The IRS filing season opens January 23, 2024, and most people should file by April 15

The IRS does not accept tax returns before mid-January each year, even if you have all your documents ready. The exact opening date changes annually — it depends on when the IRS finishes testing its systems and when January 1 falls on a weekday. For the 2023 tax year, filing opened January 23, 2024. For the 2024 tax year, it opens January 27, 2025.

The important date to file is April 15 of the following year, unless that date falls on a weekend or federal holiday — then it moves to the next business day. This important date applies whether you file on paper or electronically. If you cannot file by April 15, you can request an extension, but that only delays filing, not payment of taxes owed.

You do not have to wait until January to gather documents. W-2 forms from employers arrive by January 31. 1099 forms from banks, investment firms, and other payers arrive by the same date. Mortgage interest statements (1098) also arrive by January 31. You can organize these as they come in during December and early January, then file as soon as the IRS opens.

Key Takeaways

  • The IRS opens its filing systems in mid-to-late January each year; you cannot file before that date even if you have all your documents.
  • The federal important date to file is April 15, unless that date falls on a weekend or holiday, in which case it moves to the next business day.
  • W-2, 1099, and 1098 forms must arrive by January 31, so you can start gathering documents in December.
  • Filing an extension moves your important date to October 15 but does not delay payment of taxes you owe — those are still due April 15.
  • State filing important date usually match the federal important date, though a few states have different dates; check your state revenue office if you live outside the continental U.S. or in a territory.

Why the IRS does not open before mid-January

The IRS needs time after December 31 to prepare its systems. Tax law changes happen throughout the year, and the agency must update its software, test it, and train staff before accepting returns. The opening date is announced in the fall, usually in October or November, so you can plan ahead.

This delay affects everyone — there is no way to file early, even if your employer sends your W-2 in December. The IRS will reject any return filed before the official opening date, whether you file electronically or on paper. If you use tax software, the software itself will not let you file until the IRS opens.

What documents you need before you can file

Gather these documents before you sit down to file. Most arrive by January 31, but some come earlier or later depending on the payer.

W-2 forms come from every employer you worked for during the year. Your employer must send you a copy by January 31. If you are self-employed or a contractor, you will not receive a W-2; instead, clients or platforms send you a 1099-NEC (nonemployee compensation) or 1099-MISC (miscellaneous income).

1099 forms report income from sources other than an employer: interest from a bank (1099-INT), dividends from investments (1099-DIV), capital gains from selling stocks or real estate (1099-S or Schedule D), unemployment benefits (1099-U), or student loan interest paid (1098-T). These arrive by January 31.

Mortgage interest statements (1098) show how much you paid in mortgage interest during the year. Your lender sends this by January 31 if you paid more than $600 in interest.

If you received a refund or credit from a prior year, you may have a letter showing the amount. Keep this for your records.

Gather receipts and records for deductions you plan to claim: charitable donations, medical expenses, property taxes, or business expenses if you are self-employed. You do not send these with your return, but the IRS can ask for them later, and you need them to prove what you claim.

When to file if you expect a refund versus owe taxes

If you expect a refund, filing early — as soon as the IRS opens in late January — gets your money back faster. The IRS processes most electronic returns within 21 days, though some take longer if they need verification. Filing on paper takes much longer, usually six to eight weeks.

If you owe taxes, you still need to file by April 15. Waiting does not reduce what you owe; it only adds penalties and interest. The penalty for filing late is usually 5 percent of the unpaid tax for each month you are late, up to 25 percent. Interest accrues daily at a rate set by the IRS each quarter — currently around 8 percent per year, though this changes.

If you cannot pay what you owe by April 15, file anyway. You can set up a payment plan with the IRS, request an offer in compromise (settling for less than you owe), or ask about hardship relief. None of these options work if you do not file.

Filing an extension if you need more time

You can request a six-month extension by filing Form 4868 (process for Automatic Extension of Time to File U.S. Individual Income Tax Return). This moves your filing important date from April 15 to October 15.

An extension gives you time to file, but it does not give you time to pay. If you owe taxes, they are still due April 15. If you do not pay by April 15, you owe penalties and interest on the unpaid amount, even if you filed an extension. To avoid penalties, estimate what you owe and pay it by April 15, then file your actual return by October 15.

You can file Form 4868 electronically through tax software, by mail, or by phone. The IRS grants extensions automatically — you do not have to explain why you need one. File the form before April 15.

State tax filing important date

Most states follow the federal important date of April 15. A few states have different dates or do not have an income tax at all. If you live in Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, or Wyoming, your state does not tax income, so you only file federal.

If you live in a U.S. territory (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, or Northern Mariana Islands), you may have different filing requirements and important date. Check your territory's revenue office.

If you file a federal extension, most states automatically extend your state important date as well. A few do not, so check your state revenue office if you are filing an extension.

What happens if you miss the important date

If you do not file by April 15 (or October 15 if you filed an extension), the IRS charges a failure-to-file penalty. This is 5 percent of the unpaid tax for each month you are late, up to 25 percent total. If you owe $2,000 and file three months late, the penalty is $300 (5 percent × 3 months).

You also owe interest on any unpaid tax, calculated daily from April 15 until you pay. The interest rate changes each quarter; the IRS publishes it on its website.

If you filed an extension and missed the October 15 important date, the same penalties explore. If you do not file at all and the IRS believes you owe tax, the agency can file a return for you (called a Substitute for Return or SFR), but this return usually claims no deductions and results in a much larger bill than you would owe if you filed yourself.

If you owe back taxes from multiple years, contact the IRS or a tax professional. The IRS has programs to help people catch up, and penalties may be reduced if you have a good reason for the delay.

Frequently Asked Questions

Can I file my taxes before the IRS opens in January?

No. The IRS does not accept returns before mid-January, regardless of whether you file electronically or on paper. Tax software will not let you file before the official opening date. You can gather documents and prepare your return, but you cannot submit it until the IRS opens.

What if my W-2 or 1099 arrives after January 31?

If a form arrives late, you can still file your return without it and amend later, or you can wait for the form to arrive. If you file without it and the IRS receives it later, they will match it to your return automatically. If there is a discrepancy, the IRS will contact you. It is usually safer to wait for all forms before filing.

Do I have to file by April 15 if I do not owe taxes?

No. If you do not owe taxes and do not expect a refund, you are not required to file. However, if you are due a refund, you must file to receive it. Refunds do not come automatically — you have to claim them on your return.

If I file an extension, do I have to pay by April 15?

Yes. An extension only delays filing, not payment. If you owe taxes, you must pay by April 15 to avoid penalties and interest. You can file your actual return by October 15, but the tax payment is due April 15.

What if April 15 falls on a weekend?

The important date moves to the next business day. If April 15 is a Saturday, the important date is Monday, April 17. If it is a Sunday, the important date is Monday, April 16. The IRS announces the exact important date each year in October.