Not everyone has to pay federal income tax, but the rules depend on your age, income, filing status, and type of income

Whether you owe federal income tax comes down to how much money you made and what kind of money it was. The IRS sets a standard deduction — a dollar amount below which you owe nothing. If your income falls below that line, you file nothing. If it's above, you file a return and pay tax on the amount over the threshold. The standard deduction changes each year and varies based on whether you're single, married, over 65, or claimed as a dependent on someone else's return.

Some types of income are never taxed at the federal level — gifts, inheritances, and life insurance payouts, for example. Other income is always taxed no matter how small the amount: self-employment income, for instance, triggers a tax return requirement at just $400 in a year, even if you're otherwise below the standard deduction.

Key Takeaways

  • You don't owe federal income tax if your total income is below the standard deduction for your filing status, which the IRS updates yearly.
  • Self-employment income of $400 or more requires you to file a return and pay self-employment tax, regardless of the standard deduction.
  • Some income — gifts, inheritances, and certain disability payments — is never subject to federal income tax.
  • If you're claimed as a dependent, your standard deduction is lower, and you may owe tax on less income than an independent person would.
  • Even if you don't owe tax, filing a return may get you a refund if taxes were withheld from your paychecks or you may have access to for refundable credits.

Standard deduction thresholds for 2024

The standard deduction is the amount of income you can earn before owing any federal tax. For 2024, a single person under 65 doesn't owe tax on income below $14,600. A married couple filing jointly doesn't owe tax below $29,200. These numbers increase if you're 65 or older — an additional $1,850 for single filers, an additional $1,500 per spouse for joint filers.

These amounts change yearly, usually rising slightly to account for inflation. The IRS announces the new standard deduction in October for the following tax year. If you're claimed as a dependent on someone else's return — typically a parent — your standard deduction is capped at the greater of $1,300 or your earned income plus $450, up to the regular standard deduction limit. This means dependent children often owe tax on much smaller amounts than independent adults.

Self-employment income and the $400 rule

If you're self-employed — you run a business, freelance, drive for a rideshare service, or sell items online — you must file a federal tax return if your net self-employment income is $400 or more in a year. This applies even if your total income is below the standard deduction. The $400 threshold exists because self-employed people owe self-employment tax, which covers Social Security and Medicare contributions that employees normally split with their employer.

Self-employment tax is calculated on Schedule SE and added to your income tax return. Even if you owe no income tax because your income is low, you still owe self-employment tax on that $400 or more. If you're unsure whether your side income counts as self-employment, the general rule is: if you perform services or sell goods and have control over how and when you work, it's self-employment income.

Income that is never taxed federally

Certain types of income are excluded from federal taxation entirely. Gifts and inheritances are not taxable income to the person receiving them. Proceeds from a life insurance policy paid to a beneficiary are not taxed. may have access to scholarships used for tuition and books are not taxed. Certain disability payments, including workers' compensation and some disability benefits, are not taxed.

Child support received is not taxable. Certain state and local tax refunds are not taxable. Some interest income — such as interest on municipal bonds — is exempt from federal tax (though it may be subject to state tax). If you receive money that falls into one of these categories, you don't report it on your federal return, and it doesn't count toward your income threshold for owing tax.

When you should file even if you don't owe tax

Even if your income is below the standard deduction and you owe no federal tax, filing a return can put money back in your pocket. If your employer withheld federal income tax from your paychecks, filing a return gets you a refund of that withheld amount. If you worked multiple jobs or had other income sources, withholding may have been calculated incorrectly, and a return corrects it.

You may also be may have access to to refundable tax credits — credits that can result in a refund even if you owe no tax. The Earned Income Tax Credit (EITC) and the Additional Child Tax Credit are the most common. These credits are designed to benefit lower-income workers and families, and they can result in a refund larger than any tax you owed. If you think you might may have access to for these credits, filing a return is worth doing even if you're below the standard deduction.

Dependents and the lower standard deduction

If you're claimed as a dependent on someone else's tax return — usually a parent — your standard deduction is reduced. For 2024, a dependent can earn up to $1,300 in unearned income (interest, dividends, capital gains) before owing tax. For earned income (wages, self-employment), a dependent can earn up to $14,600 before owing tax, but only if that's their only income. If a dependent has both earned and unearned income, the calculation becomes more complex.

This matters most for teenagers with part-time jobs or young adults still claimed on a parent's return. A 16-year-old earning $15,000 from a summer job and part-time work during the school year would owe tax on the amount over their standard deduction, even though an independent 16-year-old earning the same amount might not. Parents should check whether claiming a dependent is still beneficial once that dependent starts earning significant income.

Investment income and capital gains

If you earn money from investments — dividends, interest, or capital gains from selling stocks or property — that income counts toward your standard deduction threshold. Long-term capital gains (from assets held over a year) are taxed at lower rates than ordinary income, but you still owe tax if your total income exceeds the standard deduction. Short-term capital gains (from assets held under a year) are taxed as ordinary income.

If you have investment income, you may receive a 1099 form from your broker or financial institution. Even if the amount is small, you should report it on your return. Some investment income — such as interest from a savings account — is reported on a 1099-INT. Dividend income is reported on a 1099-DIV. These forms help the IRS track your income, so reporting it correctly is important even if you ultimately owe no tax.

Frequently Asked Questions

Do I have to file a tax return if I made less than the standard deduction?

No, you don't have to file if your income is below the standard deduction for your filing status. However, you should file anyway if taxes were withheld from your paychecks, because you'll get a refund. You should also file if you think you may have access to for refundable credits like the Earned Income Tax Credit.

What counts as self-employment income?

Self-employment income includes money from running a business, freelancing, gig work (rideshare, delivery, task services), selling items online, or any other work where you're not an employee. If you earned $400 or more in net self-employment income in a year, you must file a return and pay self-employment tax, even if your total income is below the standard deduction.

If I'm a dependent, do I have to file a tax return?

It depends on your income. If you have only earned income (wages) and it's below the standard deduction for dependents, you don't have to file. If you have unearned income (interest, dividends) of $1,300 or more, or if you're self-employed with $400 or more in net income, you must file. Ask the person who claims you on their return if you're unsure.

Is Social Security income taxable?

Social Security benefits may be taxable depending on your total income and filing status. Up to 85% of your benefits can be subject to federal tax. You'll receive a SSA-1099 form showing your benefits, and you should report it on your return. The IRS has a worksheet to calculate how much, if any, is taxable.

What if I received a gift or inheritance — do I have to report it?

No. Gifts and inheritances are not taxable income to you, and you don't report them on your federal return. The person who gave the gift or the estate that distributed the inheritance may have tax obligations, but you do not. This applies whether the gift was money, property, or anything else of value.