The tax year you file for in 2024 is 2023

When you file taxes in 2024, you are reporting income and deductions from January 1 through December 31, 2023. This is called the 2023 tax year. The IRS calls the year you are filing for the "tax year," and it is always the year before the calendar year you are actually filing in.

The deadline to file your 2023 tax return is April 15, 2024. If you file after that date, you may owe penalties and interest, even if the IRS owes you a refund. You can request an extension to October 15, 2024, but that only extends the filing deadline — taxes owed are still due on April 15.

Key Takeaways

  • You file for tax year 2023 in 2024, meaning you report all income earned from January 1 through December 31, 2023.
  • The filing deadline for the 2023 tax year is April 15, 2024, unless you request an extension.
  • If you file late without an extension, you will owe penalties and interest even if you are owed a refund.
  • An extension moves your deadline to October 15, 2024, but does not extend the date taxes are actually due.

Why the tax year is always one year behind

The IRS gives you time to gather documents and file after the year ends. Your employer sends you a W-2 form by January 31 showing what you earned in 2023. Banks and investment firms send 1099 forms by the same date. You need these documents before you can file accurately, so the filing deadline is pushed to April 15.

This delay is standard every year. You always file for the previous calendar year, never the current one. If you are filing in January 2024, you are still filing for 2023. If you file in March 2024, you are filing for 2023. The tax year does not change until after April 15 passes and the new filing season begins.

What documents you need for the 2023 tax year

Gather documents that show your 2023 income. If you worked as an employee, your employer will send a W-2 form by January 31, 2024. If you received interest, dividends, or capital gains, you will receive 1099 forms from banks and investment companies. If you are self-employed, you will need records of all income and business expenses from 2023.

You will also need records of deductions and credits. Keep receipts for mortgage interest, property taxes, charitable donations, and medical expenses if you itemize. If you paid student loan interest or had education expenses, gather those documents too. The IRS does not require you to send these documents with your return, but you must keep them for at least three years in case of an audit.

Filing deadlines and extensions for 2023 taxes

The standard deadline to file your 2023 return is April 15, 2024. If April 15 falls on a weekend or holiday, the deadline moves to the next business day. In 2024, April 15 is a Monday, so that is your deadline.

You can request a six-month extension by filing Form 4868 before April 15, 2024. This moves your filing deadline to October 15, 2024. However, an extension to file is not an extension to pay. If you owe taxes, they are still due on April 15. If you do not pay by then, you will owe interest and penalties on the unpaid amount, even if you file the extension.

What happens if you file late

If you do not file by April 15, 2024, and you do not have an approved extension, the IRS will charge you a failure-to-file penalty. This penalty is usually 5 percent of the taxes owed for each month you are late, up to 25 percent. You will also owe interest on any unpaid taxes, calculated from the original due date.

If you are owed a refund, filing late does not cost you in penalties, but you will not receive your refund until you file. The IRS will not send you money you are owed unless you submit a return. However, you can only claim a refund for up to three years back. If you do not file a 2023 return by April 15, 2027, you lose the right to that refund.

The difference between tax year and filing year

The tax year is the period of time your return covers — in this case, January 1 through December 31, 2023. The filing year is when you actually submit your return — in this case, 2024. These are always one year apart.

This matters because some forms and programs ask which tax year you are filing for. If someone asks "What tax year are you filing for?" the answer is 2023. If they ask "When are you filing?" the answer is 2024. The tax year is what appears on your return itself, in the top right corner of Form 1040.

Frequently Asked Questions

Can I file my 2023 taxes before January 31, 2024?

No. The IRS does not accept returns for a tax year until January 1 of the following year. You cannot file your 2023 return before January 1, 2024. Most tax software and tax preparers will not let you file before that date because the IRS will reject it.

If I file in May 2024, what tax year am I filing for?

You are filing for tax year 2023. The tax year you file for depends on the income you are reporting, not the month you file. If you file in May 2024 and report 2023 income, you are filing a 2023 return. If you file late, you will owe penalties unless you had an approved extension.

Do I need to file a 2024 tax return in 2024?

No. In 2024, you file for 2023 income. You will file for 2024 income in 2025, after you receive your 2024 W-2 and 1099 forms in January 2025. Each tax year is filed in the year after it ends.

What if I did not earn much in 2023 — do I still have to file?

It depends on your income and filing status. The IRS sets a minimum income threshold each year. If your income is below that threshold, you are not required to file. However, if taxes were withheld from your paychecks, you should file to get a refund. Check the IRS website or speak with a tax preparer to know if you must file based on your 2023 income.