Mailing Addresses for 2025 Form 4868 Extending 1040 and 1040SR April 15, 2026, Due Date

Three options for requesting an automatic extension of the due date of Wednesday, April 15, 2026, for filing 2025 federal individual income tax return forms 1040 and 1040SR are available, as explained on 2025 Form 4868 Application for Automatic Extension of Time To File U.S. Individual Income Tax Return (URL: https://www.irs.gov/pub/irs-pdf/f4868.pdf). The request must be made on or before Wednesday, April 15, 2026.

One of the three options for Form 4868 allows filing in paper format. The inclusion of full or partial payment of the estimated tax due with Form 4868 is optional.

Another option entails filing Form 4868 electronically. Electronic filing involves accessing IRS e-file through the taxpayer's tax software or through a tax professional who uses e-file.

A third option eliminates filing Form 4868. Electronic payment of all or part of the estimated tax amount generates an automatic extension. "The IRS will automatically process an extension of time to file when you pay part or all of your estimated income tax electronically. You can pay online or by phone," as stated in "Pay Electronically" on Form 4868 (page 1). "The IRS recommends paying electronically whenever possible. You can make a secure payment: • Online using IRS Direct Pay, or your IRS online account; or • Online or by phone using the Electronic Federal Tax Payment System (EFTPS), a debit card, a credit card, or a digital wallet such as Click to Pay, PayPal, or Venmo." ("How to Make a Payment: Electronic Payments," Form 4868, page 3).

Seven IRS addresses process taxpayer paper requests for extending the April 15, 2026, due date on forms 1040 and 1040SR. Three addresses accepting payment-enclosed forms 4868 are located in Louisville, Kentucky, and Charlotte, North Carolina. Four addresses processing payment-less forms 4868 are sited in Kansas City, Missouri; Austin, Texas; and Ogden, Utah.

"Form 4868 Application for Automatic Extension of Time To File U.S. Individual Income Tax Return 2025," Form 4868 page 1: via U.S. Department of the Treasury Internal Revenue Service (IRS) @ https://www.irs.gov/pub/irs-pdf/f4868.pdf

IRS, via Facebook March 16, 2026, @ https://www.facebook.com/IRS/posts/pfbid0kL1i7jk87uba5C8mD7H9YjUT5vN8SThPTsXugCAvVfCdgs2BUPRWM3BxWs7YrRnel; IRS, via Facebook March 16, 2026, @ https://www.facebook.com/photo.php?fbid=1341989301308122&set=pb.100064911930482.-2207520000

"Where To File a Paper Form 4868," Form 4868 page 4: via U.S. Department of the Treasury Internal Revenue Service (IRS) @ https://www.irs.gov/pub/irs-pdf/f4868.pdf

U.S. Department of the Treasury Internal Revenue Service. "Form 1040 U.S. Individual Income Tax Return." Internal Revenue Service > Forms and Publications.

• Available via IRS @ https://www.irs.gov/pub/irs-pdf/f1040.pdf

U.S. Department of the Treasury Internal Revenue Service. "Form 1040-NR U.S. Nonresident Alien Income Tax Return." Internal Revenue Service > Forms and Publications.

• Available via IRS @ https://www.irs.gov/pub/irs-pdf/f1040nr.pdf

U.S. Department of the Treasury Internal Revenue Service. "Form 1040-PR Declaración de Impuestos Federal sobre el Trabajo por Cuenta Propria (Incluyendo el Crédito Tributario Adicional por Hijos para Residentes Bona Fide de Puerto Rico." Internal Revenue Service > Forms and Publications.

• Available via IRS @ https://www.irs.gov/pub/irs-pdf/f1040pr.pdf

U.S. Department of the Treasury Internal Revenue Service. "Form 1040-SR U.S. Tax Return for Seniors." Internal Revenue Service > Forms and Publications.

• Available via IRS @ https://www.irs.gov/pub/irs-pdf/f1040s.pdf

U.S. Department of the Treasury Internal Revenue Service. "Form 2555 Foreign Earned Income." Internal Revenue Service > Forms and Publications.

• Available via IRS @ https://www.irs.gov/pub/irs-pdf/f2555.pdf

U.S. Department of the Treasury Internal Revenue Service. "Form 4563 Exclusion of Income for Bona Fide Residents of American Samoa." Internal Revenue Service > Forms and Publications.

• Available via IRS @ https://www.irs.gov/pub/irs-pdf/f4563.pdf

U.S. Department of the Treasury Internal Revenue Service. "Form 4868 Application for Automatic Extension of Time To File U.S. Individual Income Tax Return." Internal Revenue Service > Forms and Publications.

• Available via IRS @ https://www.irs.gov/pub/irs-pdf/f4868.pdf

U.S. Department of the Treasury Internal Revenue Service. Tax Guide 2025 for Individuals: Your Federal Income Tax for Individuals for Use in Preparing 2022 Returns. Publication 17. Catalog Number 10311G. Washington DC: U.S. Government Printing Office (GPO), January 13, 2026.

• Available via IRS @ https://www.irs.gov/pub/irs-pdf/p17.pdf

U.S. Department of the Treasury Internal Revenue Service. Tax Guide for Individuals With Income From U.S. Possessions for Use in Preparing 2023 Returns. Publication 570. Catalog Number 15118B. Washington DC: U.S. Government Printing Office (GPO), February 26, 2026.

• Available via IRS @ https://www.irs.gov/pub/irs-pdf/p570.pdf

U.S. Department of the Treasury Internal Revenue Service. Tax Year 2025 1040 (and 1040-SR) Instructions. Washington DC: U.S. Government Publishing Office (GPO), January 2, 2026.

• Available via IRS @ https://www.irs.gov/pub/irs-pdf/i1040.pdf