You can file Form 4868 either electronically or by mailing a paper form , and the correct place depends on how you file and where you live.

Quick Scoop: Where to file Form 4868

1. E‑file (fastest and preferred)

You generally do not send anything by mail if you e‑file Form 4868. You can:

  • Use tax software (TurboTax, H&R Block, TaxAct, etc.).
  • Use an IRS‑authorized e‑file provider such as TaxZerone or similar services.
  • File an “extension by payment” by paying your estimated tax due online (Direct Pay, EFTPS, or card) and designating the payment as an extension; this counts as filing Form 4868.

If you e‑file, the “where to file Form 4868” is effectively the e‑file service or payment portal , not a physical address.

2. Paper filing by mail

If you mail Form 4868, the address is based on:

  • The state or territory where you live, and
  • Whether you are sending a payment with the form or no payment.

The IRS instructions for Form 4868 include a “Where To File a Paper Form 4868” table listing the exact addresses. A simplified snapshot (not all states shown) looks like this:

[5][1] [1][5] [5][1] [1][5] [5][1] [3][1][5] [1][5] [3][5][1] [3][5][1] [5][1][3]
Where you live If you’re sending a payment, mail Form 4868 to If you’re NOT sending a payment, mail Form 4868 to
AL, FL, GA, LA, MS, NC, SC, TN, TX P.O. Box 1302, Charlotte, NC 28201-1302Austin, TX 73301-0045
AZ, AR, NM, OK P.O. Box 931300, Louisville, KY 40293-1300Austin, TX 73301-0045
CT, DE, DC, IL, IN, IA, KY, ME, MD, MA, MN, MO, NH, NJ, NY, PA, RI, VT, VA, WV, WI P.O. Box 931300, Louisville, KY 40293-1300Kansas City, MO 64999-0045
AK, CA, CO, HI, ID, KS, MI, MT, NE, NV, ND, OH, OR, SD, UT, WA, WY P.O. Box 931300, Louisville, KY 40293-1300Ogden, UT 84201-0045
Foreign country, American Samoa, Puerto Rico, APO/FPO, certain 1040‑NR situations P.O. Box 1303, Charlotte, NC 28201-1303 USAAustin, TX 73301-0215 USA or Kansas City, MO 64999-0045 USA (depends on filer type)
For the **full and current list** , always check the latest Form 4868 PDF and its instructions on the IRS website.

3. Quick “what should I do?” guide

  1. Decide if you want to e‑file or mail.
  2. If e‑filing:
    • Use tax software or an IRS‑authorized e‑file provider, or
    • Make an online payment designating it as an extension (no paper form needed).
  1. If mailing:
    • Confirm whether you’re including a check/money order.
    • Look up the “Where To File a Paper Form 4868” section in the current IRS Form 4868 instructions and use the address that matches your state and payment status.

Information gathered from public forums or data available on the internet and portrayed here.