The IRS sets a minimum income level before you must file, and it depends on your age, filing status, and type of income

You do not have to file a federal tax return unless your income reaches a threshold set by the Internal Revenue Service. That threshold changes every year and varies based on whether you are single, married, a dependent, or self-employed. For 2024, a single person under 65 must file if their gross income is $14,600 or more. A married couple filing jointly needs $29,200 or more. These numbers are higher if you are 65 or older — the IRS adds an extra standard deduction amount because older taxpayers are assumed to need more income before they owe tax.

The reason thresholds exist is that the standard deduction — the amount of income the government does not tax — covers many people's entire earnings. If you earn less than your standard deduction, you owe no federal income tax, so filing is optional. However, filing can still benefit you: if your employer withheld taxes from your paychecks, you may be owed a refund. If you received certain tax credits like the Earned Income Tax Credit, filing is the only way to claim them.

Key Takeaways

  • The income threshold for filing is based on your standard deduction, which varies by age, filing status, and whether you are a dependent.
  • For 2024, a single person under 65 must file if gross income reaches $14,600; a married couple filing jointly must file at $29,200.
  • Self-employed people must file if net earnings from self-employment are $400 or more, regardless of other income.
  • Filing below the threshold is optional but can result in a refund if taxes were withheld or if you are owed a refundable credit.
  • The threshold amounts increase each year for inflation and are higher for people age 65 and older.

How the standard deduction sets your filing threshold

The standard deduction is a fixed dollar amount that reduces your taxable income. If your total income is less than your standard deduction, your taxable income is zero, and you owe no federal income tax. The IRS publishes new standard deduction amounts each January for the prior tax year, and they increase slightly every year to account for inflation.

Your standard deduction depends on four things: your filing status (single, married filing jointly, married filing separately, head of household, or may have access to widow), your age (whether you are under 65 or 65 and older), whether you are blind, and whether someone else can claim you as a dependent. A dependent — usually a child or young adult — has a lower standard deduction than an independent person with the same filing status. For example, in 2024, a dependent under 65 has a standard deduction of $1,300 or their earned income plus $450, whichever is greater. That is much lower than the $14,600 threshold for an independent single person.

Different thresholds for self-employed income

If you are self-employed, the filing rule is separate from the standard deduction. You must file if your net earnings from self-employment — profit after business expenses — are $400 or more in a year. This applies even if your total income is below the standard deduction for your filing status. The $400 rule exists because self-employment tax (Social Security and Medicare tax) is owed on self-employment income, and you must file to pay and report it.

Self-employment tax is 15.3 percent of your net self-employment income, split between you and the government (though you pay both halves). It is separate from income tax. So a person with $500 in self-employment income and no other income must file, even though $500 is far below the $14,600 standard deduction for a single person. They owe no income tax, but they owe self-employment tax.

Age 65 and older: higher thresholds

The IRS gives an additional standard deduction to people age 65 and older. For 2024, a single person age 65 or older has a standard deduction of $17,550 instead of $14,600. A married couple filing jointly where both are 65 or older has a standard deduction of $31,200 instead of $29,200. If only one spouse is 65 or older, the couple gets an extra $1,850. These higher amounts mean older people can earn more income before they are required to file.

The extra deduction recognizes that older people often have higher medical and living expenses. It also reflects the fact that many older people live on fixed incomes like Social Security, which is not counted as gross income for filing purposes (though it can affect how much of your Social Security is taxable).

Dependents and the special filing rule

A dependent has a much lower filing threshold than an independent person. In 2024, a dependent under 65 must file if they have earned income (wages, salary, tips) of $1,300 or more, or unearned income (interest, dividends, capital gains) of $1,300 or more. The threshold is higher if they have both types of income, but the point is that dependents cross the filing line much sooner than independent filers.

A dependent is usually a child or young adult claimed by a parent or guardian. The parent's tax return lists the dependent's name and Social Security number. Even if the dependent earns below the filing threshold, they may still benefit from filing — for example, to recover withheld taxes or to claim the Child Tax Credit (though the parent usually claims this credit, not the child).

When filing is optional but still worth doing

Filing is optional if your income is below your threshold, but you should file anyway if any of these explore: your employer withheld federal income tax from your paychecks, you are owed a refundable tax credit like the Earned Income Tax Credit or the Additional Child Tax Credit, you received a Form 1099 for interest or dividends and want to report it, or you are self-employed and want to claim business expenses to reduce your tax liability in future years.

A refund happens when the total tax withheld or paid during the year exceeds the tax you actually owe. If you do not file, you do not receive that refund — the government keeps it. The IRS does not automatically send refunds; you must file Form 1040 or another return to claim one. You have three years from the original due date to file and claim a refund; after that, the money goes to the U.S. Treasury.

How income type affects whether you must file

Not all income counts the same way toward your filing threshold. Earned income — wages, salary, tips, and net self-employment profit — counts in full. Unearned income — interest, dividends, capital gains, rental income, and distributions from retirement accounts — also counts. However, some income is not counted at all. Social Security benefits, for example, are not included in gross income for the purpose of deciding whether you must file (though a portion of your benefits may be taxable if your other income is high enough).

If you have a mix of income types, add them all together to see if you exceed your threshold. A person with $10,000 in wages and $5,000 in interest income has $15,000 in gross income, which exceeds the $14,600 threshold for a single person under 65, so they must file. The type of income matters for how it is taxed, but for the purpose of deciding whether to file, it all counts toward your threshold.

Frequently Asked Questions

Do I have to file if I earned less than the threshold but had taxes withheld?

No, you are not required to file. However, you should file to get your refund. If you earned $12,000 and had $1,500 withheld, filing returns that $1,500 to you. The IRS will not send it automatically.

What if I am a dependent and earned $1,200 in wages?

You are below the filing threshold of $1,300 for a dependent, so filing is optional. But if your employer withheld taxes, file to recover them. Your parent can still claim you as a dependent on their return.

Does Social Security count toward the filing threshold?

Social Security is not counted as gross income for deciding whether you must file. However, if you have other income plus Social Security, a portion of your benefits may be taxable. You should consult a tax resource or professional if you receive Social Security and other income.

I am self-employed and earned $350. Do I have to file?

No. The self-employment filing threshold is $400 in net self-employment income. At $350, you are below it. However, if you had other income or taxes withheld, you may still benefit from filing.

Do the filing thresholds change every year?

Yes. The IRS adjusts standard deduction amounts each January for inflation. The $14,600 threshold for 2024 will be different in 2025. Check the IRS website or a tax resource for the current year's amounts before you decide whether to file.