Quick Answer
You must file a tax return if your income exceeds specific thresholds: $15,000 for single filers under 65, $30,000 for married filing jointly under 65. However, you should file even if not required if you had taxes withheld or qualify for refundable credits like the Earned Income Tax Credit.
Best Answer
Robert Kim, CPA
Best for anyone unsure about their filing obligation, especially those with W-2 income
Do you have to file a tax return?
Whether you must file depends primarily on your income level, filing status, and age. According to IRS Publication 17, the filing requirement thresholds for 2026 tax returns are based on your gross income and filing status.
2026 filing requirement thresholds
Here are the income levels that trigger a filing requirement:
Example: Do you need to file?
Let's say you're 28, single, and earned $12,000 from your part-time job in 2026. Since $12,000 is below the $15,000 threshold, you're not required to file. However, if your employer withheld federal taxes from your paychecks, you should file anyway to get that money back as a refund.
Another example: You're married filing jointly, both under 65, with combined income of $28,000. Since this is below the $30,000 threshold, you're not required to file — but you might want to if you had withholding or qualify for credits.
When you should file even if not required
Even if your income falls below these thresholds, you should file a return if:
Special situations that require filing
You must file regardless of income if:
What you should do
Check your total 2026 income against the thresholds above. If you're close to the threshold or had any tax withheld, it's usually worth filing. The worst case is you get money back; the best case is you avoid penalties for not filing when required.
Use our form explainer tool to understand your tax documents and determine if filing makes sense for your situation.
Key takeaway: File if your income exceeds the thresholds for your status, but also consider filing if you had withholding or qualify for refundable credits — even when not required.
*Sources: IRS Publication 17, IRS Revenue Procedure 2025-14*
Key Takeaway: File if your income exceeds the thresholds for your status, but also consider filing if you had withholding or qualify for refundable credits — even when not required.
2026 filing requirement income thresholds by filing status and age
| Filing Status | Under 65 | 65 or Older |
|---|---|---|
| Single | $15,000 | $16,700 |
| Married Filing Jointly | $30,000 | $31,700 (one spouse) / $33,400 (both) |
| Married Filing Separately | $5 | $5 |
| Head of Household | $22,500 | $24,200 |
| Qualifying Surviving Spouse | $30,000 | $31,700 |
More Perspectives
Diana Flores, EA
Best for people filing their first tax return or students with part-time income
Filing your first tax return — what you need to know
As a first-time filer, the filing requirement rules might seem confusing, but they're straightforward once you understand the basics.
The simple test: Look at your income
For 2026 tax returns, if you're single and under 65, you need to file if you made more than $15,000. This includes income from all sources: jobs, freelance work, interest, dividends — everything.
But here's what many first-time filers miss: you should probably file even if you don't have to. Why? Because you'll likely get money back.
Why file when you don't have to?
Most first-time filers work part-time jobs where taxes are automatically taken from their paychecks. Let's say you earned $8,000 from a summer job and your employer withheld $400 in federal taxes. Since you're well below the $15,000 filing threshold, you don't have to file — but if you don't file, you forfeit that $400.
When you file, you'll get most or all of that $400 back as a refund because your actual tax obligation on $8,000 of income is likely zero after the standard deduction.
Common first-timer situations
What documents do you need?
For most first-time filers, you'll need:
The bottom line for new filers
When in doubt, file. The IRS doesn't penalize you for filing when you don't have to, and you might be leaving money on the table if you don't. Most first-time filers get refunds, not bills.
Key takeaway: First-time filers should almost always file, even with low income, because you'll typically get back more in withheld taxes than you owe.
Key Takeaway: First-time filers should almost always file, even with low income, because you'll typically get back more in withheld taxes than you owe.
Robert Kim, CPA
Best for employees with straightforward W-2 income and standard deduction
Filing requirements for W-2 employees
If you're a regular employee who receives a W-2, determining whether to file is usually straightforward. Your decision comes down to income thresholds and whether you want your withholding back.
The income test for W-2 employees
For 2026, single employees under 65 must file if they earned more than $15,000. This threshold is based on your gross income — the amount in Box 1 of your W-2 before any deductions.
Example: Your W-2 shows $14,500 in Box 1 (wages). You're not required to file, but Box 2 shows $800 in federal tax withholding. By filing, you'll get most or all of that $800 back since your tax liability on $14,500 is likely zero after the $15,000 standard deduction.
Multiple W-2s? Add them up
If you had multiple jobs in 2026, add the income from all W-2s to determine if you exceed the threshold. Two part-time jobs paying $8,000 each means $16,000 total — above the $15,000 threshold, so you must file.
When W-2 employees should always file
Even if your income is below the threshold:
The withholding factor
Most W-2 employees have taxes withheld automatically. If you're below the filing threshold but had withholding, you're essentially giving the government an interest-free loan if you don't file to get it back.
For simple W-2 situations, filing is usually quick and results in a refund. The standard tax software can handle most W-2-only returns in under an hour.
Key takeaway: W-2 employees should file if they exceed income thresholds or had any federal taxes withheld, regardless of total income.
Key Takeaway: W-2 employees should file if they exceed income thresholds or had any federal taxes withheld, regardless of total income.
Sources
- IRS Publication 17 — Your Federal Income Tax (For Individuals)
- IRS Revenue Procedure 2025-14 — 2026 Tax Year Inflation Adjustments
Reviewed by Robert Kim, CPA on February 28, 2026
This content is for educational purposes only and is not a substitute for professional tax advice. Consult a qualified tax professional for advice specific to your situation.