If you’ve lost the letter of assignment that the IRS sent you when they allocated your EIN, only you can obtain a copy.
You must call the IRS at +1-800-829-4933 between the hours of 7:00 a.m. and 10:00 p.m. EST. Give the tax assistant your business name and verifying information such as your business address and phone number.
Request a tax ID verification letter (form 147c). The IRS can fax or mail the letter to you if your contact information is the same as when you applied for the number.
If you changed your business mailing address or fax number, you must file Form 8822 to change your address with the IRS before you can receive a verification letter.
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Related questions
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How do I get a copy of my EIN letter of assignment
If you’ve lost the letter of assignment that the IRS sent you when they allocated your EIN, only you can obtain a copy. You must call the IRS at +1-800-829-4933 between the hours of 7:00 a.m. and 10:00 p.m. EST. Give the tax assistant your business name and verifying information such as your business address…