You must file taxes if you earn enough income, regardless of age

The IRS requires you to file a tax return when your income crosses a threshold set each year. That threshold depends on your age, filing status, and type of income. A dependent teenager with $1,300 in wages must file. A 67-year-old with $19,500 in Social Security and part-time work might not. The rule is not "file when you turn 18" — it is "file when your income reaches the limit for your situation."

You do not need to wait for a W-2 or 1099 to arrive to know whether you must file. If you earned money during the year, you can calculate now whether you crossed the threshold. The IRS publishes the income limits on its website each January, and they change slightly year to year because they adjust for inflation.

Key Takeaways

  • Filing requirements are based on your total income, not your age — a 16-year-old with $1,300 in wages must file, but a 70-year-old with only Social Security income might not.
  • The income threshold varies by filing status (single, married, head of household) and age, and the IRS updates these amounts each January for the tax year ahead.
  • You should file even if no tax is owed if you had income tax withheld from your paychecks, because you may receive a refund.
  • Self-employed people must file if their net earnings are $400 or more, even if their total income is below the standard threshold.
  • You can file as soon as you have all your income documents — typically January through early February — rather than waiting until April.

Income thresholds for single filers and dependents

If you are single and under 65, you must file if your gross income was $13,850 or more in 2023. If you are 65 or older, the threshold is higher — $15,550 — because the IRS allows an additional standard deduction. These numbers change each year, so check the current year's threshold before deciding you do not need to file.

If you are a dependent claimed on someone else's return, the rule is stricter. You must file if you had unearned income (like interest or dividends) of $1,150 or more, or earned income (like wages) of $13,850 or more. Many teenagers fall into this category: a high school student working part-time at $15 per hour for 20 hours a week will cross the $13,850 threshold by mid-year and must file.

The dependent threshold for unearned income is much lower because the IRS taxes investment income more heavily. A teenager with a savings account earning $1,200 in interest must file even if they have no job.

Married filers and head of household status

If you are married and file jointly, you must file if your combined gross income was $27,700 or more in 2023. If one spouse is 65 or older, the threshold rises to $28,500. If both are 65 or older, it rises to $29,300. These higher thresholds reflect the fact that two people's standard deduction combined is larger than one person's.

If you are married but file separately, the threshold drops to $13,850 for each spouse, the same as a single filer. Filing separately is rarely to your advantage, but if you do, each spouse is held to the single-filer threshold.

Head of household filers — usually single parents supporting a child or dependent — must file if their gross income was $20,800 or more in 2023. If you are 65 or older and head of household, the threshold is $22,050.

Self-employment income and the $400 rule

If you are self-employed, the filing rule is different. You must file if your net self-employment income is $400 or more, even if your total income is below the standard threshold. This applies whether you run a business full-time or have side income from freelance work, gig platforms, or selling items online.

Net self-employment income means your revenue minus your business expenses. If you earned $600 from freelance writing but spent $250 on software and supplies, your net income is $350 — below the $400 threshold, so you would not have to file based on self-employment alone. But if you also had $100 in wages from another job, your total income might push you over the standard threshold anyway.

The $400 rule exists because self-employed people owe self-employment tax (Social Security and Medicare tax) on top of income tax. The IRS wants to collect that tax even when your overall income is low.

When to file if you owe a refund

You should file even if your income is below the threshold if you had income tax withheld from your paychecks. Withholding is the tax your employer deducts from each paycheck. If you worked only part of the year, or earned very little, your employer may have withheld more tax than you actually owe. Filing a return is how you get that money back.

This is common for teenagers working summer jobs. A 16-year-old might earn $4,000 over three months, below the $13,850 threshold, so technically they do not have to file. But if their employer withheld $400 in federal income tax, filing a return will return that $400 to them. The same applies to adults who changed jobs mid-year or took unpaid leave.

You also should file if you are due a refundable tax credit, such as the Earned Income Tax Credit (EITC) or the Child Tax Credit. These credits can result in a refund even if you owe no tax. You must file to receive them.

When you can start filing and what documents you need

You can file as soon as you have your income documents in hand. The IRS opens the filing season in early January each year. Employers must send W-2 forms by January 31. Businesses and platforms that paid you must send 1099 forms by the same date. You do not have to wait until April 15 — in fact, filing early can speed up your refund if you are owed one.

Gather these documents before you file: your W-2 from each employer, any 1099 forms (1099-NEC for self-employment, 1099-INT for interest, 1099-DIV for dividends), records of business expenses if self-employed, and documentation of any deductions you plan to claim. If you are filing jointly, you will need both spouses' Social Security numbers and income information.

If you are missing a document by mid-February, contact the employer or business directly. The IRS has procedures for filing without a missing W-2, but it is simpler to wait a few days for the document to arrive than to file an amended return later.

Special situations: students, dependents, and non-citizens

A full-time student has no special exemption from filing requirements. If you are a dependent claimed on your parents' return and you earned $13,850 or more in wages, you must file your own return. Your parents will still claim you as a dependent on their return — that does not change. You file separately because you have income to report.

Non-citizens and visa holders must also file if their income exceeds the threshold. The rules are the same as for citizens, with one exception: if you are a non-resident alien, your filing threshold may be different, and you may need to file even with lower income. Consult the IRS guidance for non-residents or a tax professional if you are unsure of your status.

If you are a U.S. citizen living abroad, you must file if your worldwide income exceeds the threshold, even if you pay taxes to another country. You may be able to exclude some foreign earned income from U.S. tax, but you still file the return to claim that exclusion.

Frequently Asked Questions

Do I have to file if I am claimed as a dependent but earned money?

Yes, if your earned income was $13,850 or more in 2023, or your unearned income was $1,150 or more. Being a dependent does not exempt you from filing — it just means someone else claims you on their return. You file your own return to report your income.

What if I worked only part of the year?

The threshold is based on your total income for the entire year, not monthly or weekly income. If you worked January through June and earned $14,000, you must file even though you did not work the full year. If you earned $12,000 total but had $1,500 withheld in taxes, you should file to get that refund.

Do I need to file if I only have Social Security income?

Probably not, unless you also have other income. If Social Security is your only income and it is below the threshold for your age and filing status, you do not have to file. However, if you have other income (wages, interest, self-employment), add it to your Social Security to see if you cross the threshold.

Can I file before I receive my W-2?

You can file as soon as you have all your income documents, but you cannot file before your employer sends your W-2. Employers must send W-2s by January 31. If you have not received yours by early February, contact your employer or check your online account if the employer offers electronic delivery.

What happens if I do not file when I should?

The IRS may assess a failure-to-file penalty if you owe tax and do not file by the important date. If you are owed a refund, there is no penalty, but you lose the refund if you do not file within three years. If you realize you should have filed in a previous year, you can file an amended return at any time.