To mail IRS Form 4868 (Application for Automatic Extension of Time to File U.S. Individual Income Tax Return), the mailing address depends on your state of residence and whether you are enclosing a payment:

• If you are not enclosing a payment , mail Form 4868 to the Department of the Treasury Internal Revenue Service Center address based on your state:
  • Alabama, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Texas: Austin, TX 73301-0045
  • Arizona, New Mexico: Austin, TX 73301-0045
  • Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Minnesota, Missouri, New Hampshire, New Jersey, New York, Rhode Island, Vermont, Virginia, West Virginia, Wisconsin: Kansas City, MO 64999-0045
  • Alaska, California, Colorado, Hawaii, Idaho, Kansas, Michigan, Montana, Nebraska, Nevada, North Dakota, South Dakota, Utah, Washington, Wyoming: Ogden, UT 84201-0045
  • Arkansas, Oklahoma: Austin, TX 73301-0045
  • Pennsylvania: Kansas City, MO 64999-0045
  • Foreign country, U.S. possession or territory, APO/FPO addresses, or certain special cases: Austin, TX 73301-0215 USA
• If you are enclosing a payment , mail Form 4868 with payment to the IRS P.O. Box address based on your state:
  • Alabama, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Texas: P.O. Box 1302, Charlotte, NC 28201-1302
  • Arizona, New Mexico: P.O. Box 802503, Cincinnati, OH 45280-2503
  • Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Minnesota, Missouri, New Hampshire, New Jersey, New York, Rhode Island, Vermont, Virginia, West Virginia, Wisconsin: P.O. Box 931300, Louisville, KY 40293-1300
  • Alaska, California, Colorado, Hawaii, Idaho, Kansas, Michigan, Montana, Nebraska, Nevada, North Dakota, South Dakota, Utah, Washington, Wyoming: P.O. Box 802503, Cincinnati, OH 45280-2503
  • Arkansas, Oklahoma: P.O. Box 931300, Louisville, KY 40293-1300
  • Pennsylvania: P.O. Box 802503, Cincinnati, OH 45280-2503
  • Foreign country, U.S. possession or territory, APO/FPO addresses, or certain special cases: P.O. Box 1303, Charlotte, NC 28201-1303 USA

You can also use certain IRS-designated private delivery services to meet timely filing requirements

. This ensures your Form 4868 is sent to the correct IRS location based on your circumstances.