When the IRS Starts Processing Tax Returns Each Year

The IRS filing season typically opens in late January and runs through mid-April

The IRS does not process returns on a fixed date every year. Instead, the agency sets an official start date each January, usually between January 23 and January 30, depending on when the agency finishes testing its systems. For the 2024 tax year, the IRS began accepting returns on January 29. For 2025, the IRS opened on January 27. The exact date shifts year to year because the IRS must complete security testing before it can safely accept millions of returns.

The filing important date itself is fixed: April 15 of the following year, unless that date falls on a weekend or federal holiday. If April 15 is a Saturday, the important date moves to Monday, April 17. If it falls on a Sunday, the important date moves to Monday, April 16. This important date applies to federal returns; some states have different important date or extensions.

Processing speed depends on how you file. Returns filed electronically are processed much faster than paper returns. The IRS aims to issue refunds within 21 days of accepting an e-filed return, though many arrive sooner. Paper returns can take six to eight weeks or longer, especially during peak season when the IRS is handling millions of returns simultaneously.

Key Takeaways

• The IRS opens its filing season in late January each year, with the exact date announced in December of the prior year.
• Filing electronically produces refunds in roughly three weeks, while paper returns take six to eight weeks or more.
• The April 15 important date applies to all federal returns, though some states set their own earlier important date.
• You can file as soon as the IRS opens, even if you are still waiting for documents like W-2s or 1099s from your employer or financial institutions.
• The IRS processes returns in batches throughout the season, so filing early does not may provide a faster refund than filing in March.

Why the IRS does not open on the same date every year

The IRS must complete security testing and system updates before it can accept returns. The agency uses this time to patch vulnerabilities, test new software, and may support its systems can handle the volume of returns coming in. This testing period typically takes three to four weeks after New Year's Day.

The IRS also coordinates with state tax agencies and tax software companies to may support all systems are aligned. If a critical security issue is discovered during testing, the opening date can shift. This has happened in recent years when the IRS discovered vulnerabilities that required additional fixes before the season could begin.

How processing speed varies by filing method

Electronic filing is significantly faster than paper filing. When you e-file, your return goes directly into the IRS computer system and is processed automatically. The IRS can validate your information, cross-check it against W-2s and other documents, and issue a refund without human handling.

Paper returns must be physically received, opened, scanned, and entered into the system by hand. During peak season, the IRS processes paper returns in batches, which adds weeks to the timeline. A paper return filed in early February might not be processed until late March or April, especially if the IRS discovers errors that require manual review.

If you owe taxes rather than receiving a refund, processing time matters less. The IRS will accept your return and process it, but you are not waiting for money to arrive. If you file electronically and owe, you can set up a payment plan or pay in full by the April 15 important date.

What happens if you file before your documents arrive

You can file before you receive all your documents, but you may need to file an amended return later. If you are missing a W-2 from an employer, a 1099 from a bank or investment account, or other income documents, you have two options: wait for the documents to arrive, or file with the information you have and amend later.

Employers must send W-2s by January 31. Banks and other financial institutions must send 1099s by January 31 as well. If you have not received these documents by early February, contact the employer or institution directly. If a document does not arrive by mid-February, you can file without it and request a transcript from the IRS showing the income the agency has on record.

Filing early without all documents can delay your refund if the IRS later receives a document showing different income than what you reported. The IRS will compare your return to the documents it receives and may hold your refund while it investigates the discrepancy.

State filing important date and extensions

Most states follow the federal April 15 important date, but a few set earlier dates. Massachusetts, for example, has historically set its important date for May 1, though this can change. Some states do not have a state income tax at all, so only the federal important date applies.

If you need more time, you can request a federal extension by filing Form 4868 before April 15. This gives you until October 15 to file your return. An extension does not extend the important date to pay taxes you owe; you must estimate your tax liability and pay it by April 15 to avoid penalties and interest. However, an extension does give you until October 15 to file the actual return and claim any refund you are due.

Some states automatically grant an extension if you have a federal extension, while others require a separate state extension request. Check your state's tax agency website to confirm what is required in your state.

How to track your return once you have filed

The IRS provides a tool called "Where's My Refund?" on its website. You can enter your Social Security number, filing status, and expected refund amount to see the status of your return. The tool updates once per day, usually overnight, so checking multiple times in a single day will not show new information.

If you filed electronically, your return should appear in the system within 24 hours. If you filed on paper, it may take several weeks before the IRS has scanned and entered your return into the system. Once it appears, the tool will show whether the IRS is still processing it, has approved it, or has issued your refund.

If your refund is delayed beyond the expected timeframe, the IRS may be reviewing your return for errors or requesting additional information. You will receive a letter in the mail if the IRS needs more details. Do not ignore these letters; respond within the timeframe given to avoid losing your refund or facing penalties.

Common reasons returns are delayed

The most common reason for a delayed refund is an error on the return itself. This includes mismatched income information, incorrect Social Security numbers, or math errors. The IRS catches these automatically and holds the return while it investigates.

Claiming certain credits, such as the Earned Income Tax Credit or the Child Tax Credit, can also trigger additional review. These credits are subject to higher scrutiny because they are refundable, meaning you can receive more money back than you paid in taxes. The IRS verifies that you meet the requirements before issuing the refund.

Identity theft and fraud prevention also cause delays. If the IRS suspects your return may be fraudulent, it will hold it for review. This can happen if someone else has already filed a return using your Social Security number, or if your return contains information that does not match IRS records.

Frequently Asked Questions

Can I file my return before the IRS opens for the season?

No. Tax software will not allow you to submit a return before the IRS officially opens its filing season. You can prepare your return and have it ready to file, but you cannot transmit it electronically until the IRS begins accepting returns. Paper returns can technically be mailed before the season opens, but the IRS will not process them until after the official start date.

What if I file on April 14 and the important date is April 15?

If you file electronically on April 14, your return will be accepted because the IRS accepts e-filed returns until midnight on April 15. If you mail a paper return on April 14, it may not arrive by April 15, which means it will be considered late. For paper returns, the postmark date matters; if your return is postmarked by April 15, it is considered on time even if it arrives later.

Does filing early mean I get my refund earlier?

Not necessarily. The IRS processes returns in batches throughout the season, so filing in late January does not may provide a faster refund than filing in March. However, filing early does mean your return is in the queue sooner, which can help if there are delays later in the season when the IRS is overwhelmed with returns.

What happens if I miss the April 15 important date?

If you owe taxes and miss the important date, you will owe penalties and interest on the unpaid amount. If you are due a refund, you can still file late and claim your refund, but you have only three years from the original important date to claim it. After three years, the IRS keeps any refund you are due.

Can I file my state return before my federal return?

Yes. Most states accept returns as soon as the IRS opens, and some states open their own filing season on different dates. You can file your state return independently of your federal return. However, many people file both at the same time using tax software that handles both returns together.