You have these options to submit Power of Attorney (POA) and Tax Information Authorization (TIA). Find more about Power of Attorney and other authorizations. Use Tax Pro Account Submit authorization request to taxpayer's online account. All-digital submission Electronic signature Real-time processing Use for: Individual taxpayer with online account Limited tax matters and periods Prior authorizations revoked for same tax matters or periods Use Tax Pro Account Submit forms online Submit Forms 2848 and 8821 online to the IRS. Secure form upload Electronic or handwritten signature First-in, first-out processing Use for: Individual or business taxpayer Any tax matter or period Prior authorizations retained or revoked Submit forms online Fax or mail Forms 2848 and 8821 If you can’t use an online option, you can fax or mail authorization forms to us. Paper forms by fax or mail Handwritten signature only First-in, first-out processing Use for: Individual or business taxpayer Any tax matter or period Prior authorizations retained or revoked Forms and instructions Get forms and instructions to submit by fax or mail: Form 2848, Power of Attorney and Declaration of Representative Form 8821, Tax Information Authorization