The IRS filing season typically opens in late January

The IRS does not accept tax returns on January 1. Filing season usually begins in late January — most years around January 24 to January 29 — and runs through April 15. The exact start date shifts slightly each year because the IRS needs time after the holidays to test its systems and process forms from employers and financial institutions.

You can prepare your return before the season opens, but the IRS will not process it until after that start date. If you file early, your return sits in a queue. The IRS processes returns in the order they arrive once the season begins, so filing on day one does not may provide faster processing than filing in February or March.

The IRS publishes the opening date each November on its website and in press releases. Tax software companies and payroll processors also announce the date so employers and tax preparers can plan. If you use a tax professional or software, they will tell you when you can file.

Key Takeaways

  • Filing season opens in late January most years, usually between January 24 and January 29, and closes April 15.
  • You can prepare your return before the season opens, but the IRS will not process it until after the official start date.
  • The exact opening date varies by year and is announced by the IRS in November of the prior year.
  • Filing early in the season does not speed up processing — the IRS works through returns in the order received.
  • If you owe taxes, filing after April 15 triggers penalties and interest; if you are owed a refund, there is no penalty for filing late.

Why the IRS does not open on January 1

The IRS needs time after the new year to prepare its systems. Employers must send W-2 forms to workers and the IRS by January 31. Financial institutions send 1099 forms (for interest, dividends, and other income) by the same date. The IRS cannot reliably process returns until these documents arrive and are loaded into its matching system.

The agency also uses the weeks after New Year's Day to test its computers, update software, and train staff. A malfunction during filing season affects millions of people, so the IRS runs extensive checks before opening the gates. This is why the opening date is always after January 20 and rarely before January 24.

What happens if you file before the season opens

If you submit a return before the official start date, the IRS will reject it or hold it without processing. Some tax software will not let you file before the season opens. Others will accept your return but send it to the IRS after the opening date.

Filing early does not hurt you if you are owed a refund — you simply wait longer for the money. If you owe taxes, filing before the season opens means your return does not start the clock on your payment deadline. You still owe the full amount by April 15, and penalties begin accruing if you do not pay by then.

How to find the exact opening date for the current year

The IRS announces the filing season opening date in November. You can find it on IRS.gov by searching "filing season" or "when does filing season open." The agency also sends press releases to news outlets and tax industry groups.

Tax software companies display the opening date prominently when you log in during late fall and early winter. If you work with a tax preparer or accountant, they receive the date directly from the IRS and will tell you when you can file. You can also call the IRS at 1-800-829-1040 to ask, though wait times are long during filing season.

State filing seasons and deadlines

Most states follow the federal opening date, but some open earlier or later. A few states open in early January. Others wait until February. State deadlines also vary — most align with the federal April 15 deadline, but some have different dates.

If you file a federal return, check your state's tax agency website to see when state returns open. Many people file both at the same time, but you are not required to. You can file federal first and state later, or vice versa, as long as both are filed by their respective deadlines.

What to do if you need to file before the season opens

If you have a specific reason to file early — such as needing a refund for a bill or to meet a loan requirement — you have limited options. You can prepare your return and have it ready to submit the moment the season opens. Some tax software lets you schedule a return to file automatically at a specific time.

If you absolutely must file before the IRS opens, you can file on paper by mail, though the IRS will not process it until after the season begins. Mailing early does not speed up processing. For most people, waiting for the season to open is the only practical choice.

Frequently Asked Questions

Can I file my taxes in December for the next year?

No. You must file for the year you are reporting on. You file 2024 taxes in early 2025 (after the season opens in late January). You cannot file 2025 taxes until filing season opens in January 2026. The IRS will reject any return filed for a year that has not yet ended.

What if April 15 falls on a weekend or holiday?

The deadline moves to the next business day. If April 15 is a Saturday, the deadline becomes Monday, April 17. If it falls on a Sunday, the deadline is Monday, April 16. The IRS announces the actual deadline each year on its website.

Do I have to file on April 15 or can I file later?

If you owe taxes, you must pay by April 15 or face penalties and interest. If you are owed a refund, you can file anytime — there is no penalty for filing late. However, the IRS can only refund taxes from the past three years, so filing very late may cost you money.

Will my refund be delayed if I file on the first day of filing season?

Not necessarily. The IRS processes returns in the order received, so filing early can mean your refund arrives sooner. However, if your return is complex or requires verification, processing takes longer regardless of when you file. Most refunds are issued within 21 days, but some take longer.