Yes, most trusts need a tax ID number from the IRS
A trust tax ID, formally called an Employer Identification Number (EIN), is a nine-digit number the IRS assigns to identify a trust for tax purposes. Most trusts that earn income — from investments, rental property, or business activity — must obtain one. A few trusts do not need one, and the rules depend on the type of trust and whether it generates taxable income.
The key distinction is whether the trust is revocable (you can change or cancel it during your lifetime) or irrevocable (you cannot). Revocable living trusts often do not need their own EIN because the trust income is reported on your personal tax return using your Social Security number. Irrevocable trusts almost always need one, because they are treated as separate tax entities once they are funded.
If you create a trust and do nothing else, the IRS will not automatically send you a number. You have to request one, and the process is straightforward but has a specific timing requirement.
Key Takeaways
- Revocable living trusts typically do not need an EIN if all income flows to you during your lifetime, because you report it on your personal return.
- Irrevocable trusts almost always need an EIN because the IRS treats them as separate entities for tax purposes.
- You request an EIN from the IRS using Form SS-4, either online, by phone, or by mail; online is fastest and gives you the number when ready.
- A trust needs an EIN before it can open a bank account, receive income, or file its own tax return.
- If you do not obtain an EIN when required, the trustee may have to use the beneficiary's Social Security number, which creates reporting problems and delays.
When a revocable living trust does not need an EIN
A revocable living trust is one you create and control during your lifetime. You can add assets to it, remove them, change the terms, or dissolve it entirely. For tax purposes, the IRS treats a revocable trust as transparent — meaning the income belongs to you, not the trust.
If you are the trustee of your own revocable trust and all income goes to you, you do not need a separate EIN. You report the trust income on your personal tax return using your own Social Security number, just as you would if the assets were not in a trust. The trust itself files no tax return.
This changes if the trust becomes irrevocable (either because you made it that way or because you died and it became irrevocable under its own terms). At that point, if it holds income-producing assets, it needs an EIN and must file its own return.
When an irrevocable trust must have an EIN
An irrevocable trust is locked in place. Once you transfer assets into it, you cannot take them back or change the terms without the beneficiary's consent. The IRS treats an irrevocable trust as a separate taxpayer, similar to a corporation or partnership.
If an irrevocable trust owns anything that generates income — rental property, stocks, bonds, a business, or even a bank account with interest — it must have an EIN. The trust files its own tax return (Form 1041) and pays tax on income it does not distribute to beneficiaries. Beneficiaries pay tax on income they receive from the trust.
Even a small irrevocable trust with minimal income should obtain an EIN. Without one, the trustee cannot open a bank account in the trust's name, and the IRS cannot process the trust's tax return.
How to request an EIN for a trust
You request a trust EIN using Form SS-4, process for an Employer Identification Number. The IRS offers three ways to submit it: online at irs.gov, by phone, or by mail.
Online is fastest. You fill out the form on the IRS website, and the system assigns an EIN when ready. You can use it right away. By phone, you call the IRS EIN line (the number is on the form), answer questions about the trust, and receive the number verbally. By mail, you send the completed form to the IRS address listed on the form, and you receive the EIN in the mail within four weeks.
On the form, you identify the trust by name, list the trustee's name and Social Security number, and describe the trust's income sources. You do not need to submit a copy of the trust document itself, though you should keep one available if the IRS asks questions later.
Request the EIN before the trust opens a bank account or receives income. If the trust receives income before you have an EIN, the payer may ask for one, and you will have to provide it retroactively — which can create reporting delays.
What happens if a trust does not have an EIN when it should
If a trust earns income but has no EIN, the trustee may be forced to use the beneficiary's Social Security number on tax documents. This creates confusion on the beneficiary's tax return and can trigger IRS notices asking for clarification.
Banks and investment firms will not open an account in the trust's name without an EIN. The trustee may have to open an account in their own name "as trustee," which complicates record-keeping and can create liability issues if the trustee's personal creditors try to reach the account.
If the trust should file a tax return and does not, or files under the wrong number, the IRS may assess penalties on the trustee personally. The trustee is responsible for ensuring the trust complies with tax law.
Trusts created after someone dies
When a person dies, their revocable living trust becomes irrevocable automatically. If the trust holds assets that generate income — rental property, investment accounts, or a business — the executor or successor trustee should obtain an EIN for the trust within a few months of death.
The trust will file its own return (Form 1041) for the year of death and each year after, until the trust is fully distributed to beneficiaries. The EIN is necessary to file that return and to open a bank account for the estate's or trust's expenses.
The process is the same: submit Form SS-4 to the IRS. The trustee provides the decedent's name and Social Security number on the form, along with the date of death.
Special trusts that may not need an EIN
A few types of trusts have different rules. A grantor trust — an irrevocable trust where you retain certain powers or income rights — may not need an EIN if you report all its income on your personal return. A may have access to personal residence trust (QPRT) used for estate planning may not need one if it holds only the residence and no other income-producing assets.
A charitable remainder trust or charitable lead trust always needs an EIN, because these are formal charitable entities that file their own returns. A special needs trust or spendthrift trust needs one if it earns income.
If you are unsure whether your trust needs an EIN, the safest approach is to obtain one. There is no penalty for having an EIN you do not strictly need, but there are penalties for not having one when you do.
Frequently Asked Questions
Can I use my Social Security number instead of getting an EIN for my trust?
Only if the trust is revocable and you are the sole beneficiary during your lifetime. In that case, the income is yours, and you report it on your personal return. For any irrevocable trust or revocable trust that names other beneficiaries, you need an EIN. Banks and the IRS will not accept a Social Security number in place of an EIN for these trusts.
How long does it take to get an EIN for a trust?
Online is when ready — you receive the number the same day. By phone, you get it verbally within minutes. By mail, allow four weeks. If you need the EIN quickly to open a bank account or file a return, use the online or phone method.
Do I need an EIN if my trust has no income yet?
If the trust is irrevocable and may earn income in the future, it is wise to obtain an EIN now. If the trust is revocable and you are the sole beneficiary, you do not need one unless and until it becomes irrevocable. Once an irrevocable trust earns any income, it must have an EIN to file a return.
What if I already have an EIN for my trust but forgot the number?
Call the IRS at the number on Form SS-4, or visit irs.gov and use the EIN lookup tool. Have the trust name and the trustee's Social Security number ready. The IRS can confirm the number in minutes.
Does a trust EIN affect my personal credit or taxes?
No. A trust EIN is separate from your personal Social Security number and does not appear on your credit report. It is used only for the trust's tax filings and bank accounts. Your personal taxes are unaffected by the trust's EIN.