A revocable trust does not need its own EIN while you’re alive and mentally competent. During that period, the trust uses your Social Security number, and all trust income flows onto your personal Form 1040. A separate Employer Identification Number becomes necessary only when a triggering event — usually your death — turns the trust into a separate taxpayer.
Why Your SSN Works While You’re Alive
Federal tax law treats a revocable trust as a “grantor trust.” The IRS views you and the trust as the same taxpayer for income tax purposes. Section 671 of the Internal Revenue Code requires that income, deductions, and credits belonging to a grantor trust appear on the grantor’s own return rather than on a separate trust return.1Office of the Law Revision Counsel. 26 USC 671 – Trust Income, Deductions, and Credits Attributable to Grantors and Others as Substantial Owners Section 676 treats you as the owner of any portion of the trust you can take back.2Office of the Law Revision Counsel. 26 USC 676 – Power to Revoke Because you keep the power to revoke, you keep the tax identity.
The practical result: when the trustee opens a bank or brokerage account in the trust’s name, the institution asks for your Social Security number. Any 1099s issued for trust interest, dividends, or capital gains carry your SSN and land on your 1040. No Form 1041 is filed. Nothing about the trust’s tax reporting looks any different from how the same assets would be reported if you owned them outright.
An Optional EIN for Privacy
You can get an EIN for a living revocable trust if you’d rather not hand your Social Security number to every institution holding trust assets. Treasury regulations allow the trustee to obtain an EIN, furnish that number to financial institutions, and file an annual statement with the IRS reporting the trust’s income and tying it back to the grantor.3eCFR. 26 CFR 1.671-4 – Method of Reporting Choosing this path doesn’t change the trust’s tax status. Income still ends up on your personal return; you’ve just swapped which number the banks see.
When a Revocable Trust Must Get an EIN
Your Death
The most common trigger is the grantor’s death. A revocable trust automatically becomes irrevocable at that point, because the person who held the power to revoke it is gone. The trust can no longer use the deceased grantor’s SSN and must obtain its own EIN. From then on, the trustee files Form 1041 each year to report trust income, deductions, and distributions to beneficiaries.4Internal Revenue Service. About Form 1041, US Income Tax Return for Estates and Trusts
Your Incapacity
Incapacity is less clear-cut. A revocable trust generally keeps its grantor-trust status as long as the power to revoke still exists, even if you can’t personally exercise it. If state law or the trust document lets an agent under a power of attorney or a court-appointed guardian exercise that revocation power, the trust may continue using your SSN. If no one is legally authorized to revoke the trust on your behalf, grantor-trust status can end, and the successor trustee would need to obtain an EIN. Even where grantor-trust status technically survives, some banks and brokerages ask for an EIN once a successor trustee takes over, so it’s worth calling each institution before assuming nothing changes.
Converting to a Non-Grantor Trust
A trustee may deliberately convert a grantor trust into a non-grantor trust for tax planning reasons, such as having the grantor formally release the power to revoke. That creates a separate taxable entity and requires an EIN. Once assigned, the EIN stays with the trust for the rest of its existence.
Joint Trusts by Unmarried People
When two people who are not married create a single joint trust, the IRS can’t attribute all the income to one Social Security number. Trusts like these typically need their own EIN from the day they’re funded, because the standard grantor-trust reporting methods assume a single grantor or a married couple filing jointly.
Applying for the Trust’s EIN
The application is Form SS-4, and the IRS charges nothing for it. The agency specifically warns against third-party sites that charge a fee.5Internal Revenue Service. Get an Employer Identification Number
Before you start, gather:
- The legal name of the trust, exactly as it appears in the trust document.6Internal Revenue Service. Instructions for Form SS-4
- The responsible party — for a trust, the grantor, owner, or trustee who controls the trust’s funds and assets — and that person’s Social Security number or existing taxpayer ID.6Internal Revenue Service. Instructions for Form SS-4
- The date the trust’s tax status changed, such as the date of the grantor’s death or the date the trust became irrevocable.
- A mailing address for IRS correspondence.
- The entity type (Trust) and the reason for applying.
If the trust has more than one trustee, list only one as the responsible party. Keep a copy of the trust agreement handy — particularly the signature page and the section identifying current trustees — to verify what you enter.
There are three ways to submit Form SS-4:
- Online. The fastest option. The IRS issues the EIN immediately after approval. The online tool runs Monday through Friday from 6:00 a.m. to 1:00 a.m. the next day, Saturday from 6:00 a.m. to 9:00 p.m., and Sunday from 6:00 p.m. to midnight, Eastern Time.5Internal Revenue Service. Get an Employer Identification Number
- Fax to 855-641-6935. Standard turnaround is about four business days, though processing times fluctuate.7Internal Revenue Service. Employer Identification Number
- Mail to Internal Revenue Service, Attn: EIN Operation, Cincinnati, OH 45999. Expect about four weeks.7Internal Revenue Service. Employer Identification Number
You can obtain only one EIN per responsible party per day, whichever method you use.
What Happens After You Have the EIN
Update Every Financial Institution
Notify each bank, brokerage, and investment firm that holds trust assets so their records show the trust’s EIN rather than the deceased grantor’s SSN. Without that update, income can be reported under the wrong taxpayer identification number, which triggers IRS matching notices. Institutions generally ask for a certified copy of the death certificate, the trust agreement or a certificate of trust, a government-issued photo ID for the successor trustee, and the IRS letter confirming the new EIN. Requirements vary, so ask each one early.
File Form 1041 Each Year
Once the trust has its EIN, the trustee files Form 1041 annually to report income, deductions, gains, losses, and distributions.4Internal Revenue Service. About Form 1041, US Income Tax Return for Estates and Trusts Beneficiaries receive a Schedule K-1 showing their share of trust income, which they report on their own Form 1040.
Form 1041 is due by the 15th day of the fourth month after the close of the trust’s tax year — April 15 for a calendar-year trust.8Internal Revenue Service. Forms 1041 and 1041-A: When to File Filing Form 7004 gives an automatic five-and-a-half-month extension.9Internal Revenue Service. Instructions for Form 1041
Missing the deadline costs 5 percent of the unpaid tax per month (or partial month), capped at 25 percent. If the return is more than 60 days late, the minimum penalty is the smaller of $525 or the total tax due. Fraudulent failure to file raises the monthly rate to 15 percent, capped at 75 percent. The IRS can waive the penalty for reasonable cause.9Internal Revenue Service. Instructions for Form 1041
Consider the Section 645 Election if There’s Also an Estate
When the grantor dies and the estate goes through probate, the successor trustee and the executor can make a joint election under Section 645 of the Internal Revenue Code. That election lets the now-irrevocable trust be treated as part of the decedent’s estate for tax purposes during a transition period. The trust still needs its own EIN, but with an executor in place, a single combined Form 1041 is filed under the estate’s EIN rather than two separate returns.10eCFR. 26 CFR 1.645-1 – Election by Certain Revocable Trusts to Be Treated as Part of Estate The combined entity can adopt a fiscal year rather than being locked into a calendar year, and it picks up the two-year exemption from estimated tax payments that estates receive. The election must be made by the filing deadline, including extensions, for the first Form 1041.