A tax return is a form you send to the IRS that reports your income and calculates how much tax you owe

A tax return is a document — usually a paper form or electronic file — that you submit to the Internal Revenue Service (IRS) showing how much money you earned in a year and how much tax you should pay on it. The IRS uses your return to check whether you paid the right amount of tax through your paychecks or quarterly payments. If you overpaid, you get a refund. If you underpaid, you owe the difference.

Most people file a tax return once per year, usually between January and April 15. You file for the previous calendar year — so in 2024, you file a return for income you earned in 2023. The form itself is called a Form 1040 (the main individual income tax form), though you may also file additional forms depending on your situation.

You do not always have to file. The IRS sets an income threshold each year — if your income falls below that threshold, you are not required to file. However, if you had taxes withheld from your paychecks or made quarterly payments, filing a return is how you recover that money as a refund.

Key Takeaways

  • A tax return reports your annual income to the IRS and shows whether you paid the correct amount of tax.
  • Most people file Form 1040, the standard individual income tax form, once per year by April 15.
  • If your employer withheld taxes from your paychecks, filing a return is how you get a refund if you overpaid.
  • The IRS sets an income threshold each year; if you earn below it, you are not required to file, but you may still want to.

What information goes on a tax return

Your tax return includes your personal information (name, address, Social Security number), your filing status (single, married filing jointly, head of household, and so on), and a detailed accounting of your income for the year. Income includes wages from a job, self-employment income, interest, dividends, rental income, and other sources.

You also report deductions and credits. A deduction reduces the amount of income that is taxed — common deductions include the standard deduction (a flat amount everyone can claim) or itemized deductions (specific expenses like mortgage interest or charitable donations). A credit directly reduces the tax you owe dollar-for-dollar, so it is more valuable than a deduction. Examples include the Earned Income Tax Credit (EITC) and the Child Tax Credit.

At the end of the return, you calculate your total tax liability (what you owe) and compare it to what you already paid through withholding or estimated tax payments. The difference is either a refund owed to you or an amount you still owe to the IRS.

Who has to file a tax return

You must file if your income exceeds the threshold set by the IRS for your filing status and age. For 2023, the threshold was $13,850 for a single person under 65, but this amount changes each year. If you are self-employed, the threshold is lower — you must file if your net self-employment income is $400 or more, regardless of other income.

Even if you do not meet the filing requirement, you should file if you had taxes withheld from your paychecks or made estimated tax payments. Filing is the only way to recover that money. You should also file if you are claiming a refundable credit like the EITC, which can result in a refund even if you owe no tax.

Dependents — usually children or other relatives you support — have their own filing requirements based on their income. If a dependent has earned income (from a job) or unearned income (from interest or dividends), they may need to file separately.

How to file a tax return

You have three main options: file on paper, file electronically using tax software, or work with a tax professional. Most people file electronically because it is faster and the IRS processes it more quickly.

If you file on paper, you download or request the forms from the IRS website or a local library, fill them out by hand, and mail them to the IRS address listed on the form. This takes longer — the IRS typically processes paper returns in four to six weeks.

If you file electronically, you can use free tax software (the IRS Free File program offers free software to people earning below a certain income threshold), paid software like TurboTax or H&R Block, or a tax professional. Electronic filing is processed in about two to three weeks, and you can set up direct deposit so your refund goes straight to your bank account.

A tax professional — a CPA, enrolled agent, or tax preparer — can file on your behalf. They charge a fee, but they handle the entire process and can answer questions about your specific situation.

What happens after you file

Once you file, the IRS sends you a confirmation that they received your return. If you filed electronically, this happens within 24 hours. If you filed on paper, it takes longer.

The IRS then reviews your return. If everything matches their records (your W-2 forms from employers, 1099 forms from other income sources, and so on), they process it and send you a refund or a bill. If there is a discrepancy, they may contact you by mail asking for more information or documentation.

If you are owed a refund, the timing depends on how you filed. Electronic filers with direct deposit typically receive refunds within 21 days. Paper filers and those requesting a check by mail wait longer — usually four to six weeks or more.

Common documents you need to file

Before you file, gather documents that show your income and any payments you made. Your employer sends you a W-2 form by January 31 showing wages and taxes withheld. If you had other income — interest, dividends, rental income, or self-employment income — you receive a 1099 form (the specific type depends on the income source).

If you are claiming deductions, you may need receipts or statements. For itemized deductions, keep records of charitable donations, medical expenses, or mortgage interest statements. If you are claiming the EITC or Child Tax Credit, have your Social Security number and your children's Social Security numbers ready.

If you are self-employed, gather records of your business income and expenses — invoices, receipts, mileage logs, and so on. You will need these to calculate your net profit or loss.

Tax returns and housing assistance programs

Some housing assistance programs ask to see your tax return as proof of income. A tax return shows the IRS — and the program — exactly what you earned in a year, which is more reliable than a recent paystub alone. If you are applying for rental assistance, a housing voucher, or other housing support, you may be asked to provide your most recent tax return or a transcript of it.

A tax transcript is an official IRS document showing the information from your tax return. You can request one free from the IRS website or by phone. It is often accepted in place of the actual return because it is an official government record.

If you did not file a tax return in previous years but are now applying for housing assistance, you may need to file back returns. Some programs require proof of income for the past two years. Talk to the housing program about what they need before you file.

Frequently Asked Questions

What is the difference between a tax return and a tax refund?

A tax return is the form you file with the IRS. A tax refund is money the IRS sends back to you if you overpaid taxes during the year. You only get a refund if you file a return and the IRS determines you paid more than you owed.

Do I need to file if I did not earn much money?

If your income is below the IRS threshold for your filing status, you are not required to file. However, if you had taxes withheld from paychecks or made estimated payments, filing a return gets you a refund. You should also file if you are claiming the EITC, which can result in a refund even with no tax owed.

How long does it take to get a refund?

If you file electronically and request direct deposit, the IRS typically processes your refund within 21 days. Paper filers and those requesting a check by mail usually wait four to six weeks or longer. You can check the status on the IRS website.

Can I file a tax return for a previous year?

Yes. You can file a return for any previous year, though the IRS recommends filing as soon as possible. If you are owed a refund, there is a time limit — generally three years from the filing deadline. If you owe taxes, filing late results in penalties and interest.

What if I lost my W-2 or other tax documents?

Contact your employer and ask for a duplicate W-2. If they cannot provide one, you can request a wage and income transcript from the IRS, which shows the same information. For other documents like 1099 forms, contact the organization that issued them or request a transcript from the IRS.