Your employer files the W-2 with the Social Security Administration, so you don’t file the form itself. What you decide is whether the wages on that W-2 mean you have to file a federal tax return. For tax year 2026, a single filer under 65 must file once gross income reaches $16,100, and the number shifts with filing status and age. Below the threshold you’re generally off the hook, but filing anyway is often worth it because withheld taxes and refundable credits only come back if you claim them.
2026 Filing Thresholds by Status
Federal law ties the filing requirement to gross income and filing status. If your gross income equals or exceeds the standard deduction for your status, you must file.1Office of the Law Revision Counsel. 26 USC 6012 – Persons Required to Make Returns of Income For 2026, the thresholds for filers under 65 are:
- Single or married filing separately: $16,100
- Married filing jointly: $32,200
- Head of household: $24,150
These figures reflect inflation adjustments the IRS published for 2026, including changes from the One, Big, Beautiful Bill Act.2Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026, Including Amendments From the One, Big, Beautiful Bill Married filing separately is the outlier. If you didn’t live with your spouse at the end of the year, the practical threshold drops to $5.3Internal Revenue Service. Publication 501 – Dependents, Standard Deduction, and Filing Information
Gross income means nearly everything you received that isn’t specifically exempt from tax. W-2 wages are the obvious piece, but freelance earnings, interest, dividends, capital gains, rental income, and retirement distributions all count. If the combined total from every source hits the threshold, you file.
If You’re 65 or Older
Taxpayers 65 and older get an additional standard deduction, which raises the filing threshold. On the 2025 chart (the most recent full one the IRS has published), a single filer 65 or older didn’t have to file until gross income reached $17,750, compared with $15,750 under 65.3Internal Revenue Service. Publication 501 – Dependents, Standard Deduction, and Filing Information The 2026 numbers follow the same structure with inflation adjustments.
The One, Big, Beautiful Bill Act also added a separate enhanced deduction of $6,000 for individuals 65 and older, effective for tax years 2025 through 2028. Two qualifying spouses on a joint return get a combined $12,000. This stacks on the existing age-related additional standard deduction.4Internal Revenue Service. Check Your Eligibility for the New Enhanced Deduction for Seniors
The enhanced deduction phases out for modified adjusted gross income above $75,000 (or $150,000 on a joint return).4Internal Revenue Service. Check Your Eligibility for the New Enhanced Deduction for Seniors Many retirees with pension income, Social Security, and investment earnings will lose part or all of the extra benefit. For seniors with more modest incomes, though, the combined amounts mean you may not owe anything, and may not need to file, at income levels that would trigger a required return for a younger filer.
If Someone Else Claims You as a Dependent
Dependents follow a separate set of thresholds that depend on the type of income received. The IRS splits it into earned income (wages, salaries, tips) and unearned income (interest, dividends, capital gains).
For a single dependent under 65 on 2025 returns, the thresholds were:
- Unearned income only: must file if it exceeds $1,350
- Earned income only: must file if it exceeds $15,750
- Both types: must file if gross income exceeds the larger of $1,350, or earned income (up to $15,300) plus $450
These are the IRS filing requirements for 2025.5Internal Revenue Service. Check if You Need to File a Tax Return The 2026 amounts will follow the same formula with slight inflation adjustments, and the IRS publishes exact numbers in Publication 501 and its online filing tool each fall.
For teenagers and college students with part-time jobs, the earned-income threshold roughly tracks the standard deduction. A W-2 showing wages below that amount, with no other income, usually means no return is required. Still worth filing if your employer withheld any federal tax, because that money only comes back if you claim it.
Reasons to File Even When You Don’t Have To
This is where money gets left behind. If your income is below the threshold, the IRS doesn’t require a return. But filing is the only way to recover taxes your employer already withheld. That money sits with the Treasury until you claim it, and after three years you lose the right to a refund.
Filing also unlocks refundable credits that pay out even when your tax bill is zero. The IRS points specifically to:6Internal Revenue Service. Refundable Tax Credits
- The Earned Income Tax Credit, which can be worth thousands for lower-income workers, particularly those with children
- The Child Tax Credit, which is partially refundable
- The American Opportunity Tax Credit, up to 40% refundable for qualifying education expenses
- The Premium Tax Credit, which reconciles health insurance subsidies received through the marketplace
Students, part-time workers, and people who only worked a few months during the year are the most likely to skip filing and miss these refunds. A simple return can yield hundreds or thousands back.
Situations That Require Filing Regardless of Income
Some tax obligations exist no matter how little you earned. The one that catches the most people: if your net self-employment earnings reach $400 or more, you must file to pay Social Security and Medicare taxes on that income.7Internal Revenue Service. Self-Employed Individuals Tax Center That applies even if your total income sits well below the standard deduction. Self-employment tax runs about 15.3% of net earnings, so skipping the return builds a growing balance with the IRS.
Other triggers include:
- Household employment taxes if you paid a nanny, housekeeper, or other household worker more than the annual threshold
- Alternative minimum tax, which certain deductions and income types can trigger
- Any distribution from a Health Savings Account or Medicare Advantage MSA, which requires a return to verify the funds went to qualified medical expenses
- Advance Premium Tax Credit payments through the marketplace, which have to be reconciled on your return
Each of these operates independently of the income threshold. The standard deduction may wipe out your income tax, but the reporting requirement still applies.
What to Do If Your W-2 Is Missing or Wrong
Employers must get your W-2 to you by January 31, and that same date is the deadline for filing it with the Social Security Administration.8Social Security Administration. Deadline Dates to File W-2s If it hasn’t arrived by mid-February, start with your employer’s payroll or HR department. Still nothing by the end of February? Call the IRS at 800-829-1040 and the IRS will send the employer a letter requesting the form within ten days.9Internal Revenue Service. W-2 – Additional, Incorrect, Lost, Non-Receipt, Omitted
If the W-2 still doesn’t arrive in time, the IRS will send Form 4852 as a substitute. You estimate wages and withholding from your final pay stub. The estimate doesn’t need to be perfect, but it should be as close as possible, and using Form 4852 can delay your refund while the IRS verifies the numbers.9Internal Revenue Service. W-2 – Additional, Incorrect, Lost, Non-Receipt, Omitted If the real W-2 shows up later with different numbers, file an amended return on Form 1040-X.
The same timeline applies when a W-2 has errors. Contact your employer first, since they can issue a corrected version on Form W-2c.10Internal Revenue Service. About Form W-2 C, Corrected Wage and Tax Statements If they won’t fix it, call the IRS or visit a Taxpayer Assistance Center.11Internal Revenue Service. If You Don’t Get a W-2 or Your W-2 Is Wrong Keep a copy of any Form 4852 until you start receiving Social Security benefits, because discrepancies between your records and the SSA’s can affect your benefit calculations.
What Happens If You Skip a Required Return
If you were required to file and didn’t, the failure-to-file penalty is 5% of the unpaid tax for each month or partial month the return is late, capped at 25%.12Internal Revenue Service. Failure to File Penalty Because the penalty runs on unpaid tax rather than total income, someone whose W-2 withholding already covered the liability could owe nothing in penalty even on a late return. Interest still accrues on any unpaid balance from the original due date.
The real exposure sits with people who had multiple income sources, side work, or investment income and assumed W-2 withholding covered it all. If it didn’t, the late-filing penalty stacks on top of what’s owed. An extension gives you six more months to submit the return, but does not extend the deadline to pay. Interest keeps running on anything unpaid after the original April deadline.
State Returns Are Separate
Federal is only half the picture. Forty-one states plus the District of Columbia impose an individual income tax and most require their own return. Nine states have no individual income tax: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. Anywhere else, you likely have a state filing obligation as well.
State thresholds vary. Some states require a return from anyone with any in-state income; others set minimum amounts that don’t mirror the federal numbers. If you worked in a state other than where you live, you may owe returns in both. Check your state’s department of revenue for the exact rules before you assume the federal answer carries over.