How to Get an EIN for an Estate: IRS Form SS-4 Step by Step

Most executors expect to spend months dealing with probate court, creditors, and tax filings. What they do not expect is to be blocked on day one by the inability to open a bank account. That is exactly what happens when they try to operate without an Employer Identification Number for the estate — and most do not realize they need one until a bank teller turns them away.

An EIN (Employer Identification Number) is the IRS's tax identification number for entities that are not individuals. When a person dies, their estate becomes a legal entity that needs its own EIN. The decedent's Social Security Number cannot be used for estate transactions — legally or practically.

Why Every Estate Needs an EIN

The EIN is required for three core functions in Oregon estate administration:

1. Opening an estate bank account. Oregon law requires personal representatives to keep estate funds separate from their personal funds. Commingling is a breach of fiduciary duty. Every legitimate bank will ask for the estate's EIN before opening an account. Without it, there is no legal place to receive incoming estate funds, pay creditors, or stage distributions.

2. Filing Form OR-41 (Oregon Fiduciary Income Tax Return). If the estate earns income during administration — interest, dividends, rental income, capital gains from property sales — that income must be reported on the estate's own tax return. The estate's EIN goes on every OR-41 filing. Oregon requires this return for any estate earning $600 or more in gross income.

3. Filing Form OR-706 (Oregon Estate Tax Return). Oregon has a $1 million estate tax threshold — one of the lowest in the country. For estates over that amount, Form OR-706 is due 12 months after the date of death. The EIN is required on that filing. Oregon's OR-706 deadline is separate from the federal Form 706 deadline (9 months) — executors must track them independently.

How to Apply: IRS Online Application

The fastest method is the IRS online EIN assistant, available at IRS.gov. The application takes approximately 10 minutes and delivers the EIN immediately at the end — no waiting period, no mail.

The online tool is only available Monday through Friday, 7:00 a.m. to 10:00 p.m. Eastern time. Plan accordingly if you need the EIN urgently.

Step-by-step:

1. Navigate to the IRS EIN online application. Search for "apply for EIN online" at IRS.gov — the link is in the Tools section.

2. Select "Estate" as the entity type. Do not select Trust, Corporation, or another category — choose Estate specifically. This determines how the IRS classifies the taxpayer identification number.

3. Enter the decedent's information:

• Full legal name (exactly as it appears on the Social Security card)
• Social Security Number
• Date of death
• County and state where the estate is being administered

4. Enter the responsible party's information. The responsible party is the personal representative or executor — the person managing the estate. Provide your full name, your own SSN or ITIN, and your mailing address. This address becomes the estate's address of record with the IRS.

5. Select the reason for applying. Choose "Banking purposes" and/or "Estate administration" when prompted.

6. Review and submit. The system generates a nine-digit EIN immediately. Print the confirmation page or save it as a PDF. This is your official assignment — the paper confirmation letter the IRS mails separately can take several weeks to arrive, but the EIN is valid and usable the moment it appears on screen.

How to Apply: IRS Form SS-4

If you prefer a paper application or the online system is unavailable, use IRS Form SS-4 (Application for Employer Identification Number).

Key fields for an estate application:

• Line 1: Legal name of estate — typically written as "Estate of [Decedent's Full Name]"
• Line 3: Responsible party's name and SSN (the executor)
• Line 7a/7b: Responsible party's SSN
• Line 9a: Select "Estate"
• Line 11: Date the EIN is needed (usually immediately)
• Line 16: Select "Estate" as the reason for applying

Submission options:

• Fax: Fax the completed Form SS-4 to the applicable IRS fax number listed in the form instructions. Fax processing typically takes four business days, and the IRS faxes back the EIN assignment.
• Mail: Mailing is the slowest option — four to five weeks for processing. Avoid this if you need the EIN for near-term banking or a filing deadline.
• Phone: Call the IRS Business & Specialty Tax Line. A representative will ask you the SS-4 questions over the phone and assign an EIN immediately.

Oregon-Specific Notes

Oregon does not issue a separate state EIN. The federal EIN assigned by the IRS is used on all Oregon state filings — OR-40, OR-41, and OR-706. When the Oregon Department of Revenue cross-references filings, it uses the federal EIN. Make sure the EIN appears exactly the same on every return.

Section 645 election: If the decedent had a revocable living trust, the personal representative and trustee may elect under IRC Section 645 to treat the trust as part of the estate for income tax purposes. This election, filed on IRS Form 8855, uses the estate's EIN and must be made by the due date of the combined entity's first Form 1041. This election can allow the combined entity to use a fiscal year and may simplify Oregon's OR-41 filing significantly.

The kicker credit connection: Oregon's refundable kicker credit for overpaid prior-year income tax can apply to the decedent's final OR-40 personal return (filed under the decedent's SSN) but not to the estate's OR-41 (filed under the EIN). Executors sometimes confuse these two returns — keep the SSN and EIN uses strictly separated.

What to Do After You Have the EIN

Take the IRS confirmation letter (or the printed confirmation from the online session) to a bank along with:

• Letters Testamentary or Letters of Administration from the Oregon circuit court (the court-issued document confirming your authority to act as personal representative)
• A certified copy of the death certificate (Short Form if the estate includes real property that will be recorded — Oregon prohibits cause-of-death information in real estate recordings)
• Your government-issued photo ID

Most Oregon banks can open the estate account the same day if you bring all three documents.

Once the account is open, all estate transactions should flow through it: incoming asset transfers, creditor payments, tax payments, and eventual distributions to beneficiaries. Accurate records from this account form the basis of all three Oregon tax returns.

How Long to Keep the EIN Active

Keep the estate EIN in use until administration is fully complete — the final OR-41 has been filed as a terminal return, all distributions have been made, and the estate is officially closed. At that point, notify the IRS in writing that the EIN is no longer active to prevent phantom filings or notices in future years.

The EIN is the first administrative step that unlocks everything else in Oregon estate administration. Without it, you cannot open the estate account, and without the account, you cannot properly receive assets, pay creditors, or file tax returns on schedule. The Oregon Final Tax & Estate Tax Guide covers the full executor workflow — from EIN application through final OR-706 filing and estate closure.

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