The IRS opens the filing season on a set date each year, but you can file before that date if you have all your documents

The IRS typically opens the filing season in late January or early February. For the 2024 tax year (filed in 2025), filing opened on January 29. You cannot file before the IRS opens, even if you have your W-2s and other forms — the system straightforward will not accept returns.

However, you do not have to wait until the official opening date to gather documents and prepare your return. Many people file within the first week or two of the season opening, which means starting your preparation in late December or early January makes sense.

The key constraint is having the right documents in hand. Your employer must send you a W-2 by January 31. If you received unemployment benefits, you will get a 1099-G. If you earned interest or dividends, you will receive a 1099-INT or 1099-DIV. If you are self-employed, you need to compile your income and expense records yourself. Without these, you cannot file an accurate return.

Key Takeaways

  • The IRS opens the filing season in late January or early February each year, and you cannot file before that date even if your documents are ready.
  • Your employer must send your W-2 by January 31, and other income forms (1099s) arrive on similar timelines, so you typically have all documents by early February.
  • Filing early in the season — within the first few weeks — can speed up your refund if you are owed money.
  • If you file before all your documents arrive, you may have to file an amended return later, which delays your refund.
  • The tax important date is April 15 unless it falls on a weekend or holiday, in which case it moves to the next business day.

Why the IRS sets an opening date

The IRS opens the filing season on a fixed date because it needs time to update its systems with new tax law changes and test the software that processes returns. The agency also coordinates with state tax agencies, which often open their own filing seasons on the same day or shortly after.

Attempting to file before the opening date will result in an error message. The IRS system will not accept your return, no matter how complete it is. This is a technical barrier, not a policy you can work around by filing through a tax professional or software provider.

When your income documents arrive

Most W-2s arrive by January 31, though some employers send them earlier. If you worked for multiple employers, you may receive W-2s on different dates. The IRS requires employers to send W-2s by January 31, but does not penalize them for sending earlier.

1099 forms — for self-employment income, interest, dividends, and other sources — also have a January 31 important date. However, some arrive in late January and others in early February. If you are waiting for a 1099 from a brokerage or investment account, check your online account portal first; many firms post the form there before mailing it.

If you are self-employed, you do not receive a form from anyone else. You compile your own records from invoices, receipts, and bank statements. You can start organizing these at any time, but you cannot file your return until the IRS opens the season.

Filing early versus filing late in the season

Filing within the first two weeks of the season opening has one clear advantage: if you are owed a refund, you will receive it faster. The IRS processes returns in the order they are received, and early filers typically see refunds within 21 days if they file electronically and choose direct deposit.

Filing in March or April does not change the amount of your refund, but it does delay when you receive it. If you file on April 1, you may not see your refund until late April or early May. If you are counting on that money, filing early matters.

There is no tax advantage to filing early. Your tax liability is the same whether you file on February 1 or April 14. The only reason to rush is to get your refund sooner or to avoid the stress of a last-minute filing.

What happens if you file before all your documents arrive

If you file your return and then receive a W-2 or 1099 that shows different income than what you reported, you will need to file an amended return using Form 1040-X. This delays your refund because the IRS must process both the original return and the amendment.

To avoid this, wait until you have received all your income documents before filing. If you are unsure whether a document is coming, contact the issuer directly. Your employer's payroll department can tell you when your W-2 will arrive. Your bank or brokerage can confirm whether a 1099 is on the way.

If you file and then realize you are missing a document, do not panic. You can file an amended return, and the IRS will correct your tax liability. However, this takes longer than getting it right the first time.

The April 15 important date and extensions

The tax important date is April 15 of the year following the tax year. If April 15 falls on a Saturday or Sunday, the important date moves to the following Monday. If it falls on a federal holiday, the important date moves to the next business day. In 2025, April 15 is a Tuesday, so that is the important date for the 2024 tax year.

You do not have to file by April 15 if you request an extension. Form 4868 gives you until October 15 to file your return. However, an extension to file is not an extension to pay. If you owe taxes, you must estimate what you owe and pay it by April 15, or you will owe interest and penalties on the unpaid amount.

Filing an extension makes sense if you do not have all your documents by mid-April or if you need more time to organize your records. It does not reduce your tax bill or give you extra time to pay if you owe.

Getting your documents organized before the season opens

You can prepare for filing season in December and early January by gathering documents you already have. Collect last year's tax return, any receipts for deductible expenses, records of charitable donations, and mortgage interest statements (Form 1098) if you own a home.

If you use tax software or work with a tax professional, you can input this information before the IRS opens the season. Once the season opens and you have your W-2s and 1099s, you can complete your return and file when ready.

If you are self-employed, organize your income and expense records by category — meals, supplies, equipment, mileage, and so on. This makes it faster to fill out Schedule C once the filing season opens.

Frequently Asked Questions

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

No. You can only file for a tax year after that year has ended. You cannot file for 2025 until January 1, 2026 at the earliest, and the IRS will not accept it until the filing season opens in late January or early February 2026.

What if my employer has not sent my W-2 by February 1?

Contact your employer's payroll or HR department and ask when it will arrive. If it is more than a few days late, ask them to email or mail it to you. If your employer does not send it by the end of February, you can contact the IRS at 800-829-1040 to report the missing form.

Do I have to file as soon as the season opens?

No. You can file anytime between the opening date and April 15. Filing early gets you a refund faster if you are owed money, but there is no penalty for filing in March or early April.

Can I file my return if I am still waiting for a 1099 from my bank?

You can file if you know the amount of interest or dividends you earned. Check your online account or your year-end statement. If the 1099 arrives later and shows a different amount, you will need to file an amended return.

What if I miss the April 15 important date?

You will owe a failure-to-file penalty and interest on any taxes owed. The penalty is usually 5% of unpaid taxes per month, up to 25%. If you file an extension by April 15, the penalty is reduced or eliminated if you pay any taxes owed by April 15.