Whether you have to file taxes for 2025 comes down to your gross income, your filing status, and your age. A single filer under 65 can skip a federal return if gross income stayed below $15,750; a married couple filing jointly, both under 65, has room up to $31,500.1Internal Revenue Service. Check if You Need to File a Tax Return Special situations override the thresholds, and even when you’re not required to file, doing so is often the only way to collect a refund you’re owed.
2025 Income Thresholds by Filing Status
Gross income is the IRS’s starting point. It covers all income from any source that isn’t specifically tax-exempt: wages, freelance pay, investment gains, rental income, most retirement distributions.2Office of the Law Revision Counsel. 26 USC 61 – Gross Income Defined For tax years through 2025, you generally must file when your gross income equals or exceeds your standard deduction.3Office of the Law Revision Counsel. 26 USC 6012 – Persons Required to Make Returns of Income
For 2025 returns (filed in 2026), the thresholds are:1Internal Revenue Service. Check if You Need to File a Tax Return
- Single, under 65: $15,750
- Single, 65 or older: $17,550
- Married filing jointly, both under 65: $31,500
- Married filing jointly, one spouse 65 or older: $33,100
- Married filing jointly, both 65 or older: $34,700
- Head of household, under 65: $23,625
- Head of household, 65 or older: $25,625
- Married filing separately, any age: $5
The bumps at 65 come from an extra standard deduction the IRS grants for age: $2,000 for single and head-of-household filers, and $1,600 per qualifying spouse for married filers.4Internal Revenue Service. Publication 554 (2025), Tax Guide for Seniors
The $5 figure for married filing separately isn’t a typo. It’s set that low deliberately, to stop couples from splitting income across separate returns to duck tax. Qualifying surviving spouses use the joint-filer thresholds for up to two years after a spouse’s death.3Office of the Law Revision Counsel. 26 USC 6012 – Persons Required to Make Returns of Income
The IRS uses your status as of December 31, 2025 to decide which threshold applies.5Internal Revenue Service. Filing Status
If Someone Can Claim You as a Dependent
Dependents follow their own rules. The IRS splits their income into earned (wages, salary, tips) and unearned (interest, dividends, capital gains), and a dependent must file for 2025 if any of these apply:6Internal Revenue Service. Publication 501 (2025), Dependents, Standard Deduction, and Filing Information
- Unearned income was more than $1,350
- Earned income was more than $15,750
- Gross income was more than the larger of $1,350, or earned income (up to $15,300) plus $450
The gross income test catches mixed-income cases where a teenager or student sits below each individual threshold but crosses the line when the two are added together. It applies whether the dependent is a working teenager, a college student with brokerage income, or an elderly parent you support.
Even when a dependent isn’t required to file, it often pays to file anyway. A 16-year-old who earned $4,000 and had federal income tax withheld won’t see that money again without a return.
Situations That Require Filing Regardless of Income
Several triggers force a return even if your gross income is below the standard threshold.
$400 in Self-Employment Earnings
If your net earnings from self-employment reached $400 or more, you must file.7Office of the Law Revision Counsel. 26 USC 1402 – Definitions Net earnings means business revenue minus legitimate business expenses. The $400 rule applies to freelancers, gig workers, and side-business owners, and it stands on its own: it doesn’t matter whether a separate W-2 job keeps your combined income below the standard threshold.
The reason for the low bar is Social Security and Medicare. Employees split those taxes with an employer; the self-employed owe the full 15.3% themselves (12.4% Social Security plus 2.9% Medicare), and the IRS collects it through the return.
If you expect to owe $1,000 or more in federal tax, quarterly estimated payments are generally required in mid-April, mid-June, mid-September, and mid-January.8Internal Revenue Service. Estimated Taxes
Advance Premium Tax Credit
If you received advance Premium Tax Credit payments toward Marketplace health coverage, you have to file a return and reconcile them on Form 8962. Skipping the return can cost you future credit eligibility.9Internal Revenue Service. Instructions for Form 8962 (2025)
Alternative Minimum Tax and Household Employees
You must file if you owe the alternative minimum tax, or if you paid a household employee (nanny, housekeeper) and owe household employment taxes on their wages.
Church Employee Income
$108.28 or more from a church or church-controlled organization that has opted out of employer Social Security and Medicare taxes triggers a filing requirement, with self-employment tax owed on that income.10Internal Revenue Service. Elective FICA Exemption – Churches and Church-Controlled Organizations
Digital Asset Sales
Selling, exchanging, or receiving cryptocurrency or other digital assets as payment doesn’t by itself create a filing requirement, but any gains count toward gross income and can push you across the threshold. Buying digital assets with dollars and simply holding them does not.11Internal Revenue Service. Determine How to Answer the Digital Asset Question
When Filing Pays Even Though You Don’t Have To
A lot of money goes unclaimed every year by people who weren’t required to file. Refundable credits pay out even when your tax bill is zero, but only if you file a return.
Earned Income Tax Credit
The EITC is worth up to $8,046 for a family with three or more qualifying children for 2025, and up to $649 for workers with no children.12Internal Revenue Service. Earned Income and Earned Income Tax Credit (EITC) Tables The credit phases out as income rises, topping out at $70,244 for married couples filing jointly with three or more children. Workers below the standard filing threshold almost always qualify for at least some of it.
Additional Child Tax Credit
The refundable portion of the Child Tax Credit pays up to $1,700 per qualifying child. You need at least $2,500 in earned income to start claiming it.13Internal Revenue Service. Child Tax Credit
Refund of Withheld Tax
If your employer withheld federal income tax from your paychecks but your income was below the filing threshold, filing is the only route to that money. There’s no penalty for filing late when you’re owed a refund, but there’s a three-year deadline from the original due date. Miss it, and the money goes to the Treasury.14Internal Revenue Service. Time You Can Claim a Credit or Refund
Free Filing
If your adjusted gross income for 2025 was $89,000 or less, IRS Free File lets you prepare and submit a federal return at no charge through one of eight partner providers.15Internal Revenue Service. 2026 Tax Filing Season Opens With Several Free Filing Options Available Free File Fillable Forms are available at any income level.
One more reason not to skip filing when you’re on the fence: if you never file at all, there’s no statute of limitations, and the IRS can assess tax against you at any point in the future.16Internal Revenue Service. How Long Should I Keep Records
State Taxes and Foreign Accounts Are Separate
Meeting or missing the federal threshold says nothing about your state obligations. Most states with an income tax use much lower thresholds than the federal ones; about half require a return from anyone earning any income within the state. Nine states don’t tax wage income at all. Check your state tax agency for the specific rule.
Foreign accounts have their own tracks. If your combined foreign bank and financial account balances passed $10,000 at any point in the year, FinCEN Form 114 (the FBAR) is required, filed separately from your tax return.17FinCEN.gov. Report Foreign Bank and Financial Accounts Under FATCA, single filers with foreign financial assets over $50,000 on December 31 or $75,000 at any point during the year (or $100,000/$150,000 for joint filers) must attach Form 8938 to their return.18Internal Revenue Service. Summary of FATCA Reporting for U.S. Taxpayers