Power of Attorney between siblings: why do you need it?

Siblings who share an inheritance, a family home or a joint account can grant a single power of attorney so one sibling, several siblings or a neutral third party can represent everyone, without traveling. Each sibling signs before a notary and, if the document will be used abroad, gets an apostille. At Notaria Latina, we notarize and apostille it.

Key takeaways

  • Several siblings can grant power of attorney to one sibling, to several siblings or to a neutral third party.
  • You decide whether multiple agents must act together (jointly) or can act independently (separately).
  • Signing rules depend on the state: New York and Florida require a notary and two witnesses; New Jersey requires a notary only.
  • For use in another country, the power of attorney usually needs an apostille and must meet that country's requirements.

Why do siblings need a power of attorney?

When several siblings own something together, every important decision usually requires all of their signatures. If some of them live in the United States and the property or account is in their country of origin, getting everyone in the same place can be expensive or simply impossible. A power of attorney solves that: one or more people can sign on behalf of the others.

The most common situations are:

  • Accepting or distributing an inheritance after a parent passes away.
  • Selling a family home or land owned by several siblings.
  • Managing shared property: collecting rent, paying taxes or arranging repairs.
  • Handling joint bank accounts or investments.
  • Representing the family in a legal or administrative proceeding.

Who can be the agent?

Option Advantages Watch out for
One sibling Fast and simple: one person signs, coordinates and reports. Can create mistrust if the others feel excluded. Set written limits and reporting.
Several siblings acting jointly More control: important decisions need more than one signature. Slower, and one unavailable or disagreeing sibling can block the process.
Several siblings acting separately Maximum flexibility: whoever is available can sign. Decisions can be made without consensus. Requires a high level of trust.
A neutral third party Reduces tension between siblings; an attorney or trusted relative follows written instructions. May involve professional fees; choose someone with no conflict of interest.

General or special power of attorney?

  • General power of attorney: lets the agent handle a wide range of matters, such as signing contracts, dealing with banks and managing property. It is flexible, but it gives a lot of authority to one person.
  • Special (limited) power of attorney: covers one specific transaction, such as selling a particular property or accepting a specific inheritance. It is safer for shared assets because the agent can only act within the described scope.

Tip for selling family property: in a special power of attorney you can include safeguards such as the property's exact description, a minimum sale price, how the proceeds will be distributed and the obligation to report to all siblings. Clear limits prevent most family conflicts.

Signing requirements by state

Even if the power of attorney will be used in another country, it must first comply with the law of the state where it is signed:

State Notary Witnesses
New York Required 2 disinterested witnesses for powers of attorney under state law; the notary may be one of them
New Jersey Required Not required
Florida Required 2 subscribing witnesses

Ask the notary which formalities apply to your document, especially if it is drafted for use in another country.

How to create a power of attorney between siblings, step by step

  1. Agree on what you need: the transaction, the type of power of attorney, who will be the agent, whether agents act jointly or separately, and how long it will last.
  2. Confirm the destination country's requirements: ask the notary, bank or authority that will receive the document whether it needs a specific wording, language or registration.
  3. Prepare the document with each sibling's full name and ID number, the agent's details, a precise description of the property or matter, and the exact powers granted.
  4. Sign before a notary, with witnesses if your state requires them. Each sibling must sign in person or through online notarization.
  5. Get an apostille from the state where it was notarized, if it will be used in a Hague Convention country.
  6. Send the original to the agent and keep a scanned copy.

What if the siblings live in different states or countries?

They do not need to sign the same document on the same day. Each sibling can sign an identical power of attorney before a notary where they live. Keep in mind that each document is then apostilled in the state (or country) where it was notarized. Siblings living abroad can usually sign before a local notary with an apostille, or at their country's consulate.

Siblings in different places? At Notaria Latina, we can prepare identical documents for each sibling, notarize them at our offices in New York, New Jersey or Florida, or online, and handle the apostille for each one, so the whole family's paperwork arrives consistent and complete.

Common mistakes to avoid

Mistake How to avoid it
Not stating whether agents act jointly or separately Say it explicitly in the document to avoid disputes and rejections.
Using a general power when a special one is enough For one sale or inheritance, a special power gives everyone more protection.
Different wording in each sibling's document Use the same text for all siblings so the authority abroad can accept them together.
Signing without the required witnesses In New York and Florida, sign before a notary and two witnesses.
Skipping the apostille or translation Check the destination country's rules before sending the document.
Forgetting a spouse's consent In some countries, a married sibling's spouse must also consent to sell shared property.

Important: inheritances and property sales abroad often require legal proceedings in the destination country before the property can be sold. For these cases, consult an attorney in that country. A notary in the United States notarizes your signature but cannot give legal advice.

Get your power of attorney between siblings with Notaria Latina

With more than 15 years of experience serving the Latino community in the United States, Notaria Latina helps you prepare your power of attorney in English or Spanish, notarizes it with the witnesses your state requires, and handles the apostille and the certified translation when needed. We serve clients in person and online.

Toll-free: 1-800-742-8602 · Book an appointment online

Legal notice: I am not an attorney licensed to practice law and may not give legal advice about immigration or any other legal matter or accept fees for legal advice.

Frequently asked questions

1Can two siblings have power of attorney?

Yes. Two or more siblings can be named as agents. The document should state whether they must act together (jointly) or can act independently (separately).

2Can several siblings sign one power of attorney?

Yes, if they can all sign before the same notary. If they live in different places, each can sign an identical document before a notary where they live.

3What happens if one sibling refuses to sign?

No one can be forced to grant a power of attorney. The others can only be represented in what belongs to them; for the rest, other legal options may be needed in the country where the property is located.

4Is a power of attorney signed in the United States valid in Latin America?

Usually yes, if it complies with the law of the state where it was signed, has an apostille, and meets the requirements of the destination country, such as translation or local registration.

5Can a sibling revoke the power of attorney?

Yes. Each sibling can revoke the power they granted, as long as they notify the agent and the institutions where it was presented.

6What should we do if siblings disagree after signing?

Review the limits and decision rules in the document. If there is a serious conflict or possible misuse, consult an attorney and consider revoking the power of attorney.

About the author

Photo of Cecilia Guizado

Advisor  · 1 years of experience

Public Notary in the U.S. expert in powers of attorney, apostilles, translations, and online notarization. Reliable, fast, and tailored service.

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