Power of Attorney Sibling Disagreement

The Fight That Fractures Families

Power of attorney disputes are the sharpest edge of sibling caregiving conflict. The agent named in a financial POA may manage the parent's bank accounts, investments, and financial logistics; a healthcare agent may make medical decisions when the parent cannot. Siblings who don't hold POA often feel locked out, suspicious, and powerless — especially when they disagree with decisions the agent is making.

These disputes tend to surface in one of two scenarios: before the POA is created (who should be named?) or after it's in effect (is the agent acting properly?). Both scenarios can escalate to guardianship litigation if not addressed through structured conversation first.

Who Should Hold Power of Attorney?

While the parent has capacity, there is no sibling-by-birth-order default — the parent chooses who to name, and their decision should be based on practical qualifications rather than birth order or emotional closeness:

Geographic proximity matters for healthcare POA. The sibling who can get to the hospital within an hour during an emergency has a practical advantage over one who lives across the country. Healthcare decisions may involve meeting with discharge planners and advocating with medical staff, although the document and provider procedures determine how the agent participates.

Financial competence matters for financial POA. The sibling who manages their own finances responsibly — pays bills on time, understands insurance, can navigate banking systems — is a better fit than one who lives paycheck to paycheck or has a history of financial problems. This isn't a moral judgment; it's a capacity question.

These don't have to be the same person. Parents can name one child as financial POA and another as healthcare POA. This division often reduces conflict because it distributes authority and prevents any single sibling from controlling everything.

Co-agents are possible but tricky. Naming two siblings as co-agents may require them to act together on major decisions, depending on the document and jurisdiction. This sounds fair but creates practical problems: banks and medical providers sometimes balk at dual signatures, and if the co-agents disagree, the document becomes paralyzed until they resolve it. An alternative: name one primary agent with a duty to consult siblings and provide regular accountings, plus a successor agent if the primary is unable or unwilling to serve.

When the POA Holder Is Acting Properly but Siblings Disagree With Decisions

This is the most common scenario and the most frustrating. The POA holder is making legitimate decisions — selling the family home to fund care, changing doctors, hiring a home care agency — and other siblings disagree with the direction.

The uncomfortable truth: once a parent has granted power of attorney and the document is in effect, the agent has legal authority to act within the document's scope. Other siblings don't automatically get a veto. The agent's obligation is to the parent, not to the siblings' preferences.

However, the agent must follow the fiduciary duties imposed by the POA and applicable law, which commonly include:

• Act in the parent's best interest — not the agent's personal interest
• Keep accurate records of all financial transactions
• Keep the parent's assets separate from their own
• Provide an accounting or disclosure when the POA or applicable law requires it

If you disagree with the POA holder's decisions but they're acting within their authority and maintaining their fiduciary duties, your options are limited to persuasion, structured family meetings, and — if persuasion fails — mediation. An elder care mediator ($150-$400/hour) can facilitate a conversation about the disputed decisions with a neutral third party guiding the process.

When the POA Holder May Be Abusing Their Authority

This is a different situation entirely. Red flags that suggest POA abuse:

• Refusing to provide financial accountings when other siblings request them
• Unexplained withdrawals or transfers from the parent's accounts
• Isolating the parent from other family members (changing phone numbers, restricting visitors, moving the parent without informing siblings)
• Living off the parent's funds — paying their own mortgage, car payment, or personal expenses from the parent's accounts
• Selling the parent's property below market value to themselves or associates
• Making healthcare decisions that seem to benefit the agent rather than the parent (declining necessary treatment, choosing a facility that's convenient for the agent rather than appropriate for the parent)

If you suspect abuse, take these steps in order:

1. Document the concerns. Dates, amounts, specific incidents. "I think they're stealing" isn't actionable; "$4,200 withdrawn on June 12 with no corresponding care expense" is.
2. Request a formal accounting. Put it in writing. The agent should maintain records, and may have to provide an accounting under the POA or applicable state law.
3. Consult an elder law attorney. Initial consultations cost $250-$500. The attorney can assess whether the evidence supports a court petition.
4. File with Adult Protective Services or contact law enforcement if the exploitation is ongoing and the parent is at risk.
5. Ask an elder law attorney about court remedies such as seeking to revoke the POA or appoint an alternative agent or guardian where available.

When No POA Exists and the Parent Is Declining

This is the worst-case scenario and the most expensive to fix. If a parent has lost mental capacity without an effective power of attorney, the family may need a court proceeding for legal authority (called guardianship or conservatorship in some states).

Guardianship proceedings typically cost $5,000-$15,000+ in legal fees. If siblings compete for the role, each may hire their own attorney, increasing costs. The process takes months, creates adversarial dynamics, and may involve ongoing court oversight.

The court may appoint a professional guardian — a stranger — if siblings can't agree or if the judge determines that family conflict makes any family member unsuitable. The professional guardian may charge fees from the parent's estate.

This outcome is almost entirely preventable. If your parent still has capacity, even partial capacity, consult an elder law attorney immediately about executing POA documents. Capacity is decision-specific and depends on jurisdiction. Even after a dementia diagnosis, a parent may retain sufficient capacity for some legal documents; an attorney can assess the applicable threshold and execution requirements.

Alternatives to Guardianship

If a parent's capacity is borderline or if siblings want a less adversarial path:

• Representative payee (Social Security) or VA fiduciary — handles only federal benefit payments without requiring full guardianship
• A narrowly scoped banking arrangement may help with day-to-day expenses, but it does not replace a POA for real estate or investment decisions; get legal advice before changing account ownership
• Revocable living trust — the parent transfers assets into a trust while they have capacity, naming a successor trustee who takes over management when they become incapacitated

Building Consensus Before It Becomes a Legal Battle

The Sibling Conflict Over a Parent's Care guide includes structured meeting agendas, financial transparency worksheets, and a step-by-step process for families to navigate POA decisions — so you can resolve these disputes through documentation and negotiation rather than courtroom filings.