Employer Identification Number
When filing a 1041, an Employer Identification Number (EIN) is required. An EIN may be applied for in one of two ways:
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By faxing or mailing Form SS-4 to the IRS (See SS-4 instructions).
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Apply for one online by going to IRS.gov/EIN.
In some situations, more than one EIN may have been obtained for a trust or estate. If that is the case, and there’s uncertainty which one to use, call 800-829-4933 and the IRS will advise as to which one to use. For more information related to EINs, see Pub. 1635.
Do not obtain an EIN for a Grantor Trust. It uses the SSN of the trustor.