Do I Have to File a Tax Return?
Check the federal gross-income test for your filing status, the separate test for dependents, and the list of situations that require a return at any income. Each test shows pass or fail with its citation.
Tax year 2025 follows Pub. 501 (2025); tax year 2026 derives the thresholds from the 2026 standard deduction and is a planning estimate. Last verified 2026-09-20.
How the filing test works
Three separate rules can require a federal return, and any one is enough. IRC §6012(a)(1) sets the gross-income rule, and Pub. 501 turns it into three tables.
- Table 1: your gross income reached the threshold for your filing status and age.
- Table 2: if someone can claim you as a dependent, your earned, unearned, or total income passed its own limit.
- Table 3: a special situation requires a return at any income, such as $400 of self-employment earnings.
Common Questions
Do I have to file a tax return?
Usually yes if your gross income for the year was at least your filing threshold. For 2025 that threshold is $15,750 for a single filer under 65, $23,625 for head of household, and $31,500 for married filing jointly, and it rises when you are 65 or older. IRC §6012(a)(1) sets the rule and Pub. 501 Table 1 prints the amounts.
What counts as gross income?
All income you receive in money, goods, property, and services that is not exempt from tax, including income from outside the United States and the sale of your main home even when you can exclude part of it. It is income before any deduction, so do not enter your taxable income. Gains count, and losses do not reduce it.
Do Social Security benefits count?
Only when the benefits are taxable in part. They stay out of gross income unless you file separately and lived with your spouse at any time in the year, or half your benefits plus your other income and tax-exempt interest exceeds $25,000 ($32,000 on a joint return). Our Social Security taxability calculator finds the taxable part.
Why is the threshold the same as the standard deduction?
IRC §6012(a)(1)(A) excuses a return when gross income is below the basic standard deduction for your filing status. For a filer 65 or older it adds one age amount; blindness does not raise the filing threshold, only the standard deduction.
What if someone can claim me as a dependent?
Pub. 501 Table 2 applies instead. You must file if your unearned income, your earned income, or your gross income exceeds its own limit. Any one is enough. The unearned limit starts at $1,350 and the gross limit rises with your earned income, so a dependent with a little of both kinds of income can owe a return even when neither kind alone is high.
I owe tax on something small. Do I have to file even below the threshold?
Often yes. Table 3 of Pub. 501 lists situations that require a return at any income, such as self-employment earnings of $400 or more, alternative minimum tax, an additional tax on an IRA, health savings account distributions, and advance premium tax credit payments. The calculator asks about each.
What if I am not required to file?
You may still want to. A return is how you claim a refund of tax withheld from your pay, estimated tax payments, and refundable credits such as the earned income credit, the additional child tax credit, the refundable American opportunity credit, and the premium tax credit.
What is the $5 rule for married filers?
A married person who files separately must file with $5 of gross income, at any age. So must a married person who did not live with the spouse at the end of the year and is not filing as head of household. Pub. 501 Table 1 states it.
What happens if I do not file when I should?
You may owe a failure-to-file penalty, and willful failure to file can bring criminal prosecution. If you did not file a required return, our IRS notices library explains the letters the IRS sends for an unfiled return.
Is this calculator free?
Yes. It is free, with no signup, and it shows every test with its citation.