Answering: My Sibling Has Power of Attorney — What Are My Rights?

Estimated reading time: 11 min read

You have rights. Real, enforceable, written-into-Texas-law rights. And I know that reading those words might bring up a whole wave of emotions, because if you’re searching for this, you’re probably not in a calm place right now. You’re watching your sibling make decisions about your parent’s money, their care, their entire life, and nobody asked you. That pit in your stomach? It’s telling you something.

You’re watching your sibling make all the decisions about Mom’s care and money, and something doesn’t feel right. Maybe they sold her car without asking anyone. Maybe they won’t explain where her savings went. Or maybe they just moved her to a cheaper facility while their own lifestyle mysteriously improved. You deserve answers, and Texas law agrees with you.

The reality is that most families don’t fight over power of attorney because someone is evil. They fight because one sibling got authority, the rest got silence, and nobody established ground rules. But here’s what nobody tells you: the absence of ground rules doesn’t mean the absence of legal obligations. A POA holder in Texas has a fiduciary duty to your parent, and that duty is enforceable whether they know about it or not. Ignorance of the standard doesn’t erase the standard.

With 28 years of applying fiduciary audit standards in corporate finance, I can tell you that the same accountability framework used in billion-dollar subsidiaries applies to your family’s situation. At The Proactive Caregiver, I help families distinguish between a sibling making bad decisions and a sibling acting in bad faith. Those require very different responses. Let’s break down what the law actually says, what your rights are, and what red flags should move you to action.

Key Insights

• Texas Estates Code gives every interested family member the right to demand a full accounting of POA transactions, and refusal to provide one is itself grounds for court intervention.
• Theft by fiduciary is a felony in Texas when amounts exceed $2,500, which means your concerns aren’t “family drama”; they’re potentially criminal.
• The difference between a disagreement and financial abuse often comes down to one thing: whether the POA holder will show you the receipts.

Keep reading for full details below.

Table of Contents

• What POA Actually Means Under Texas Law
• Your Legal Rights as a Non-POA Sibling
• Red Flags That Cross Into Financial Abuse
• Closing
• Frequently Asked Questions
• Want to Learn More?
• Citations

What POA Actually Means Under Texas Law

Power of attorney is not ownership. It’s a job with rules. Under Texas Estates Code Section 752.051, a POA creates a fiduciary relationship. That means the agent must act solely in your parent’s best interest. Not their own convenience. Not their interpretation of what Mom “would have wanted.” Your parent’s documented best interest, period.

Here’s where families get confused. Your sibling may believe that being named POA means they have total authority to do whatever they think is right. In practice, Texas law applies a “reasonable person standard.” Every financial decision must be defensible as what a prudent person would do in similar circumstances. For example, if your sibling moved Mom from a $6,500-per-month memory care facility to a $3,200-per-month place with lower staffing ratios, a court can examine whether that decision served Mom’s care needs or the POA holder’s bank account.

POA also does not override your right to information. You are legally entitled to know where your parent’s money is going. Requesting transparency isn’t an accusation. Under Texas Estates Code Chapter 752, it’s a legal entitlement. Most guides tell you to “have a conversation” first. That’s fine. But know that your request for an accounting carries legal weight even before an attorney gets involved.

From my 28 years applying audit standards in corporate finance, I read POA compliance the same way auditors read financial controls. Every dollar tracked, every risk modeled.

• Request a copy of the actual POA document in writing via certified mail. Understand its scope, limitations, and whether it permits self-dealing. Keep the signed receipt.
• Document every request for information and every response with dates, times, and specifics. This paper trail becomes evidence if you need court intervention later.

Understanding the legal framework is step one. But knowing your specific rights as the sibling without POA is where this gets actionable.

Your Legal Rights as a Non-POA Sibling

You can force an accounting. That’s not a request dressed up in legal language. It’s a mechanism built into Texas law for exactly this situation. If you formally request a complete accounting of all financial transactions made on your parent’s behalf and the POA holder refuses within 30 days, you can petition the probate court in your parent’s county of residence for a court-ordered accounting.

If your concerns go beyond poor communication into suspected theft, Texas Adult Protective Services (1-800-458-9858) accepts reports of financial exploitation and has authority to investigate. Misuse of POA for personal gain constitutes theft by fiduciary, a felony in Texas for amounts over $2,500. That criminal threshold exists so you can report without being dismissed as a bitter sibling stirring up drama.

Any interested person, including you, can also petition the court to remove a POA agent, limit their powers, or require co-approval for transactions above a certain dollar amount. I’ve seen families where one sibling withdrew $4,000 monthly in “care expenses” with no receipts while their parent ate institutional food in a facility with one aide per twelve residents. The court intervened within 60 days of the petition.

• Send a written request for accounting via certified mail. List specific transactions: the car sale, large withdrawals, facility changes, transfers. Keep copies and the certified receipt.
• If the POA holder refuses within 30 days, contact a probate attorney in your parent’s Texas county. Most offer free initial consultations. They’ll tell you whether your facts support a court petition or a negotiated resolution.

But before you call an attorney, you need to know what separates a family disagreement from something far more serious.

Red Flags That Cross Into Financial Abuse

The single clearest indicator of financial abuse is refusal to show receipts. Not “I’ll get to it.” Not “You don’t trust me?” Flat refusal to document where your parent’s money went. That refusal alone violates Texas fiduciary duty and can trigger court intervention or an APS investigation.

Watch the lifestyle comparison. If your parent’s quality of life is declining, less medical care, cheaper housing, increased isolation, while the POA holder suddenly paid off credit cards, bought a new vehicle, or renovated their kitchen, that pattern is the financial profile of elder exploitation. It’s the same pattern forensic accountants flag in corporate embezzlement cases. The money flows from the vulnerable party to the person with access.

Other red flags that prosecutors and forensic accountants look for: new joint accounts with the POA holder as co-owner, beneficiary designations quietly changed, property sold below market value to the POA holder’s associates, or sudden isolation of your parent from other family members combined with financial control. That combination, isolation plus financial access, is the classic setup for undetected exploitation.

At The Proactive Caregiver, I teach families that the $750,000 average cost of unmanaged dementia care gets exponentially worse when a POA holder is draining assets simultaneously. If your parent has $300,000 in savings and unexplained transfers are running $5,000 monthly, waiting six months costs $30,000 in additional losses.

• Create a detailed timeline. Dates, amounts, witnesses, observations. Specific facts get investigated. Vague accusations get dismissed.
• Gather accessible bank statements, property records, and facility bills. If you can’t access them, document the refusal. That refusal is itself reportable and actionable under Texas law.

Closing

Sibling POA rights in Texas aren’t theoretical. They’re enforceable. The accounting request, the court petition, the APS report: these are tools designed for exactly the situation you may be facing. Knowing the difference between bad judgment and bad faith is a CPA skill, and it’s the skill that protects your parent’s assets and quality of life when the stakes are highest. If you need help building that financial clarity, with the same audit-level precision I applied across 28 years of corporate finance, a discovery call is the place to start:

https://proactivecaregiver.com/discovery-call/

Frequently Asked Questions

Q: Can I challenge my sibling’s power of attorney in Texas?

A: Yes. You can petition the probate court in your parent’s county of residence under Texas Estates Code Chapter 752 if you have evidence that your sibling (the POA agent) breached their fiduciary duty by self-dealing, refusing accounting, or misusing funds. The court can require a full accounting, limit the POA holder’s powers, or remove them entirely. Before filing, send a certified letter requesting accounting and offer mediation; if your sibling refuses or you discover transactions over $2,500 that benefit them personally, file with the court or report to Texas Adult Protective Services (1-800-458-9858). Document everything—dates, amounts, witnesses, refusals to provide information—because courts need evidence, not suspicions.

Q: How do I know if my concerns about my sibling’s POA decisions rise to the level of financial abuse?

A: The difference between a disagreement over care decisions and reportable financial abuse comes down to three things: refusal to account for money, a pattern where your parent’s quality of life declines while the POA holder’s improves, and transactions that benefit the POA holder personally (new joint accounts, property sales to themselves, changes to beneficiary designations without documented consent). A CPA auditing a corporate balance sheet asks the same questions: where did the money go, who authorised it, and does it pass the ‘reasonable person’ test? If your sibling won’t answer those questions in writing, that’s a red flag worth reporting to APS or exploring with a probate attorney.

Q: What’s the best first step before hiring a lawyer or reporting my sibling?

A: Send a formal written request for accounting via certified mail, listing specific transactions you want explained (car sales, large withdrawals, facility transfers, account changes). Keep copies and the certified receipt. This accomplishes three things: it creates a documented paper trail, it gives your sibling a fair chance to respond voluntarily, and it demonstrates good faith if you later need to file a court petition or speak with an attorney. Most probate attorneys in Texas offer free initial consultations to evaluate whether your specific situation justifies legal action versus negotiated resolution.

Q: If I report my sibling to Adult Protective Services, does that automatically go to court or create a legal case?

A: APS investigates reports of suspected financial exploitation, asset misappropriation, and neglect, but reporting doesn’t automatically trigger a court case or criminal prosecution. APS can file civil or criminal charges if the evidence supports elder abuse, or they may work toward resolution with the family. Filing a report protects you legally—it’s a formal record that you acted responsibly when you had concerns—and it triggers an independent investigation separate from family dynamics. You can also pursue a civil court petition for accounting simultaneously; these are parallel processes, not either-or decisions. An elder law attorney can advise whether reporting to APS, filing a court petition, or both makes sense for your parent’s specific situation.

Want to Learn More?

We’ve drawn on decades of experience in fiduciary standards, corporate finance governance, and lived dementia caregiving to create this guide for families navigating sibling POA rights in Texas. The core principle remains constant: accountability, transparency, and asset protection—whether you’re auditing a $12 billion corporate subsidiary or protecting your parent’s $300,000 in savings.

Citations

• “Texas Estates Code Section 752.051 (Findlaw)” — This statute establishes the fiduciary duty requirement for all POA holders in Texas, mandating that agents act solely in the principal’s best interest and maintain detailed records of all transactions. Understanding this legal standard is essential for determining whether your sibling’s actions comply with their legal obligations. https://codes.findlaw.com/tx/estates-code/est-sect-752-051/
• “Texas Estates Code Chapter 752: Statutory Durable Power of Attorney” — The complete statutory framework governing POA creation, enforcement, and accountability in Texas. This is the legal foundation that gives any interested person (including non-POA siblings) the right to petition for accounting and court intervention if fiduciary duties are breached. https://statutes.capitol.texas.gov/Docs/ES/htm/ES.752.htm
• “Texas Estates Code Chapter 752 (Full Statute)” — The comprehensive reference for fiduciary duties, record-keeping requirements, prohibited self-dealing, and remedies available when a POA holder violates their legal obligations. Courts rely on this statute to enforce accountability and protect the principal’s assets. https://statutes.capitol.texas.gov/GetStatute.aspx?Code=ES&Value=752

Texas Estates Code Chapter 752 mandates strict fiduciary duty and accounting standards for all POA holders; breaches are enforceable through probate court petition by any interested person, including non-POA siblings. The $2,500 felony threshold for theft by fiduciary exists specifically to protect families from the financial exploitation scenario you may be witnessing, and the 30-day accounting response window creates a clear legal timeline for demanding transparency before escalating to court or regulatory action.

If you’d like to learn more, visit https://proactivecaregiver.com/discovery-call/ to explore how we approach protecting your parent’s assets and your family relationships while navigating sibling POA rights in Texas.