The Ultimate Guide to Signing Documents as a Power of Attorney: Everything You Need to Know
- Linda Varga
- Aug 26
- 4 min read

Introduction
Signing a document as a Power of Attorney (POA) requires careful understanding of legal authority and responsibility. When you step into the shoes of an attorney-in-fact, you hold a fiduciary responsibility to act in the best interests of another individual. Whether it’s managing financial transactions, making health care decisions, or handling real estate closings, knowing the proper procedures and signature format for these legal documents is essential. This blog post explores how to sign a document as a Power of Attorney, highlighting the legal obligations, common mistakes, and steps to ensure you stay within the boundaries of authority.
What is a Power of Attorney?
A Power of Attorney is a legal document that grants one person, the "attorney-in-fact," the authority to act on behalf of another person, known as the "principal." This document outlines the specific powers given to the attorney-in-fact, whether it's for financial, medical, or other legal matters. The powers can range from limited, such as handling a specific transaction, to broad, encompassing a wide array of decisions.
Types of Powers of Attorney:
General Power of Attorney: Grants broad powers for various transactions, including financial and legal.
Durable Power of Attorney: Remains in effect if the principal becomes incapacitated.
Health Care Power of Attorney: Allows the attorney-in-fact to make medical decisions on behalf of the principal.
Financial Power of Attorney: Provides authority for managing financial transactions and assets.
1. Who Can Sign as a Power of Attorney?
Before understanding how to sign documents as a Power of Attorney, it's important to clarify who qualifies as an attorney-in-fact. An attorney-in-fact is a person designated in the Power of Attorney document to act on behalf of the principal. This person can be a family member, friend, or trusted professional. However, they must be over the age of 18 and mentally competent.
Fiduciary Responsibilities:
As the attorney-in-fact, you are entrusted with fiduciary duties, meaning you must act in the best interests of the principal. These duties are not only ethical but legal obligations. Some of the key responsibilities include:
● Acting with loyalty and good faith.
● Avoiding conflicts of interest.
● Keeping accurate records of all transactions.
● Not using the power of attorney for personal benefit.
2. How to Sign Documents as a Power of Attorney
When signing a legal document as a Power of Attorney, it’s crucial to use the correct format and make it clear that you're signing on behalf of someone else. Here is a general guideline for the signature format:
Signature Format:
Step 1: Sign your name.
Step 2: Write “as Attorney-in-Fact for [Principal’s Name].”
For example:
● John Doe, as Attorney-in-Fact for Jane Doe.
This format clearly indicates that the document is being signed by the attorney-in-fact and not the principal, thus ensuring that you are acting within the authority granted to you.
Common Documents to Sign
Financial transactions such as bank transfers or loan agreements.
Real estate closing documents.
Health care directives and medical decisions.
Contracts involving business dealings.
Important Considerations:
Clarification of Powers: Be sure that your Power of Attorney document specifically authorizes you to sign certain types of documents. If unclear, seek legal clarification.
Transaction Authority: Certain transactions, like real estate closings or the sale of assets, may require additional documentation or notarization.
Liability: You are legally responsible for any unauthorized transactions. Fraud, forgery, or other violations can lead to civil lawsuits or criminal charges.
3. Managing Financial and Health Care Affairs
As an attorney-in-fact, your authority extends to handling the financial and health care affairs of the principal, as long as the Power of Attorney document grants this authority. Here’s a breakdown of these two major areas:
Financial Power of Attorney:
A financial Power of Attorney allows you to manage the principal’s financial matters. This could involve signing checks, managing investments, paying bills, or handling real estate transactions.
● Real Estate Closing: If you’re responsible for a real estate transaction, you’ll need to sign documents related to the sale or purchase of property.
● Transactions: For business dealings or bank transactions, ensure that you are acting within the specific powers granted to you. Unauthorized transactions can result in fraud charges or civil lawsuits.
Health Care Power of Attorney:
The health care Power of Attorney enables you to make medical decisions on behalf of the principal in case they are unable to do so themselves.
● Medical Decisions: If the principal is incapacitated, you’ll have the legal authority to make decisions regarding treatments, surgeries, or end-of-life care.
● Clarification: Ensure the health care power of attorney document outlines specific instructions about what medical decisions you can make. Without clear instructions, you may be unsure of your authority in certain situations.
4. Common Mistakes to Avoid
While the role of an attorney-in-fact is vital, many make mistakes that can have significant legal consequences. Some of the most common errors include:
Lack of Understanding the Powers Granted: Always read the Power of Attorney document thoroughly to avoid acting outside your authority. Powers of Attorney language can be complex and confusing.
Not Acting in the Principal’s Best Interest: Acting in your personal benefit, rather than the principal’s, is a breach of fiduciary duty. This can lead to accusations of fraud or forgery.
Overstepping Boundaries: Be cautious not to engage in unauthorized transactions, such as transferring property or signing contracts not covered by the Power of Attorney.
Failure to Keep Proper Records: Failing to document your actions as an attorney-in-fact can open you up to liability issues or legal disputes.
Not Having the Document Notarized: Some legal documents require notarization. If you fail to properly notarize a document, it may not be legally valid.
Conclusion
Signing a document as a Power of Attorney involves understanding both the responsibilities and limits of your authority. It’s crucial to follow the proper signature format, act within the scope of the authority granted, and manage affairs ethically. If you’re unsure about any aspect of your role as an attorney-in-fact, seek legal clarification to avoid mistakes that could lead to criminal charges, liability, or fraud.
Let Us Help You Do It Right
At Moravec, Varga & Mooney, we can advise you if you need assistance with signing a legal document as a Power of Attorney or if you have any questions about your fiduciary duties. We are here to guide you through the complexities of powers of attorney and ensure your actions remain within the law.
Call us today for professional legal assistance and peace of mind.


