EIN for an Estate in Washington: How to Get One and Why You Need It

One of the first things a Personal Representative needs to do in Washington — before opening an estate bank account, before accepting dividend payments, before any financial transaction on behalf of the estate — is obtain a federal Employer Identification Number (EIN) for the estate.

This is not optional, and it is not difficult. It takes about ten minutes online. Here is exactly how to do it and why it matters.

Why the Decedent's Social Security Number Cannot Be Used

When someone dies, their Social Security number remains active for filing their final personal income tax return (Form 1040) and for reporting income they earned up to the date of death. But the moment you start collecting income on behalf of the estate — dividends, interest, rental income, proceeds from selling estate assets — using the decedent's SSN is wrong and can trigger IRS fraud alerts.

The estate becomes its own distinct legal entity at death. It needs its own taxpayer identification number. Using the decedent's SSN on estate financial accounts is a common mistake that creates reporting problems, delayed tax filings, and potential IRS correspondence that is difficult to untangle.

Additionally, the IRS uses the EIN to cross-reference the estate's Form 1041 (Fiduciary Income Tax Return) against the accounts that generated income. Banks and financial institutions report income to the IRS using the TIN provided on account opening. If multiple accounts are reporting under the decedent's SSN while others use the estate's EIN, the IRS reconciliation process generates notices and potential audit triggers.

How to Get an EIN for a Washington Estate

The IRS provides a free online EIN application through the IRS website (irs.gov). The online application is available Monday through Friday, 7 a.m. to 10 p.m. Eastern time. The EIN is issued immediately upon completion.

Step-by-step:

1. Go to irs.gov/businesses and navigate to the EIN application (search "EIN online application" or find it under the Tools section)
2. Select "Estate of Deceased Individual" as the entity type
3. Enter the decedent's full legal name and Social Security number
4. Provide the Personal Representative's name, mailing address, and SSN (or their own EIN if the PR is an entity)
5. Confirm that the application is for an estate (not a trust, business, or other entity)
6. The IRS issues a nine-digit EIN immediately — save the confirmation page

If you prefer not to use the online system, you can apply by fax (IRS Form SS-4, typically processed within four business days) or by mail (Form SS-4, processed within four to five weeks). Given how promptly you need the EIN to open an estate bank account, the online application is almost always the right choice.

Opening the Estate Bank Account

Once you have the EIN, you can open a dedicated estate bank account. This is where all estate income will flow and from which all estate expenses will be paid. The account name is typically formatted as:

"Estate of [Decedent's Full Legal Name], [Personal Representative's Name], Personal Representative"

You will need to bring:

• The Letters Testamentary from the Superior Court (original or certified copy) — this is the bank's evidence that you have legal authority to act on behalf of the estate
• The estate EIN confirmation from the IRS
• Your personal identification (government-issued photo ID)
• The initial deposit (amount varies by bank, often $25 to $100 minimum)

Some banks have specific procedures for estate accounts and may require additional documentation. Call ahead to your preferred bank's trust department or estate services team before arriving, as not all branches handle estate accounts — a main branch or a branch with business banking services is more likely to be equipped.

What the Estate Bank Account Is Used For

All estate financial activity should run through this account:

• Income in: Dividends, interest, rental income, sale proceeds for estate assets, life insurance proceeds payable to the estate (not to a named beneficiary), and employer's final paycheck if no direct deposit beneficiary exists
• Expenses out: Funeral costs (reimbursable to whoever paid them), probate attorney fees, CPA fees, court filing fees, property taxes and insurance on estate real estate, the Washington estate tax payment, and all distributions to beneficiaries

Maintaining a clean, separate estate account with no personal commingling is critical for two reasons: it protects the Personal Representative from liability allegations, and it makes the CPA's job preparing the Form 1041 dramatically easier. A CPA charging $700 to $1,500 to prepare the estate's fiduciary income tax return is primarily working from the estate bank account records. A disorganized account with personal expenses commingled with estate expenses adds hours of sorting time — at billing rates of $300 to $450 per hour.

Filing Requirements That Flow From the EIN

The EIN triggers two potential filing obligations:

Form 1041 — Fiduciary Income Tax Return: The estate must file a Form 1041 for any tax year in which the estate generates more than $600 in gross income. Washington estates with investment portfolios, rental properties, or ongoing business operations will almost certainly cross this threshold. The 1041 is due by the 15th day of the fourth month following the close of the estate's tax year (typically April 15 for calendar-year estates).

Washington State: Washington does not currently impose its own fiduciary income tax on estates separately from the federal regime (though the new ESSB 6346 millionaire income tax, effective 2028, will apply to non-grantor trusts with income exceeding $1,000,000). For most estate administration periods that conclude before 2028, there is no separate Washington fiduciary income tax return to file beyond the estate tax return.

Common EIN Application Mistakes

Wrong entity type: Selecting "Trust" instead of "Estate" is a frequent error. These are different entities with different tax treatment. An estate has a finite administrative period. A trust can be ongoing for decades. Selecting the wrong entity type at application can cause filing mismatches down the road.

Using the EIN before Letters Testamentary are issued: You can technically apply for and receive the EIN at any time after death, but banks will not open the estate account until you present Letters Testamentary. Sequence: apply for EIN first (it is fast), then file the probate petition and wait for the court to issue Letters Testamentary, then go to the bank with both.

Applying before the estate is clearly identified: The EIN application asks for the decedent's legal name exactly as it appears on their Social Security record. Discrepancies between the name on the EIN application and the name on the death certificate can create issues. Use the full legal name as it appears on the death certificate.

The Washington Final Tax & Estate Tax Guide at /us/washington/estate-tax/ includes step-by-step instructions for the EIN application, a checklist for opening the estate bank account, and the complete Form 1041 overview for estates generating income during administration.

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