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- How old do you have to be to file taxes?
- 2025 filing thresholds for people who are not dependents
- 2025 filing rules for a dependent child
- A child’s earnings are the child’s income
- Self-employment can require an early return
- Other situations that can require filing
- The kiddie tax is not a filing threshold
- When voluntary filing makes sense
- Examples
- How to check the requirement
- Sources
Key Facts
- Federal level: There is no minimum age for filing or paying federal income tax.
- Federal level: Filing depends primarily on income type, amount, filing status, dependency status, and special tax situations.
- Federal level: For 2025, a single dependent under 65 generally must file if unearned income exceeds $1,350 or earned income exceeds $15,750.
- Federal level: Net self-employment earnings of at least $400 generally trigger a filing requirement even below the ordinary income threshold.
- Federal level: A child’s wages belong on the child’s return, even if a parent receives or controls the money.
- Federal level: Filing voluntarily can recover federal withholding or claim refundable credits even when filing is not required.
How old do you have to be to file taxes?
Federal law sets no starting age for filing a tax return. A child, teenager, working adult, or retiree may have to file when the applicable income and special-situation rules are met.
Age mainly changes certain thresholds after age 65 and helps determine special rules for a child’s investment income. It does not create a blanket exemption for minors.
2025 filing thresholds for people who are not dependents
For a single taxpayer under 65, a 2025 return is generally required at $15,750 of gross income. The general thresholds are $23,625 for head of household, $31,500 for married filing jointly when both spouses are under 65, and $31,500 for a qualifying surviving spouse.
Married filing separately has a special $5 gross-income threshold. Taxpayers age 65 or older generally receive higher thresholds, but dependency and special filing rules still must be checked.
Gross income generally includes taxable money, property, goods, and services before the deductions used to calculate taxable income. A filing threshold is therefore not the same as taxable income or take-home pay.
2025 filing rules for a dependent child
A person who can be claimed as someone else’s dependent uses the dependent filing table even if nobody actually claims them. The analysis connects to the federal rules for when someone may claim a dependent.
A single dependent under 65 generally must file for 2025 if unearned income exceeds $1,350, earned income exceeds $15,750, or gross income exceeds the larger of $1,350 or earned income up to $15,300 plus $450. Different figures apply to a married dependent, a dependent age 65 or older, or a blind dependent.
Earned income includes wages, salaries, tips, professional fees, and pay for work actually performed. For filing-threshold purposes, certain taxable scholarships and fellowships also count as earned income.
Unearned income includes taxable interest, ordinary dividends, capital-gain distributions, unemployment compensation, taxable Social Security benefits, pensions, annuities, and certain trust distributions. Mixed earned and unearned income can trigger the gross-income test even when neither category alone crosses its standalone threshold.
A child’s earnings are the child’s income
Compensation a child earns for services is included in the child’s gross income, not the parent’s. That remains true when local law gives the parent rights over the earnings or the parent receives the payment.
If a minor must file but cannot prepare or sign the return, a parent, guardian, or other legally responsible person files for the child. The responsible adult can sign the child’s name followed by their own signature and capacity as parent or guardian.
Self-employment can require an early return
A person generally must file when net earnings from self-employment are at least $400. This rule commonly affects teenagers earning money from tutoring, lawn care, content creation, online sales conducted as a business, or other independent work.
Net earnings are not simply cash received; ordinary business expenses affect the calculation. When the threshold is met, Schedule C and Schedule SE may be required, and self-employment tax can apply even if no regular income tax is due.
Other situations that can require filing
A return can be required below the ordinary gross-income threshold for taxes on retirement accounts, household employment taxes, advance premium tax credit reconciliation, recapture taxes, or other items listed in Publication 501. A taxpayer who received Marketplace advance credits should review Form 1095-A and Form 8962 requirements.
Special rules also apply to church employee income, tip income not reported to an employer, and distributions from certain tax-favored accounts. The IRS filing questionnaire considers these triggers rather than asking only age and wages.
The kiddie tax is not a filing threshold
Form 8615 can apply when a child has more than $2,700 of unearned income in 2025 and meets the age, student, support, and parental-status conditions. It calculates tax using the parent’s rate when that rate is higher.
The covered group generally includes children under 18, age-18 children whose earned income does not exceed half their support, and full-time students ages 19 through 23 whose earned income does not exceed half their support. The rules can apply whether or not the child is claimed as a dependent.
A parent may sometimes elect on Form 8814 to report a child’s interest, ordinary dividends, and capital-gain distributions. The election has strict conditions and can produce a different tax result, so it is not a universal substitute for the child’s return.
When voluntary filing makes sense
A person below the mandatory threshold may file to recover federal income tax withheld from a paycheck or backup withholding. Filing can also be necessary to receive a refundable credit for which the taxpayer qualifies.
A refund claim requires a return within the applicable limitation period. Keeping Forms W-2 and 1099, account statements, business records, and proof of estimated payments makes the decision and preparation easier.
Examples
A 16-year-old dependent with $4,000 of wages and no other income generally falls below the 2025 earned-income and gross-income thresholds. If federal tax was withheld, filing may still recover it.
A 14-year-old dependent with $1,600 of taxable interest generally must file because unearned income exceeds $1,350. Form 8615 is not triggered solely by that amount because its 2025 unearned-income threshold is higher.
A 17-year-old with $900 of net self-employment income generally must file despite being below the ordinary dependent earned-income threshold. The $400 self-employment rule is an independent trigger.
How to check the requirement
Determine filing status and whether another taxpayer can claim the person as a dependent. Then total earned income, unearned income, gross income, net self-employment earnings, withholding, estimated payments, and any special taxes or advance credits.
Use the Publication 501 table for the specific tax year because thresholds are adjusted and can change. The filing question should be revisited whenever a new Form W-2, 1099, brokerage statement, or Marketplace form arrives.
