C. Employer Identification Number
Every estate or trust that is required to file Form 1041 must have an EIN. An EIN may be applied for:
Online by clicking on the EIN link at www.irs.gov/businesses/small . The EIN is issued immediately once the application information is validated.
By telephone at 1-800-829-4933 from 7:00 a.m. to 7:00 p.m. in the fiduciary's local time zone. Assistance provided to callers from Alaska and Hawaii will be based on the hours of operation in the Pacific time zone.
By mailing or faxing Form SS-4, Application for Employer Identification Number.
If the estate or trust has not received its EIN by the time the return is due, write “Applied for” and the date you applied in the space for the EIN. For more details, see Pub. 583, Starting a Business and Keeping Records.