Yes, people under 18 can owe federal taxes, and whether you have to pay taxes if you’re under 18 depends on how much you earn from a job, how much you receive from investments, and whether any of your income comes from self-employment. Age itself doesn’t exempt anyone. For the 2026 tax year, a dependent minor generally has to file a return once wages top $16,100, investment income tops $1,350, or self-employment earnings reach $400.1Internal Revenue Service. Rev. Proc. 2025-32
When a Minor Must File a Return
The IRS treats earned income (wages, tips, self-employment pay) differently from unearned income (interest, dividends, capital gains). A dependent under 18 must file a 2026 return if any one of these applies:
- Unearned income above $1,350
- Earned income above $16,100
- Gross income more than the larger of $1,350, or earned income (up to $15,650) plus $450
- Net self-employment earnings of $400 or more
The combined-income rule is the one families miss most often. Say a 17-year-old earns $4,000 from a summer job and picks up $500 in savings-account interest. Gross income is $4,500. The threshold is the greater of $1,350 or $4,450 ($4,000 + $450), so it lands at $4,450. Because $4,500 tops $4,450, the teen has to file.1Internal Revenue Service. Rev. Proc. 2025-32
How the Standard Deduction Shelters Job Income
The standard deduction sets how much a working minor can earn before owing any income tax. For 2026, a dependent’s standard deduction is the greater of $1,350 or earned income plus $450, capped at the regular single-filer amount of $16,100.1Internal Revenue Service. Rev. Proc. 2025-32
So the deduction grows with the paycheck. A teen making $8,000 gets a $8,450 deduction and owes zero income tax on those wages. A teen earning $20,000 gets the full $16,100 and pays income tax only on the last $3,900.2Internal Revenue Service. Topic No. 551, Standard Deduction
It’s not so generous with investment income. A dependent with no job earnings but $5,000 in dividends gets only the $1,350 floor and pays tax on the remaining $3,650.
The Kiddie Tax on Investment Income
The kiddie tax exists so families can’t shift stocks and bonds into a child’s name to get a lower rate. For 2026 it works in tiers:
- The first $1,350 of unearned income is tax-free
- The next $1,350 is taxed at the child’s own rate
- Anything above $2,700 is taxed at the parent’s marginal rate
That top tier is where the strategy falls apart. A parent in the 32% bracket who transfers $10,000 of dividend-paying investments to a child’s account saves nothing on the portion above $2,700, because it gets taxed as if the parent still held it.3Internal Revenue Service. Topic No. 553, Tax on a Childs Investment and Other Unearned Income
The kiddie tax reaches beyond age 17. It also applies to 18-year-olds who don’t earn more than half their own support and to full-time students ages 19 through 23 in the same situation.4Internal Revenue Service. Instructions for Form 8615 When unearned income tops $2,700, the child normally files their own return with Form 8615 attached. Parents whose child has only interest, dividend, and capital gain distribution income between $1,350 and $13,500 can instead report it on their own return using Form 8814, though that election sometimes raises the total tax and is worth running both ways.5Internal Revenue Service. Instructions for Form 8814
The $400 Rule for Self-Employment
Self-employment is where the numbers get low and the surprises get bigger. A minor who nets $400 or more from freelancing, gig work, online sales, or any small business has to file a return, even when total income is well under the standard deduction.6Internal Revenue Service. Self-Employed Individuals Tax Center
The reason is self-employment tax, which funds Social Security and Medicare. It runs 15.3%: 12.4% Social Security on net earnings up to $184,500 in 2026, plus 2.9% Medicare with no cap.7Social Security Administration. Contribution and Benefit Base
A teenager who nets $600 mowing lawns won’t owe any income tax, since the standard deduction covers it, but they’ll still owe roughly $85 in self-employment tax. That $400 threshold catches a lot of families flat-footed, and it applies at any age.
Working for a Parent’s Business
There’s a useful exception for family employment. A child under 18 who works for a parent’s sole proprietorship, or for a partnership in which both partners are the child’s parents, is exempt from Social Security and Medicare taxes on those wages.8Internal Revenue Service. Family Employees Income tax still applies once earnings pass the standard deduction, but skipping the 7.65% FICA piece adds up.
The exemption has hard limits. It doesn’t apply if the parent’s business is a corporation or S-corp, and it ends the day the child turns 18.9Office of the Law Revision Counsel. 26 U.S. Code 3121 – Definitions
Money That Doesn’t Count as Income
Plenty of what shows up in a minor’s account isn’t taxable. Cash gifts from relatives, birthday money, and allowances are not income to the child and never create a filing requirement. In 2026 someone can give up to $19,000 per recipient without gift tax consequences for the giver, and the recipient owes no income tax on the gift regardless of amount.10Internal Revenue Service. Whats New – Estate and Gift Tax
Personal Venmo and Cash App transfers between friends or family aren’t income either. Those platforms do send Form 1099-K for business transactions above $20,000 across more than 200 transactions, so a teen actively selling through a payment app could get one.11Internal Revenue Service. Understanding Your Form 1099-K A 1099-K doesn’t automatically mean tax is owed; it means the IRS has been told about the payments, and the income and any offsetting expenses belong on a return.
Reasons to File Even When You Don’t Have To
Filing can still pay off when no return is required. If an employer withheld federal income tax from paychecks, the only way to get that money back is to file and claim a refund.12Internal Revenue Service. Check if You Need to File a Tax Return For a teen who earned less than $16,100, the standard deduction wipes out the income tax bill entirely, so every withheld dollar should come back.
A filed return also documents earned income, which is what makes a custodial Roth IRA possible. For 2026 the contribution cap is $7,500 or total earned income for the year, whichever is smaller. A 16-year-old with $3,000 in summer wages can put up to $3,000 into a Roth, where it grows tax-free for roughly 50 years before retirement age. Contributions (not earnings) can come back out anytime without penalty, which softens the lock-up.
Deadlines and What Happens If a Minor Files Late
A minor’s return follows the same calendar as everyone else’s. For the 2025 tax year, returns are due April 15, 2026.13Internal Revenue Service. IRS Opens 2026 Filing Season
Missing the deadline with a balance owed triggers two penalties. Failure-to-file runs 5% of unpaid tax for each month or partial month late, capped at 25%.14Internal Revenue Service. Topic No. 653, IRS Notices and Bills, Penalties and Interest Charges Failure-to-pay adds another 0.5% per month on the unpaid balance, also capped at 25%.15Internal Revenue Service. Failure to Pay Penalty Returns more than 60 days late face a minimum penalty: $525 or 100% of the tax owed, whichever is less.
When no tax is owed, there’s no penalty for filing late. That’s worth checking before assuming the worst. When a child is too young to sign the return, a parent or guardian signs on their behalf and takes responsibility for getting it filed.16Internal Revenue Service. Return Signature