Do You Have to File Taxes? How to Know If You’re Required

Javier works part-time at a restaurant and is confused. He earned little, had some withheld from each paycheck, and doesn’t know if “the taxes thing” applies to him. One friend tells him not to file “because you earn very little.” Another tells him to file “because you’re owed a refund.” Both sound sure of themselves. Both can’t be right.

And here’s the curious part: neither is entirely wrong. There are people who aren’t required to file and still come out ahead by filing. The real question isn’t just “do I have to?” but also “is it worth it for me?” Today we answer both.

The general rule: the standard deduction as threshold

For most people, the filing obligation is decided with a single number: your standard deduction. If your gross income (everything you earned, before subtracting anything) exceeds your standard deduction, you normally have to file a federal return.

With the 2026 amounts, that means:

• Single: if you earned more than $16,100
• Married filing jointly: if you earned more than $32,200
• Head of household: if you earned more than $24,150
• Married filing separately: more than $16,100

For people 65 or older or blind people there are additional standard deduction amounts, which moves the threshold. And if you’re someone’s dependent (for example, a child claimed by their parents), the threshold calculation has its own rules that shrink the margin.

The logic is simple: if your income doesn’t exceed the standard deduction, your federal tax is probably zero, so the IRS doesn’t demand the paperwork. But notice the word “probably”: there are important exceptions.

The big exception: self-employment ($400)

This is the most common trap. If you work for yourself —app deliveries, freelance, contractor, your own business— you must file when your net earnings reach $400 or more in the year. Four hundred dollars. It doesn’t matter if your total income is far below the standard deduction thresholds: the self-employment tax kicks in at $400.

This means someone who earned $8,000 in app deliveries does have to file, even though an employee who earned $8,000 in wages would not be required. Two people, same income, different obligations. The difference is the type of income.

Other triggers that force you to file

Besides the general rule and the $400 rule, there are situations that activate the obligation even if your income is low:

• You owe special taxes: for example, the self-employment tax mentioned, or the additional Medicare tax if it applies.
• You received distributions from retirement accounts with special rules, or had unreported tip income to your employer.
• You sold your home with gains that require filing, or you have investment income that activates reporting rules for dependent children (the “kiddie tax”, where a dependent child’s investment income can be taxed at the parents’ rate).
• You received credits or advance payments that must be reconciled, like the health insurance premium tax credit.

You don’t have to memorize this list: if any of these situations sounds familiar, that’s the moment to file or to ask a professional.

When you’re not required but it’s worth filing

Here we arrive at the second question, the one Javier’s friend was intuiting. There are cases where you don’t have to file… but it’s worth doing it, because the IRS owes you money:

1. Tax was withheld from your wages. If you’re an employee and federal tax was withheld from each paycheck, that money is yours until the return proves otherwise. Without a return, there’s no refund: the money stays with the IRS.
2. You qualify for refundable credits. The EITC (up to $8,231 with three children in 2026), the additional child tax credit (up to $1,700), and the American Opportunity education credit are refundable: they can return money to you even if you owe no tax. But only if you file. Nobody sends them to you automatically.
3. You paid estimated tax during the year. If you made estimated payments and ended up owing nothing, that money only comes back with a return.
4. You want to claim a refund from past years. You have three years to claim it; after that deadline, the money is lost even if you’re entirely right.

The rule of thumb: if you worked as an employee and had something withheld, file. The cost of filing (time or free software) is almost always less than the refund waiting for you.

The case of young people with part-time jobs

The part-time student is the classic case of confusion. The rule is the same as for everyone: if their gross income exceeds their standard deduction, they must file. But since they’re a dependent of their parents, their threshold is calculated differently and in practice it’s lower than an independent adult’s.

The important part for parents: if you claim your child as a dependent, their return (if they must file one) does not prevent you from claiming them. They are two separate, compatible returns. And if the child had federal tax withheld from their part-time paychecks, filing returns that money to them even if they’re not required.

A common mistake in families: the parent includes the child’s income on their own return “to simplify”. It doesn’t work that way: each person files their own.

What to do today, in order

1. Add up your gross income for the year: if it exceeds your standard deduction for your filing status, you must file.
2. If you’re self-employed, check net earnings: $400 or more forces you to file.
3. Even if you’re not required, check whether tax was withheld or you qualify for refundable credits: filing could return money to you.
4. If you’ve never filed, start with our first-time guide: it walks you step by step.

This content is informational and is not tax advice. For your particular case, consult the official sources or an authorized professional.

Official sources

• IRS – Who should file
• IRS – Publication 501