six-hour flight away, they cannot effectively monitor the quality of life in a care facility. They won't notice the subtle smell of urine in the hallway or the fact that Dad's laundry hasn't been done in a week. They are making decisions in a vacuum.

Finally, look at emotional volatility. The POA will be the 'bad guy.' They will have to tell Dad he can't buy a new car, or tell a sibling they can't have an early inheritance. If your sibling craves approval or avoids conflict, they will fold under the pressure of a parent’s demands. You need someone who can say 'no' to a person they love while keeping a straight face and an open spreadsheet.

Common mistakes

Appointing the 'Favorite' Child
Being loved by a parent doesn't make you good at managing a $12,000/month care budget. It often makes the sibling too emotional to make the hard financial calls required to sustain long-term care.
Using a 'Springing' Power of Attorney
These only become active once a parent is declared 'incapacitated' by two doctors. This process can take weeks of appointments and paperwork, leaving bills unpaid and care decisions in limbo during a crisis.

PALMELLE'S VIEW

We look at the federal CMS and state inspection data every day, and the pattern is clear: the best outcomes happen when the person in charge is local and organized. A high Palmelle Clarity Score at a nursing home means nothing if the family spokesperson is too disorganized to approve the necessary care adjustments.

BOTTOM LINE

Power of Attorney is the most powerful tool in your family’s arsenal, and it belongs in the hands of the most competent person, not the loudest one. If you wouldn't hire your sibling to run a small business, don't hire them to run your parent's final years. Protect the estate, protect the care quality, and ultimately, protect the relationship by being honest about who is fit for the work.

WHEN THIS CHANGES

This advice changes if the sibling is the only living relative or if the parent has already been declared legally incompetent, at which point the focus shifts from choosing a POA to seeking court-appointed guardianship.

Frequently asked

Can I challenge my sibling's Power of Attorney if they are doing a bad job?

Yes, but it is an uphill battle. You must prove a 'breach of fiduciary duty,' which usually requires evidence of self-dealing, theft, or gross negligence. This typically involves hiring an elder law attorney and filing a petition in probate court to revoke the POA and appoint a guardian.

What happens if a sibling with POA refuses to share financial information?

Most states have laws requiring an agent under POA to provide an accounting to certain family members if requested. If they refuse, you can often compel an accounting through the court. Transparency is the best defense against sibling resentment; a good POA should be sending a monthly summary of expenses to all heirs.

Does Power of Attorney give my sibling the right to change a will?

Generally, no. A Power of Attorney is an 'inter vivos' (during life) document. It allows them to manage assets while the parent is alive but does not grant the power to rewrite a will or change beneficiaries on life insurance unless specifically and explicitly stated in the document—which is rare and often viewed as a red flag by courts.