7 min read · Last updated October 14, 2026
- Holding power of attorney does not give one sibling exclusive control over a parent’s care or money. The agent has a fiduciary duty and, in most adopting states, a duty to disclose records to other family members who ask in good faith.
- Other siblings, even without power of attorney, can typically petition a court for an accounting of the agent’s financial records if they suspect mismanagement.
- A written, fair-market-value caregiver agreement signed before services begin protects a caregiving sibling’s payment from being treated as a gift that could trigger a Medicaid penalty.
- Siblings cannot unilaterally override a validly executed power of attorney by disagreeing. Court involvement, petitioning for an accounting, limiting the agent’s authority, or seeking guardianship, is the real recourse.
Holding power of attorney for a parent does not give one sibling exclusive control over care decisions or money. Under the fiduciary duty rules most states have adapted from the Uniform Power of Attorney Act, an agent who holds that authority must act in good faith and, in many states, disclose financial records to other family members who ask with a legitimate concern.
In this article
- What power of attorney gives a sibling, and what it doesn’t
- Legal tools for when siblings can’t agree
- The paid caregiver agreement that protects everyone
- The mistake that turns a disagreement into a legal mess
- Frequently asked questions
For instance, three adult siblings share responsibility for their mother’s care, and only one, Renee, holds her financial power of attorney. When their mother’s savings dropped faster than the other two expected, they asked Renee for an accounting of what the money had paid for. She assumed the document gave her full discretion and declined, but state law said otherwise.
What power of attorney gives a sibling, and what it doesn’t
Virginia’s enactment of the Uniform Power of Attorney Act, at Va. Code § 64.2-1612, is representative of the model most states have adopted in some form, though the exact wording varies by state. It requires an agent to “act in good faith,” “act loyally for the principal’s benefit,” and “keep a record of all receipts, disbursements, and transactions made on behalf of the principal.” On request from specified family members who raise a good-faith concern about the principal’s well-being, the same statute requires the agent to disclose the extent of the actions taken and permit reasonable inspection of records.
That is the opposite of unlimited discretion. An agent’s authority exists to serve the parent, and the record-keeping duty exists specifically so someone can check that it was used that way.
Legal tools for when siblings can’t agree
When an informal request for records gets refused, as Renee’s did, several real legal tools exist short of a permanent family rift.
| Tool | What it does | Who can typically use it |
|---|---|---|
| Elder mediation | A neutral third party facilitates discussion to help the family reach its own agreement, without a court order | Any family member, informally, no filing required |
| Petition for an accounting | A court orders the agent to produce financial records and transaction history | Under Virginia’s statute, the principal’s spouse, parent, or descendant, a sibling, or the principal’s caregiver |
| Petition to limit or remove the agent | A court can suspend, limit, or terminate the agent’s authority if duties were violated | Same interested parties as the accounting petition |
| Guardianship or conservatorship petition | A court appoints a substitute decision-maker, which can include co-guardians, when informal arrangements break down entirely | Any interested party, generally used as a last resort |
Research on elder mediation specifically, published in the Journal of Gerontological Social Work and summarized by the National Library of Medicine, describes it as “a growing subspecialty to address conflicts involving older adults, primarily involving caregiving or finances,” using a neutral facilitator rather than a judge. It is usually the fastest and least adversarial option, which is why most elder-law attorneys recommend trying it before filing anything in court.
Virginia’s statute on judicial relief specifically lists a sibling among the people who can petition a court for discovery of an agent’s records when the agent “has violated duties of disclosure.” What it does not provide is an informal, self-help way for a sibling to simply override the agent’s decisions by disagreeing. Court involvement, not a family vote, is the actual mechanism.
The paid caregiver agreement that protects everyone
Renee’s mother pays her $1,800 a month under a written agreement, signed before the caregiving began, for the actual hours of help Renee provides, matching what a licensed home-care agency charges in their area. Because the payment is tied to real services, priced at fair market value, and made close in time to when the care was given, it is not treated as an uncompensated gift.
That distinction matters for two separate reasons. The first is family trust: a written agreement shows the other siblings exactly what Renee is being paid for, instead of leaving them to guess whether money moving to one sibling is fair. The second is Medicaid.
Under the United States Code (U.S.C.), specifically 42 U.S.C. § 1396p(c), transferring assets for less than fair market value inside Medicaid’s five-year lookback period can make an applicant ineligible for nursing-facility-level benefits for a penalty period. State Medicaid rules, such as Washington’s, spell out what keeps a payment to a family caregiver from counting as that kind of disqualifying transfer: a documented care need, fair-market-value pricing, and payment made close in time to when the service was actually performed, generally no more than about a month’s delay. Putting the arrangement in a signed, written agreement before care begins is not itself a line item in the regulation, but it is the standard way elder-law practice proves every one of those conditions after the fact.
An undocumented cash payment from a parent to a caregiving sibling, made with good intentions and no paperwork, can fail every one of those tests at once.
The mistake that turns a disagreement into a legal mess
Families often wait until a Medicaid application or a sibling dispute forces the question, then try to reconstruct a caregiving arrangement after the fact. Both problems, family suspicion and a Medicaid penalty, are solved by the same document: a written caregiver agreement, signed before services start, at a price that matches the local market. Writing it down early is cheaper than defending it later, in either a family conversation or a Medicaid application.
Frequently asked questions
Can my sibling who holds power of attorney refuse to show me the bills? Not entirely, in most states. An agent generally owes a fiduciary duty that includes record-keeping, and many states require disclosure to specified family members who raise a good-faith concern. If an agent refuses, a petition for an accounting is the usual next step.
What can I actually do if I think my sibling is mismanaging our parent’s money? Start with a direct, documented request for records. If that is refused, elder mediation is typically the fastest next step, and a court petition for an accounting or to limit the agent’s authority is available if mediation does not resolve it.
Does paying a sibling to provide care put Medicaid eligibility at risk? Only if it is undocumented or priced above fair market value. A written agreement, signed before care begins, tied to real hours of service and local market rates, is the standard way elder-law practice protects both the caregiver’s payment and the parent’s future Medicaid eligibility.
What is a petition for accounting and how long does it take? It is a court filing asking a judge to order the agent to produce financial records and transaction history. Timelines vary by state and court caseload, so ask a local elder-law attorney for a realistic estimate in your jurisdiction before assuming a specific number of weeks.
Is mediation legally binding? Not on its own. Mediation produces an agreement the family chooses to follow, not a court order, though a family can ask a court to formalize a mediated agreement afterward if everyone wants that extra enforceability. For more on structuring a paid family caregiver arrangement, see our guide on paying a sibling caregiver without triggering Medicaid’s lookback rule.
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