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Form 56, Notice Concerning Fiduciary Relationship

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Acting in a fiduciary capacity expands your ethical responsibilities to clients, as you must always act in their best interests. Taking on this role can also add to your paperwork, which may already be substantial if you’re a registered investment advisor (RIA). One document you’ll need to familiarize yourself with is IRS Form 56, Notice Concerning Fiduciary Relationship.1 It’s important to know when this form is required and what information to include.

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Understanding IRS Form 56

Form 56 is the document advisors use to notify the IRS of the creation or termination of a fiduciary relationship under section 6903 of the Internal Revenue Code (IRC). It also relates to the reporting of fiduciary relationships under section 6036. This form is required when a fiduciary relationship is created or terminated for the specific purpose of one individual or entity managing the tax affairs of another.

The IRS defines a fiduciary as “any person in a position of confidence acting on behalf of any other person … who assumes the powers, rights, duties, and privileges of the person or entity on whose behalf he or she is acting.” 2 Examples of fiduciaries under this definition include conservators, executors and trustees.

Form 56 is designed to ensure transparent and accurate communication between the fiduciary in question and the IRS. Failing to file this form on time could limit your ability to take certain actions on behalf of clients in tax-related matters.

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When Is Form 56 Required?

Form 56 is mandatory when an individual or entity assumes a fiduciary role on behalf of someone else to manage their tax situation. Here are some common examples of when the IRS requires this form:

  • Parents name their oldest child as the executor of their will. Once they pass away, the oldest child must complete Form 56 to let the IRS know who is handling the parents’ estate and final tax filing.
  • A spouse applies for conservatorship after their spouse is diagnosed with a cognitive disease that affects their ability to care for themselves. As conservator, the spouse would be responsible for filing Form 56.
  • A debtor files for bankruptcy protection. The bankruptcy trustee must file Form 56 to let the IRS know they’re qualified to manage the debtor’s assets during the proceedings.

Do financial advisors need to fill out Form 56? Not if your services are limited to providing tax planning advice to clients. However, if you’re entering into a fiduciary relationship with a client for the specific purpose of managing their tax affairs in a situation involving an executorship, conservatorship or bankruptcy, this form is required.

If you plan to act as an authorized representative on behalf of a client in a tax matter, such as an audit, a separate form is required. You’ll need to complete and submit Form 2848, Power of Attorney and Declaration of Representative.

Form 56 Fiduciary Instructions

A couple consult with their advisor on whether they need to file Form 56.

The fiduciary, not the person on whose behalf they are acting, must complete Form 56 and submit it to the IRS. Here’s an overview of what you’ll need to provide if you’re expected to submit this form:

Part I: Identification

The first part of Form 56 is used to identify the fiduciary and the person on whose behalf they are acting. Here, you’ll need to fill out the following:

  • Name and address of the person for whom you’re acting as a fiduciary
  • Their Social Security Number or employer identification number (EIN)
  • Your name and address

Section A: Authority

In the next section, you’ll tell the IRS under what authority you’re acting as a fiduciary. You’ll check all of the applicable boxes from the following list:

  1. Court appointment of testate estate (valid will exists)
  2. Court appointment of intestate estate (no valid will exists)
  3. Court appointment as guardian or conservator
  4. Fiduciary of intestate estate
  5. Valid trust instrument and amendments
  6. Bankruptcy or assignment for the benefit of creditors
  7. Other (you’ll need to briefly describe the circumstances)

If you checked the first, second or fourth boxes, you’ll enter the person’s date of death on line 2a. If you checked the third, fifth or sixth boxes, you’ll need to enter the date of appointment, taking office or assignment/transfer of assets.

Section B: Nature of Liability and Tax Notices

This section of Form 56 is used to share information about the type of assets a fiduciary will manage on behalf of someone else. There are three parts to complete.

  1. Type of taxes (check all that apply from income, gift, estate, generation-skipping transfer, employment, excise tax or other)
  2. Federal tax form number (check all that apply)

The third part directs you to check the box if your authority as a fiduciary doesn’t cover all years or tax periods. If that’s the case, you can fill in the years or periods covered by your authority.

Part II: Revocation or Termination of Notice

Part II is used to notify the IRS that you’re ending or revoking a notice of fiduciary relationship. There are three parts.

  1. Section A must be completed if you’re revoking or terminating all prior notices and specify the reason why.
  2. Section B must be completed if you’re revoking an earlier notice for specific tax matters only.
  3. Section C allows you to tell the IRS if a new fiduciary has been or will be substituted, and who the new fiduciary is.

Part III: Court and Administrative Proceedings

If there are any court or administrative proceedings relating to fiduciary actions the IRS needs to be aware of, you’ll include them here. Specifically, you’ll need to share:

  • The name of the court
  • The address of the court
  • The date, time and place that proceedings occurred or will occur

Part IV: Signature

In the last section, you’ll sign the document and include your title if applicable. You’ll also add the date you signed Form 56. Your signature tells the IRS that the information provided is accurate and truthful.

When and Where to File Form 56

Except for fiduciaries who are assignees for the benefit of creditors, you have 90 days to file the form from the date the fiduciary relationship is established. If you’re filing Form 56 as a fiduciary advisor, you’ll mail it to the IRS Service Center where the person for whom you’re acting is required to file their tax returns, or submit it electronically. The IRS maintains a list of service centers online to help you find the correct one for form submissions.

Frequently Asked Questions (FAQs)

Can you submit Form 56 electronically?

The Modernized e-File (MEF) system accepts electronic filings of Form 56 through an approved business provider.3 Entities and individuals that use the MEF system to file tax returns electronically can submit Form 56 without having to mail a paper copy.

Is there a penalty for filing Form 56 late?

The IRS could impose penalties on fiduciaries who do not file Form 56 promptly. For that reason, it’s important to complete and submit the form as soon as possible following the creation or termination of a fiduciary relationship.

Are all financial advisors fiduciaries?

Financial advisors are not automatically held to a fiduciary standard. Becoming a fiduciary typically depends on your role or legal obligations, not solely on acquiring specific certifications or designations. Financial advisors, specifically RIAs and Certified Financial Planners™, also carry a fiduciary responsibility to their clients, but they are not specifically mentioned in the IRS definition. Fiduciaries are bound by an ethical standard that requires them to act in a client’s best interests at all times.

Bottom Line

Form 56 is an important document that can’t be overlooked when entering into a fiduciary relationship or ending one.

Form 56 is an important document that can’t be overlooked when entering into a fiduciary relationship or ending one. Knowing which forms you’re required to file with the IRS can help you avoid compliance missteps.

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Article Sources

All articles are reviewed and updated by SmartAsset’s fact-checkers for accuracy. Visit our Editorial Policy for more details on our overall journalistic standards.

  1. “About Form 56, Notice Concerning Fiduciary Relationship | Internal Revenue Service.” Home, https://www.irs.gov/forms-pubs/about-form-56. Accessed 18 Mar. 2026.
  2. Instructions for Form 56. IRS, https://www.irs.gov/pub/irs-pdf/i56.pdf.
  3. “Modernized e File Program Information | Internal Revenue Service.” Home, https://www.irs.gov/e-file-providers/modernized-e-file-program-information. Accessed 18 Mar. 2026.
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