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A trust identification number is essential for identifying a trust as a legal entity for tax purposes. Whether you’re establishing a revocable or irrevocable estate planning trust, having the correct trust identification number is crucial to properly manage your assets. This number is always one of the following:

  • The grantor’s Social Security Number (SSN)
  • An Employer Identification Number (EIN) issued by the IRS

An EIN functions similarly to a Social Security Number but is specifically assigned to trusts and other legal entities. In trusts, an EIN does not relate to employment status.

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Factors Determining Your Trust Identification Number

The choice between using the grantor’s Social Security Number or obtaining an EIN depends on several important factors:

  • Whether the trust is revocable or irrevocable
  • Whether the grantor is currently alive or deceased
  • Whether the trust holds income-producing assets

Understanding Revocable Trusts

A revocable trust is generally treated as an extension of the grantor, meaning the grantor retains control over the trust and can modify or revoke it at any time. Income generated by trust assets is reported on the grantor’s personal tax return. Therefore, as long as the grantor is alive, the grantor’s Social Security Number serves as the trust’s identification number.

Understanding Irrevocable Trusts

An irrevocable trust is designed to separate property from the grantor’s control, typically to protect assets for beneficiaries after the grantor’s death. If the trust holds only non-income-producing assets (such as a personal residence), the grantor’s Social Security Number may still be used as the trust identification number.

However, if the irrevocable trust contains income-producing assets, or if the grantor has passed away, the trust must obtain an EIN from the IRS to serve as its unique identification number.

When Is an EIN Required?

Regardless of trust type, an EIN must be obtained when the grantor dies, as the grantor’s Social Security Number is no longer valid for identifying the trust. Additionally, an EIN is necessary if:

  • The trust holds income-generating assets
  • The grantor elects to obtain an EIN for the trust

Obtaining an EIN involves completing IRS forms that require details about the trust and grantor. This process can be completed online, by mail, or by fax. Many individuals seek guidance from an estate planning attorney to ensure accuracy. When applied for online, the IRS issues the EIN immediately.

For more information, visit the IRS EIN application page.

Summary: Which Trust Identification Number Applies?

  • Revocable trust: Use the grantor’s Social Security Number while the grantor is alive; switch to an EIN upon their passing.
  • Irrevocable trust: Use the grantor’s Social Security Number if the trust holds only non-income-producing assets and the grantor is alive; otherwise, use an EIN.

Frequently Asked Questions

What is the difference between an EIN and a Social Security Number for a trust?

An EIN is a unique identifier assigned by the IRS specifically for trusts and businesses, whereas a Social Security Number identifies an individual. Trusts may use either depending on their status and asset types.

Can I use my Social Security Number for my trust indefinitely?

No. While the grantor is alive and the trust is revocable, the grantor’s Social Security Number is used. Once the grantor passes or the trust becomes irrevocable with income-producing assets, an EIN is required.

How do I apply for an EIN for my trust?

You can apply online at the IRS EIN application page, by mail, or fax. Working with an estate planning attorney can simplify the process.

Do I need an attorney to get a trust identification number?

While not legally required, consulting an experienced estate planning attorney ensures your trust is set up correctly and the right tax ID is obtained.

Contact Russo Law Group, P.C.

Choosing the correct trust identification number is a vital part of effective estate planning. The experienced attorneys at Russo Law Group, P.C., specialize in revocable and irrevocable trusts and can guide you through every step.

Contact us today or attend one of our free seminars and webinars to learn more about protecting your assets and ensuring your wishes are honoured.

Comments (11)

  1. My aunt created a trust with my social security number. I am a trustee and one of the beneficiaries. Should ‘t She have used her SS number? Are there any negative tax consequences for me?

    1. Thanks for reaching out to us.

      In order to properly advise you as to your question, we would need to review the legal documents.

      If interested in our law firm advising you, please contact our office at 516-683-1717.
      Please note this reply is informational only and not legal advice. You should seek the services of an attorney for legal advice.

      Sincerely Yours
      Janet Corsetti, Client Service Coordinator

  2. I am interested in taken control of my SSN. Obtaining an EIN and more. Please email me or provide a contact.

    1. Thank you for your email.

      It sounds like you have a Trust. If you are looking for a tax identification number, you can contact the attorney who helped you execute the document to make sure they didn’t already obtain one.

      Please Note: This reply is informational only and not legal advice. You should seek the services of an attorney for legal advice.

  3. My aunt died during covid & my sister-in-law is in charge of the trust. Aunt & Trustee both lived & live in NY but had a home summer home in NJ which is what the trust is in reference to. We need an attorney because there are issues & sister-in-law is not forth coming. What state do I get an attorney with, NY where she lived, trust was written & trustee lives or NJ where real property is? Thank you so much!!!!

    1. Thanks for reaching out to us.

      In order to answer this question, we would need to have a more detailed discussion about the Trust to properly advise you.

      We are available to arrange for a meeting with one of our experienced attorneys. We will also answer any questions that you may have regarding our services and legal fees.

      Please contact our office at 516-683-1717 and we will be happy to assist you.

      Please note this reply is informational only and not legal advice. You should see the services of an attorney for legal advice.

  4. My father passed in 2023. There was an EIN number created in Ohio by US Bank for his estate, and another created in VA for the probate. Trying to the estate taxes, the IRS rejects both EIN numbers. THe numbers we are entering are correct, as is the date of creation, and the title.

    Where can we go to get this fixed? My tax consultant and myself are baffeled…..

    1. Sorry to hear that your father passed away.
      This is a designated IRS contact for EIN issues.
      Your accountant may want to contact the IRS to resolve your issue by writing to:
      IRS
      333 West Pershing Road
      Mail Stop 6055 S – 2
      Kansas City, MO 64108
      Fax # 855-867-4118

      Good luck!

  5. If a grantor revocable trust is assigned an EIN can the grantor report the trust income directly on his personal tax return without filing a grantor trust fiduciary tax return even though the income from form 1099 was reported in the trust EIN? Seems the should have just used the grantors social security number for the income producing investment account.

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