Note: Some addresses may not match a particular instruction booklet or publication. This is due to changes being made after the publication was printed. This site will reflect the most current where to file addresses for use during calendar year 2025. Addresses for forms beginning with the number 4 Form name (For a copy of a form, instruction, or publication) Address to mail form to IRS Where to file Form 4466 Addresses for filing Form 4466 Where to file addresses for filing Form 4506 Addresses for filing Form 4506 Where to file addresses for filing Form 4506T-EZ Addresses for filing Form 4506T-EZ Where to file addresses for filing Form 4506-T Addresses for filing Form 4506-T Form 4720, Return of Certain Excise Taxes on Charities and Other Persons Under Chapters 41 and 42 of the Internal Revenue Code Address to send Form 4720 Form 4868, Application for Automatic Extension of Time To File U.S. Individual Income Tax Return Taxpayer or tax professional filing Form 4868
