The 2024 tax filing important date is April 15, 2025

You must file your 2024 federal income tax return by April 15, 2025, unless you request an extension. This date applies to most individual filers. If April 15 falls on a weekend or holiday, the IRS moves the important date to the next business day — in 2025, April 15 is a Tuesday, so that is your actual important date.

The same April 15 important date applies to state income tax returns in most states, though a few states have different dates. Check your state's tax agency website if you live outside the continental United States or in a territory.

Filing early — even in January or February — does not hurt you and can speed up your refund if you are owed money. The IRS begins accepting returns in late January each year, once the tax forms and guidance are finalized.

Key Takeaways

  • The federal important date for 2024 returns is April 15, 2025, and filing earlier does not create problems or trigger audits.
  • If you owe taxes, filing by April 15 avoids penalties and interest charges that begin accruing on April 16.
  • If you expect a refund, filing sooner means the IRS processes your return and sends your money faster, usually within 21 days of acceptance.
  • You can request a six-month extension to October 15, 2025, but an extension to file is not an extension to pay — taxes owed are still due April 15.
  • State tax important date usually match the federal important date, but some states differ, so confirm your state's date if you file a state return.

Why the April 15 important date matters for what you owe

If you owe federal income tax, the amount you owe is calculated as of April 15, 2025. Any taxes unpaid after that date begin accruing failure-to-pay penalties and interest. The penalty is typically 0.5% of the unpaid tax per month, and interest compounds daily. These charges add up quickly, so filing and paying by the important date protects you from extra costs.

If you cannot pay the full amount by April 15, you still need to file your return on time. You can then set up a payment plan with the IRS through their website or by phone. A payment plan stops the failure-to-pay penalty from growing as fast as it would if you neither filed nor paid.

If you file late but owe nothing — or are owed a refund — there is no penalty. The IRS only penalizes late filing when you owe taxes.

How filing early affects your refund

The IRS does not process returns faster based on when you file, but it does process them in the order received. If you file in early February, your return enters the queue before one filed in late March. The IRS typically issues refunds within 21 days of accepting your return, though some returns take longer if they require additional review.

Filing early also gives you time to catch errors before the important date. If you discover a mistake after filing, you can file an amended return (Form 1040-X) within three years, but catching errors before you file the first time is simpler.

Direct deposit speeds up refunds compared to a mailed check. If you provide your bank account information on your return, the IRS deposits your refund directly, usually within the 21-day window. A paper check takes an additional week or two after the IRS mails it.

When you need to file before April 15

Most filers can wait until closer to April 15, but some situations require earlier action. If you are self-employed or have business income, you may want to file by March 15 to meet the important date for paying first-quarter estimated taxes for 2025 (due April 15). Filing your 2024 return first lets you calculate what you owe for 2025.

If you are waiting for a specific document — like a W-2 from an employer or a 1099 from a client — you cannot file until you have it. Employers must send W-2s by January 31, and most third-party payers must send 1099s by the same date. If you do not receive a document by early February, contact the issuer directly.

If you are filing jointly with a spouse and one of you is deployed with the military, the IRS grants an automatic extension to June 15. You do not need to request it; it applies automatically if you file a joint return.

How to request a filing extension to October 15

An extension gives you until October 15, 2025 to file your return, but it does not extend the important date to pay. Taxes owed are still due April 15. If you request an extension and owe money, pay as much as you can by April 15 to minimize penalties and interest on the unpaid balance.

To request an extension, file Form 4868 (process for Automatic Extension of Time To File U.S. Individual Income Tax Return) by April 15, 2025. You can file it electronically through tax software, by mail, or by phone. Filing Form 4868 is free. The extension is automatic — the IRS does not review your reason or deny it.

An extension is useful if you are waiting for documents, need time to gather records, or are out of the country on April 15. It is not useful for avoiding payment of taxes you know you owe, because the interest and penalties continue to accrue on unpaid amounts after April 15.

State tax filing important date and differences

Most states that tax income follow the federal April 15 important date. However, a few states have different dates or different rules. Massachusetts and Maine, for example, follow April 15. Illinois allows until the same day as the federal important date. If you live in a state without an income tax — such as Florida, Texas, Wyoming, or South Dakota — you have no state return to file.

If you live in one state but work in another, you may owe tax to both. The state where you work usually taxes your wages, and your home state may tax your total income. File returns in both states if required. Some states offer credits to prevent double taxation on the same income.

Check your state's tax agency website or call their helpline to confirm the important date for your state. State important date can change year to year, and some states offer extensions that differ from the federal extension.

What happens if you miss the April 15 important date

If you miss April 15 without filing an extension or requesting one afterward, the IRS charges a failure-to-file penalty in addition to any failure-to-pay penalty. The failure-to-file penalty is typically 5% of unpaid taxes per month, up to 25%. This penalty is separate from the 0.5% monthly failure-to-pay penalty, so the total can reach 5.5% per month in the first five months.

If you owe money and file late, you also owe interest on the unpaid amount from April 15 forward. Interest is compounded daily and changes quarterly based on the federal rate.

If you are owed a refund and file late, there is no penalty, but you lose the refund if you wait more than three years. The IRS keeps unclaimed refunds after three years. File as soon as you can to recover money owed to you.

If you realize you will miss the important date, file Form 4868 before April 15 to request an extension. Filing the extension form stops the failure-to-file penalty from starting, even if you do not file your actual return until October 15.

Frequently Asked Questions

Can I file my 2024 return in January 2025?

Yes. The IRS begins accepting 2024 returns in late January, usually around January 27 or 28. Filing in January does not trigger an audit or create any problems. If you are owed a refund, filing early means you receive it sooner, typically within 21 days of the IRS accepting your return.

What if April 15 falls on a weekend?

The IRS moves the important date to the next business day. In 2025, April 15 is a Tuesday, so the important date is April 15. If April 15 were a Saturday, the important date would be Monday, April 17. Check the IRS website each year to confirm the exact important date.

Do I have to file if I did not earn much income?

It depends on your income level and filing status. The IRS sets a threshold each year below which you do not have to file. For 2024, most single filers under age 65 do not have to file if their income was below $14,600. However, filing anyway may get you a refund if taxes were withheld from your paychecks. Use the IRS's interactive tool on their website to determine whether you must file.

If I owe taxes, can I file late and set up a payment plan?

You can set up a payment plan, but you still face penalties and interest for filing and paying late. File your return by April 15 or request an extension by that date. Then contact the IRS to arrange a payment plan for the amount you owe. A payment plan reduces the failure-to-pay penalty compared to paying nothing, but filing on time avoids the failure-to-file penalty entirely.

Do I need to file a state return if I only owe federal taxes?

It depends on your state. If you live in a state without income tax, you have no state return to file. If you live in a state that taxes income, you usually must file a state return if you file a federal return, even if you owe no state tax. Some states have different income thresholds than the federal government. Check your state's tax agency to confirm your filing requirement.