You can start filing your federal tax return as soon as the IRS opens its filing season, which for the 2025 tax year began on January 27, 2026. However, the practical answer depends on when you have all your tax documents in hand, which for most people means late January at the earliest.
When the IRS Starts Accepting Returns
The IRS officially opened the 2026 filing season on January 27, 2026, for tax year 2025 returns. Before that date, the IRS systems simply won’t process a return, no matter how eager you are. This opening date shifts slightly each year but typically falls in the last week of January.
Most tax software lets you start entering your information before the IRS opens. You can fill out your return in December or early January if you want, but the software holds it and transmits it once the IRS begins accepting e-filed returns. If you’re filing on paper, you can mail your return before the opening date, but it will sit in a queue until processing begins.
When Your Tax Documents Arrive
Even though the IRS opens in late January, you probably won’t have everything you need by then. Employers and financial institutions have legal deadlines to send you the forms you’ll need, and those deadlines stretch into February.
- W-2s, most 1099s, and 1098s: Due to you by February 2, 2026.
- 1099-B (investment sales) and 1099-S (real estate proceeds): Due by February 17, 2026.
- 1099-MISC (certain payments): Also due by February 17, 2026, if reporting only specific box entries.
Those are deadlines, not guarantees of early delivery. Some employers and brokerages send forms in mid-January, while others wait until the last day. If your tax situation is simple, say a single W-2 and no investments, you may have everything by the last week of January. If you have brokerage accounts, rental income, or freelance clients sending 1099s, expect to wait until mid-to-late February before you’re confident everything has arrived.
The Corrected Form Problem
One reason to be cautious about filing the moment your documents arrive: corrected forms. Brokerage firms in particular are known for issuing amended 1099s after the original mailing. Merrill Edge, for example, notes that corrected forms may be mailed anytime between late February and April 15. Other major brokerages follow a similar pattern.
If you file your return and then receive a corrected 1099 showing different investment income, you’ll need to file an amended return. That’s not the end of the world, but it adds hassle and delays. If you have investment accounts, waiting until early-to-mid March gives the brokerage time to catch any corrections before you file.
Filing Early with EITC or Child Tax Credit
If you claim the Earned Income Tax Credit (EITC) or the Additional Child Tax Credit (ACTC), you can file as soon as the season opens, but your refund will be delayed regardless. Federal law requires the IRS to hold refunds for returns claiming these credits until mid-February. The IRS uses this extra time to verify the claims and reduce fraud. In practice, most people in this group see their refunds arrive in late February or early March, even if they filed on January 27.
Filing early still puts you at the front of the line once those holds are lifted, so there’s no downside to submitting your return as soon as your documents are ready.
How Early Filing Affects Your Refund
For filers who aren’t subject to the EITC/ACTC hold, the IRS generally issues refunds within 21 days of accepting an e-filed return. If you file on the first day the IRS opens and everything checks out, you could see your refund by mid-to-late February.
Paper returns take significantly longer, often six to eight weeks or more. If speed matters to you, e-filing with direct deposit is the fastest combination. Choosing to receive a paper check adds additional time on top of the processing window.
A Realistic Timeline for Most People
Here’s what the filing window looks like in practice for different situations:
- Simple return (one W-2, no investments): You may be ready to file by late January or the first few days of February, as soon as your W-2 arrives.
- Freelance or contract income: Wait until after February 2 to make sure all 1099 forms have arrived. If you have many clients, give it an extra week.
- Investment or brokerage accounts: Your 1099-B is due by February 17, but corrected forms can trickle in through March. Early-to-mid March is a safer target.
- Multiple income sources, rental property, or K-1 income: K-1 forms from partnerships and S corporations often arrive in March. You may not be able to file until late March or April.
There’s no penalty for filing early, and no reward for waiting (unless you owe money and want to hold onto your cash until the April deadline). The sweet spot for most people is filing as soon as all documents are confirmed, which typically falls between early February and mid-March depending on the complexity of your finances.