If you file a valid federal tax extension, your new filing deadline is generally October 15, but your payment deadline stays the regular April due date (usually April 15).

New filing deadline

  • For recent years, filing an extension by the normal due date (around April 15) gives you until about October 15 of that same year to submit your federal return.
  • For example, for your 2025 return due in 2026, an approved extension moves the filing deadline to October 15, 2026.

What does NOT change

  • An extension does not give more time to pay; any tax you owe is still due by the regular April deadline to avoid late-payment penalties and interest.
  • You are expected to estimate your tax liability and pay by April 15 even if you plan to file the full return months later.

If you can’t pay in full

  • Paying as much as possible by April 15 reduces penalties and interest on the unpaid balance.
  • You can look into IRS payment plans or work with a tax professional if you know you will still have a balance after April.

Simple HTML table of key dates

html

<table>
  <tr>
    <th>Situation</th>
    <th>Typical deadline</th>
  </tr>
  <tr>
    <td>File return without extension</td>
    <td>Around April 15</td>
  </tr>
  <tr>
    <td>Pay any tax owed (even with extension)</td>
    <td>Around April 15</td>
  </tr>
  <tr>
    <td>File return with approved extension</td>
    <td>Around October 15</td>
  </tr>
</table>

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