You can start filing your 2025 federal tax return (the one you file in early 2026) when the IRS opens the 2026 tax season, which is January 26, 2026, and the filing deadline is April 15, 2026 for most people.

Quick Scoop

  • IRS opening date (start of filing):
    • The IRS will begin accepting and processing 2025 individual federal income tax returns on January 26, 2026.
* If you use tax software or a tax preparer, you can usually **prepare and queue** your return earlier in January, but it will not actually be filed with the IRS until that opening date.
  • Main 2026 deadlines for your 2025 return:
    • Regular filing deadline for most individual filers: April 15, 2026.
* If you request an extension, you typically have until **October 15, 2026** to file, but any tax you owe is still due by April 15.
  • When key tax documents arrive:
    • Employers must send most W‑2s by January 31, 2026 , so many people can’t file accurately until those arrive.
* Other forms like 1099s often arrive through late January and into early February, so waiting until you have everything helps avoid amended returns.

Why early filing can help

  • Filing soon after the IRS opens can mean:
    • Faster potential refunds, since early-season returns are often processed more quickly.
* Lower risk of someone trying to **file a fraudulent return** in your name first, a common identity-theft issue.

* Less last‑minute stress compared with rushing near the deadline, especially if you have multiple income sources or itemized deductions.

What “start filing in 2026” really means

  • “Tax year” vs “tax season”:
    • You are filing 2025 income during the 2026 tax season ; that’s why the dates sound off by one year.
* The IRS controls the **start date** (Jan 26, 2026), but tax software and preparers may let you start inputting data earlier so it can be transmitted as soon as the IRS opens.
  • If you are self‑employed or make estimated payments:
    • You may also have quarterly estimated tax due dates (like April 15, June 15, Sept 15, and Jan 15 of the next year), which are separate from your annual filing deadline.

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