You can generally claim (file) your 2025 tax return starting in early 2026, once the official tax season opens for the 2025 tax year in your country.

Below assumes you are asking about income tax for the 2025 tax year (money you earn during 2025), and covers the two most common systems people search for online: the United States and the United Kingdom.

United States – 2025 Return

For U.S. federal income taxes, a “2025 tax return” usually means the return you file in 2026 for income earned from January 1 to December 31, 2025.

  • Earliest you can file:
    • The IRS opens e‑filing in late January 2026.
    • For the current cycle used as a guide, the IRS announced an opening date of Monday, January 27, 2025 for that year’s season, and it is typically a similar “last week of January” window each year.
  • Deadline to file (on time):
    • Standard “Tax Day” is typically April 15 of the following year.
    • For a 2025 return, that means April 15, 2026 for most calendar‑year individual filers.
  • If you need more time:
    • You can request an automatic extension (commonly to October 15, 2026 for a 2025 return), but this only extends the time to file, not the time to pay any tax you owe.
  • When you might get your refund:
    • The sooner in tax season you file accurately and choose direct deposit, the sooner a refund is typically issued, often within a few weeks after the IRS accepts your return, though this can vary by year and by situation.

United Kingdom – 2024/25 Self Assessment

In the UK, the self‑assessment system works by tax year , not calendar year, so what people informally call a “2025 tax return” usually refers to the 2024/25 tax year (income from 6 April 2024 to 5 April 2025), which you submit during 2025–26.

  • When you can first submit:
    • You can submit your return any time on or after 6 April 2025 for the 2024/25 tax year.
  • Deadlines:
    • Paper returns: HMRC must receive them by 31 October 2025 , 23:59.
* **Online returns:** Must be submitted by **31 January 2026** , 23:59.
  • Special note (paying through your tax code):
    • If you want HMRC to collect what you owe through your PAYE tax code, you usually must submit the online return by 30 December 2025.

Australia – 2024–25 Financial Year

In Australia, the 2024–25 financial year runs from 1 July 2024 to 30 June 2025 , and you lodge that return in the second half of 2025.

  • When you can start lodging:
    • You can lodge your return for the 2024–25 financial year from 1 July 2025 , when tax season opens.
  • Key dates:
    • 1 July 2025: Tax season opens; you can start lodging.
* **31 October 2025:** Due date for most **self‑lodged** individual tax returns.

* Lodging through a registered tax agent may give you an extended deadline if you are on their lodgment program.
  • Tip on timing:
    • Many tax professionals recommend waiting until mid to late July so pre‑filled data from employers and banks reaches the tax office, which can reduce errors and processing delays.

Quick HTML Table of Key Filing Windows

html

<table>
  <thead>
    <tr>
      <th>Region</th>
      <th>What “2025 return” means</th>
      <th>Earliest you can file</th>
      <th>Main on‑time deadline</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>United States</td>
      <td>Income earned 1 Jan–31 Dec 2025, filed in 2026 [web:3][web:5]</td>
      <td>Late Jan 2026 when IRS opens e‑file (typically last week of Jan) [web:5]</td>
      <td>Around 15 April 2026 for most individual filers [web:3][web:5]</td>
    </tr>
    <tr>
      <td>United Kingdom</td>
      <td>2024/25 tax year (6 Apr 2024–5 Apr 2025) [web:9]</td>
      <td>From 6 April 2025 [web:9]</td>
      <td>31 Oct 2025 (paper) or 31 Jan 2026 (online) [web:9]</td>
    </tr>
    <tr>
      <td>Australia</td>
      <td>2024–25 financial year (1 Jul 2024–30 Jun 2025) [web:1]</td>
      <td>From 1 July 2025 [web:1]</td>
      <td>31 October 2025 for most self‑lodged returns [web:1]</td>
    </tr>
  </tbody>
</table>

How to Use This for “When Can I Claim My Tax Return 2025”

  • If you are in the U.S. , you can “claim” (file and potentially get a refund for) your 2025 return starting in late January 2026 , and you normally must file by mid‑April 2026 to be on time.
  • If you are in the UK , you can start submitting in April 2025 for the 2024/25 year, with key deadlines in October 2025 (paper) and January 2026 (online).
  • If you are in Australia , you can lodge from 1 July 2025 for the 2024–25 year, with most individuals due by 31 October 2025.

If you reply with your country (and whether you’re employed, self‑employed, or both), a more tailored timeline for “when you can claim your tax return 2025” can be laid out step‑by‑step for your exact situation.