Many families use a revocable living trust to keep assets organized and to help with a smooth transition if something happens to the grantor. One of the most common practical questions is whether the trust needs its own taxpayer identification number—an Employer Identification Number (EIN)—and, if so, when. The answer depends on timing, what changed in the trust's status, and how institutions and tax filings need to be handled.
This article explains, in plain English, when a revocable trust can use a grantor's Social Security number, what events typically trigger the need for an EIN, what changes at death, and how to update accounts and records. Laws and procedures vary by state, and the right path can depend on the details of your trust and assets. Use this as general information and consider speaking with counsel about your specific situation. For related guidance, see How Do I Know If I Need a Revocable Trust?.
The quick answer: When a revocable trust uses a Social Security number vs. when it needs its own EIN
While the grantor (sometimes called the settlor or trustmaker) is alive and the trust is revocable, the trust is generally treated as a “grantor” trust for income tax purposes. In practice, this usually means: For related guidance, see Out-of-State Property: Using a Revocable Trust to Simplify Multi-State Ownership Transfers.
- Financial accounts titled in the name of the revocable trust may still report income under the grantor's Social Security number.
- Interest, dividends, and other taxable items typically flow through to the grantor's individual tax return.
That arrangement changes when the trust becomes irrevocable, which commonly occurs at the grantor's death. At that point, the trust often needs its own EIN so that income and reporting can be separated from the deceased individual's Social Security number.
There are also other moments—besides death—when an EIN may be required, including when a trust splits into separate shares, when a successor trustee takes over after the grantor has lost capacity and the trust changes form, or when a financial institution requires one for its internal policies. These triggers are discussed in more detail below.
Common triggers for needing an EIN: death of the grantor, irrevocability, subtrust funding, and bank or custodian requirements
Death of the grantor
At death, a revocable trust commonly becomes irrevocable. When that happens, the trust's income going forward is typically reported under a new EIN rather than the grantor's Social Security number. This helps separate the decedent's final personal income from post-death trust income.
Trust becomes irrevocable for another reason
Less commonly, a trust can become irrevocable for reasons other than death, such as a planned change in the trust's terms triggered by incapacity, an election made under the trust, or the expiration of a reserved power to revoke. When the trust's status changes and the grantor is no longer treated as the tax owner, an EIN is usually needed.
Subtrusts and separate shares funded after death
Many revocable trusts direct the creation of “subtrusts” after death, such as a marital trust, credit shelter trust, or continuing trusts for children. Each subtrust often needs its own EIN once it is funded, so that each can receive and report income separately and handle its own accounting.
Bank, broker, or custodian requirements
Even while the grantor is alive, some financial institutions prefer or require an EIN for a trust account as a condition of opening or maintaining the account. This is a policy choice by the institution. It does not necessarily change how the trust is treated for tax purposes, but it can drive the need to obtain an EIN sooner than expected.
Business interests and property management
Where a trust holds business interests, rental property, or other ongoing income-producing assets, an EIN may be needed to align with property managers, payroll, or vendors—even before death—depending on how those operations are structured. Coordination with your tax preparer is helpful to determine what number should be used for reporting.
What changes at death: tax filings, timing, and coordinating the trust with the estate
When the grantor dies, several practical changes occur around identification numbers and tax reporting:
- Separation of income: Income received before death is reported under the decedent's Social Security number; income received after death by the trust (or estate) is typically reported under a new EIN.
- Account re-registration: Financial institutions often require an EIN to retitle accounts in the name of the now-irrevocable trust or to establish subtrust accounts.
- Estate coordination: Some assets may pass through the estate, while others are administered under the trust. Each entity may need its own EIN, depending on how administration is handled.
- Information returns: Banks and brokers need updated information for post-death 1099 reporting to the correct entity.
Timing matters. Delays can cause 1099s to be issued under the Social Security number for income the trust actually received after death. That does not necessarily change the tax result, but it can create extra work, amended statements, or mismatches that complicate tax preparation. Promptly communicating the date of death to institutions, providing required documents, and obtaining an EIN for the trust are key steps.
If a probate estate will be opened, it may also need its own EIN. The trust and the estate are separate legal entities. Coordinating which assets and accounts are handled by each can prevent duplicate filings or missed income. A trustee and personal representative should communicate early about which EINs are needed and who will be responsible for tax reporting.
Midway through this process is an appropriate time to consider legal support. If you are serving as trustee or personal representative, speak with our firm about representation so we can help you obtain the right EINs, retitle accounts, and coordinate with tax preparers. To discuss hiring counsel, use our contact form or call 414-253-8500.
How to get an EIN and update accounts, titles, and beneficiary records
Applying for an EIN for a trust
An EIN can be requested from the IRS for the trust entity. The application identifies the trust, the trustee, the date the trust became irrevocable, and other basic information. The request can typically be made online, by fax, or by mail. Make sure you:
- Use the legal name of the trust as stated in the trust instrument.
- List the correct trustee and address for tax notices.
- Note the correct date the trust became irrevocable (often the date of death).
- Coordinate with the accountant regarding whether an estate will also obtain an EIN.
Updating financial accounts
After you receive the EIN, provide it to banks, brokerage firms, and other custodians along with their required documents. Many will ask for a certificate of trust or relevant trust pages, a death certificate if applicable, and identification for the trustee. Ask the institution to:
- Retitle accounts in the name of the trust or subtrust, as applicable.
- Update the reporting number to the trust's EIN for post-death income.
- Split accounts as directed by the trust into subtrusts with separate EINs.
Titles and property records
For real estate, review deeds, lender requirements, and insurance policies. Some changes can wait until later in administration, but others—like adding the trustee as an additional insured or updating the loss payee—may need attention sooner. For vehicles, boats, or other titled assets, follow your state's transfer procedures to reflect the trustee's authority.
Beneficiary designations and pay-on-death (POD)/transfer-on-death (TOD) accounts
Some accounts pass directly to named beneficiaries by designation. If those designations point to a trust share or subtrust, the custodian may need the new subtrust EIN. Coordinate with the custodian to ensure the designation is fulfilled as written and that the correct entity receives and reports income after death.
Special situations: joint trusts, business interests and LLCs, rental property, and subtrusts for beneficiaries
Joint revocable trusts
Married couples sometimes create a single joint revocable trust. If one spouse dies, the trust document may split into survivor's and decedent's subtrusts, or it may continue as one trust with portions that become irrevocable. Each funded subtrust that is treated as a separate entity for tax purposes typically obtains its own EIN. The survivor's continuing revocable share may continue to use the survivor's Social Security number, while the irrevocable shares use their own EINs. The specifics depend on the trust's terms.
LLCs and closely held businesses
Where the trust owns an interest in a limited liability company (LLC) or another business, consider:
- Whether the LLC already has its own EIN and operating agreement procedures for ownership changes.
- Who will act for the LLC after the grantor's death (member, manager, or trustee designee).
- Whether the trust's transition to irrevocable status affects tax classification or reporting.
If membership interests are divided among subtrusts, each subtrust normally uses its own EIN. Work closely with the company's accountant to align K-1 reporting with the correct trust entities.
Rental property
Rental properties involve ongoing income, expenses, and 1099 requirements. After death, the trust's EIN is usually provided to property managers and tenants for W-9 purposes so that payments and year-end statements are issued to the correct entity. Insurance coverage, local licensing, and vendor contracts should also be updated to the trustee and, if needed, to the specific subtrust.
Subtrusts for beneficiaries
Many trusts continue assets in trust for beneficiaries rather than distributing outright. Each continuing trust generally needs its own EIN once funded. The trustee should keep separate accounts and records, issue K-1s as appropriate, and avoid commingling assets among subtrusts.
Avoiding common mistakes: timing gaps, missed 1099 updates, and mixing pre- and post-death income
Trust administration moves more smoothly when you anticipate and avoid these common pitfalls:
- Waiting too long to request an EIN: Delays can lead to year-end statements being issued under the wrong number, which complicates tax returns.
- Not notifying financial institutions of the date of death: Without this notice, post-death income may continue to be associated with the decedent's Social Security number.
- Commingling income across subtrusts: Each subtrust typically needs its own account and EIN once funded. Keep separate records for clarity and accuracy.
- Overlooking beneficiary designations: POD/TOD accounts and retirement benefits follow their designations. Make sure the correct trust or subtrust information is provided when needed.
- Missing coordination between the estate and the trust: If both are active, clarify which entity owns which assets and which one will report which items of income and deduction.
- Assuming all institutions follow the same rules: Custodians have different procedures. Ask for their checklist early to prevent back-and-forth delays.
If you are navigating these details after a death or capacity change, we can help you organize the process, obtain the necessary EINs, and coordinate with tax professionals. To speak with our firm about representation, reach out through our contact form or call 414-2538500.
How we can help with trust administration and tax ID transitions
Serving as trustee or personal representative involves legal, tax, and administrative steps that must be handled in the right order. Our firm helps families:
- Determine whether a trust needs its own EIN and when.
- Apply for EINs for the trust, subtrusts, and, when applicable, an estate.
- Coordinate with banks, brokers, property managers, and insurers to update titles and reporting numbers.
- Review and implement the trust's distribution plan, including funding and managing subtrusts.
- Work with tax preparers on year-end reporting and beneficiary tax statements.
- Address special assets, including business interests, LLCs, and rental properties.
If you need counsel to manage the transition, schedule a consultation to discuss hiring our firm for trust administration and EIN setup. Use our contact form or call 414-253-8500 to talk through next steps.
Answers to common questions about revocable trusts and EINs
Do I need an EIN for my revocable living trust while I'm alive?
Often, no. While you are alive and the trust is revocable, many institutions allow the trust to report income under your Social Security number, and that income typically appears on your individual tax return. Some banks or brokers may still request an EIN as a matter of policy. If you are unsure, ask the institution and check with your tax preparer.
When should an EIN be obtained after the grantor's death?
Usually soon after death, when the trust becomes irrevocable and begins receiving post-death income. Promptly obtaining the EIN helps ensure that 1099s and other information returns are issued to the proper entity and that accounts can be retitled without delay.
Who applies for the EIN for a trust and how is it done?
The acting trustee typically applies. The IRS accepts applications online, by fax, or by mail. You will need the trust's legal name, trustee information, and the date the trust became irrevocable (often the date of death). Keep a copy of the confirmation notice with your trust records and provide the number to financial institutions as accounts are updated.
Do subtrusts created after death each need their own EIN?
In many administrations, yes. If the trust directs separate, ongoing subtrusts, each one generally has its own EIN and bank or brokerage account. That allows each subtrust to track income, expenses, and distributions separately and to issue beneficiary tax statements as needed.
What if the trust owns an LLC or rental property—does that change the EIN rules?
It can affect the practical steps. The LLC may continue under its own EIN, but the trust's ownership records and K-1 reporting should be updated. For rentals, property managers and tenants may need a W-9 with the trust's EIN once the trust is irrevocable. Coordination among the trustee, the business or manager, and the tax preparer helps keep reporting accurate.
Key takeaways
- While revocable and during the grantor's lifetime, a living trust often uses the grantor's Social Security number.
- When the trust becomes irrevocable—most commonly at death—an EIN is typically needed for post-death income and account updates.
- Subtrusts funded after death usually obtain separate EINs.
- Prompt communication with financial institutions and early coordination with tax preparers reduces reporting errors and delays.
- Laws, procedures, and forms vary by state and by institution, so tailor the steps to your situation.
If you are preparing for, or currently handling, a trust transition, we are ready to help with administration, EIN applications, and account changes. To discuss representation and schedule a consultation, use our contact form or call 414-253-8500.
Disclaimer: This article provides general information and is not legal, tax, or accounting advice. Laws and procedures vary by state and may change. Consult an attorney and qualified tax professional about your specific circumstances before taking action.
Related articles
Attorney advertising. This page is for general informational purposes only and is not legal advice. Reading this page or contacting the firm does not create an attorney-client relationship.