Most working people pay federal income tax, but not everyone

Federal income tax is paid by people whose income exceeds a certain threshold set by the IRS each year. That threshold — called the standard deduction — depends on your age, filing status, and whether you can be claimed as a dependent. If your income is below that threshold, you owe no federal income tax. If it's above, you do.

The people who pay are not just those with jobs. Self-employed people, investors, retirees drawing from retirement accounts, and people receiving certain government benefits all pay federal income tax if their income crosses the line. The IRS does not care where the money comes from — only how much you have.

The people who don't pay include those whose income stays below the standard deduction, people whose only income is from sources the tax code excludes (like certain disability payments), and people whose income is offset entirely by credits they're may have access to to claim.

Key Takeaways

  • You owe federal income tax only if your income exceeds the standard deduction for your filing status and age, which changes each year.
  • The standard deduction in 2024 ranges from $14,600 for a single person under 65 to $29,200 for a married couple filing jointly, both under 65.
  • Income from wages, self-employment, investments, retirement account withdrawals, and some government benefits all count toward the threshold.
  • Even if you owe no tax, you may still need to file a return to claim refundable credits like the Earned Income Tax Credit.

How the standard deduction determines who pays

The standard deduction is a dollar amount you subtract from your total income before calculating tax. For 2024, a single person under 65 has a standard deduction of $14,600. A married couple filing jointly, both under 65, has $29,200. These amounts increase slightly each year to account for inflation.

If you earn $14,500 as a single person, your income is below the standard deduction, so you owe no federal income tax. If you earn $15,000, you owe tax on $400 — the amount above the threshold. The standard deduction is the same whether you earn money from a job, run a business, or live off investment income.

Age matters. If you're 65 or older, your standard deduction is higher. A single person 65 or older gets $17,550 in 2024. A married couple where at least one spouse is 65 or older gets $30,750. This extra amount recognizes that older people often have lower incomes and higher medical costs.

Types of income that trigger federal tax

Wages from a job are the most common source of taxable income. Your employer withholds federal income tax from each paycheck based on what you tell them on your W-4 form. But wages are not the only kind.

Self-employment income — money from running your own business or freelancing — is taxable once it exceeds $400 in a year, even if it's below the standard deduction. You owe both income tax and self-employment tax on this money.

Investment income includes interest from savings accounts and bonds, dividends from stocks, and capital gains when you sell an investment for more than you paid. Some investment income gets special tax treatment — long-term capital gains are taxed at lower rates than ordinary income — but it still counts toward your total.

Retirement account withdrawals are taxable. When you withdraw money from a traditional IRA or 401(k), that withdrawal counts as income for the year you take it. Roth IRA withdrawals of contributions are not taxable, but withdrawals of earnings are, with some exceptions.

Certain government benefits are taxable. Social Security benefits become taxable if your total income exceeds a threshold that depends on your filing status. Unemployment benefits are fully taxable. SNAP (food stamps) and housing information are not taxable.

Who does not owe federal income tax

Anyone whose income stays below the standard deduction for their situation owes no federal income tax. A teenager earning $8,000 from a summer job, a retiree with $12,000 in Social Security and no other income, and a person receiving only disability payments under certain programs all fall below the threshold and owe nothing.

Dependents have a different rule. If you can be claimed as a dependent on someone else's return, your standard deduction is lower — generally the greater of $1,300 or your earned income plus $450, up to the regular standard deduction. A dependent teenager earning $3,000 from a job would owe no tax because $3,000 is below their dependent standard deduction.

Some income sources are never taxable. Gifts and inheritances are not subject to federal income tax. Workers' compensation for injury is not taxable. Certain disability payments, including Supplemental Security Income (SSI), are not taxable. Child support received is not taxable. These exclusions mean you can receive money from these sources without owing tax, even if your other income is high.

What happens if you earn below the threshold but still file

You may owe no federal income tax but still benefit from filing a return. The Earned Income Tax Credit (EITC) is a refundable credit for people with low to moderate income who work. If you earn between roughly $16,000 and $63,000 depending on your filing status and number of children, you may be may have access to to this credit. Even if you owe no tax, filing a return lets you claim it and receive a refund.

The Child Tax Credit is another reason to file even if you owe no tax. Part of this credit is refundable, meaning you can receive money back even if you owe nothing. If you have dependent children and your income is below the threshold, filing may put money in your pocket.

If your employer withheld federal income tax from your paychecks during the year, you need to file to get that money back. Even if you owed no tax, the withholding is yours to reclaim.

How filing status affects who pays

Your filing status — single, married filing jointly, married filing separately, head of household, or may have access to widow(er) — determines your standard deduction and therefore whether you owe tax.

Married couples filing jointly have the highest standard deduction. In 2024, it's $29,200 if both spouses are under 65. This means a couple can earn more combined income before owing tax than two single people earning the same amounts separately. A married couple filing separately each get $14,600 in 2024, the same as a single person, which is why filing jointly is usually better.

Head of household status applies if you're unmarried and pay more than half the costs of maintaining a home for yourself and a may have access to dependent. Your standard deduction is higher than single but lower than married filing jointly — $21,900 in 2024 if you're under 65.

State and local income tax is separate

Federal income tax is only one layer. Forty-one states also impose income tax on residents. Some cities and counties do as well. These taxes have their own thresholds, rates, and rules. You can owe federal income tax but no state tax, or vice versa. You can owe both. The federal standard deduction does not explore to state or local taxes — each jurisdiction sets its own.

Some states have no income tax at all. Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, and Wyoming do not tax income. New Hampshire and Tennessee tax only investment income, not wages. If you live in one of these states, you may owe no state income tax even if you owe federal tax.

Frequently Asked Questions

Do I have to file a tax return if I earn below the standard deduction?

No, you don't owe federal income tax if your income is below the standard deduction. However, you may want to file anyway to claim the Earned Income Tax Credit, Child Tax Credit, or to recover federal income tax your employer withheld from your paychecks.

Does Social Security count as income for federal tax purposes?

Social Security benefits are taxable if your total income exceeds certain thresholds. For a single person, if your income plus half your Social Security benefits exceeds $25,000, some of your benefits become taxable. For married couples filing jointly, the threshold is $32,000. The calculation is complex, so many people with Social Security consult a tax professional.

What if I'm self-employed and earn less than the standard deduction?

Self-employment income is taxed differently. You owe self-employment tax (Social Security and Medicare tax) on net self-employment income of $400 or more, even if your total income is below the standard deduction. You would owe no federal income tax, but you still need to file to report the self-employment tax.

Can a dependent claim the standard deduction?

Yes, but it's smaller. If you can be claimed as a dependent, your standard deduction is generally the greater of $1,300 or your earned income plus $450, capped at the regular standard deduction for your age. A dependent earning $5,000 from a job would have a standard deduction of $5,450, so they'd owe no tax.

Do I owe federal income tax on gifts or inheritances?

No. Gifts and inheritances are not subject to federal income tax. However, if an inheritance includes investments or retirement accounts, withdrawals from those accounts later will be taxable. The inheritance itself is not.