When Not to File Taxes: Income Floors and the $400 Rule

You don’t have to file a federal tax return if your gross income for the year stays below the standard deduction for your filing status. For 2026, that means a single filer under 65 can earn up to $16,100 and a married couple filing jointly can earn up to $32,200 without filing.¹ Several situations override that basic rule, though: self-employment income above $400, being claimed as a dependent, and certain tax benefits you received during the year can all require a return even when your income looks small.

2026 Income Floors by Filing Status

Federal law generally exempts you from filing when your gross income falls below the standard deduction for your status.² For 2026, the thresholds for filers under 65 are:¹

Single: $16,100
Married filing jointly, both spouses under 65: $32,200
Head of household: $24,150
Qualifying surviving spouse: $32,200
Married filing separately: $5

The married-filing-separately number is not a typo. The statute exempts unmarried filers and joint filers whose income falls below the standard deduction, but it does not extend that break to married people who file separate returns.² The IRS sets the practical floor at $5 of gross income, meaning nearly anyone using that status has to file.³

Higher Floors If You’re 65 or Older

Once you hit 65, your filing floor moves up. You get a traditional additional standard deduction for age, which was $2,000 for single and head-of-household filers in 2025 and $1,600 per qualifying spouse for married filers, adjusted annually for inflation.³

For tax years 2025 through 2028, the One, Big, Beautiful Bill Act added a separate $6,000 deduction for taxpayers 65 and older. It stacks on top of the traditional add-on, and each qualifying spouse in a married couple can claim it, so a couple where both are 65 or older gets $12,000 combined.⁴

Put together, a single person 65 or older may be able to earn roughly $24,000 or more in 2026 before a return is required, and a married couple where both spouses are 65 or older could clear something close to $47,000. The new $6,000 deduction phases out above $75,000 of modified adjusted gross income for single filers and $150,000 for joint filers, but if you’re anywhere near the filing question you are well below those cutoffs.⁴

Different Rules If You’re Claimed as a Dependent

If a parent or someone else can claim you as a dependent, the standard thresholds don’t apply. The IRS splits your income into earned (wages, tips, salary) and unearned (interest, dividends, capital gains), and either category on its own can force a return.

For 2025, a single dependent under 65 has to file if any of these are true:³

Unearned income alone is more than $1,350
Earned income alone is more than $15,750
Gross income exceeds the larger of $1,350 or earned income (up to $15,300) plus $450

These numbers adjust for inflation, so 2026 figures will be slightly higher; Publication 501 will carry the updated amounts once released. The unearned income threshold is deliberately low because it’s aimed at investment income parked in a child’s name, even in modest amounts. A dependent who is 65 or older or blind gets higher thresholds: for 2025, filing kicks in above $3,350 of unearned income or $17,750 of earned income for a single dependent in that category.³

The $400 Rule for Self-Employment

Freelance work, side businesses, and independent contracting have their own floor: $400 in net earnings.⁵ That number ignores the general standard-deduction thresholds. Earn $500 driving for a delivery app with no other income for the year, and you still have to file, because self-employed workers owe Social Security and Medicare taxes on their earnings and nobody withheld those taxes for them.

Net earnings means what’s left after ordinary business expenses come out of your gross business revenue. If that profit comes in under $400 and you have no other income pushing you above the standard thresholds, no return is needed.

Other Situations That Require a Return Regardless of Income

A short list of specific circumstances forces you to file even when your income sits well below the threshold. These are easy to miss.

You Got Advance Premium Tax Credits

If you received advance premium tax credits during the year to help pay for marketplace health insurance, you must file to reconcile them, no matter your income. Form 8962 compares the advance payments made on your behalf to the credit your final income actually entitled you to.⁶ Skip the step and the IRS may bill you or reduce future credits.

Your HSA Made a Distribution

Any distribution from a health savings account during the year requires you to file Form 8889 with a return, whether or not the money went to qualified medical expenses and whether or not you have taxable income otherwise.⁷

You Paid a Household Employee

Paying a nanny, housekeeper, caregiver, or other household employee cash wages of $3,000 or more in 2026 means you must withhold and pay Social Security and Medicare taxes on those wages. Schedule H reports it, attached to a Form 1040 you have to file even if your own income is below the threshold.⁸

Income That Doesn’t Count Toward the Threshold

Not every dollar you receive is gross income for filing purposes. Some common categories are partly or fully excluded, and that can keep you under the threshold even when your bank statements look busy.

Social Security

Social Security retirement and disability benefits are partly or fully excluded from gross income depending on your total earnings. For a single filer, if combined income (adjusted gross income plus tax-exempt interest plus half your Social Security) stays under $25,000, the benefits generally aren’t taxable. The joint-filer threshold is $32,000.⁹ If Social Security is your only income, you almost certainly don’t need to file.

Gifts and Inheritances

Cash or property received as a gift or inheritance is excluded from gross income.¹⁰ Any gift tax is the giver’s problem, not yours. Income the property later generates, such as dividends from inherited stock or rent from an inherited house, does count.

Municipal Bond Interest and a Few Others

Interest on state and local government bonds is generally exempt from federal income tax and doesn’t count toward your filing threshold. Other common exclusions include certain veterans’ benefits, life insurance proceeds paid because of someone’s death, and qualified Roth IRA distributions. Once you strip those out, whatever’s left is what you measure against the threshold.

When You Should File Anyway

Being below the filing threshold isn’t always a reason to skip. In several common cases, filing is the only way to collect money that’s yours.

Withholding Refunds

If your employer took federal income tax out of your paychecks and your income turned out to be below the threshold, you likely owe nothing and every dollar of withholding is refundable. You have three years from the original due date of the return to claim it; after that, the IRS keeps it.¹¹

Refundable Credits

Refundable credits can pay you cash even when your tax bill is zero, but only if you file. The two big ones for lower-income households are the Earned Income Tax Credit and the Child Tax Credit.

The EITC is fully refundable and can top $8,000 for a family with three or more qualifying children, depending on income and filing status. Workers without children may qualify for a smaller version. Income limits vary with the number of children claimed and your filing status.¹²

The Child Tax Credit is worth up to $2,200 per qualifying child under the One, Big, Beautiful Bill Act, with a refundable portion (the Additional Child Tax Credit) available when the credit exceeds your tax. Getting the refundable piece generally takes at least $2,500 in earned income.¹³ Leaving thousands unclaimed because a return wasn’t strictly required is one of the more expensive mistakes a low-income household can make.

What Happens If You Were Required to File and Didn’t

The IRS charges a failure-to-file penalty of 5% of the unpaid tax for each month or partial month the return is late, capped at 25%.¹⁴ Because the penalty is calculated on unpaid tax, someone who is actually due a refund typically owes no penalty for filing late; the cost is the delayed refund and the three-year deadline to claim it.

Self-employed workers who miss the $400 threshold face the penalty on unpaid self-employment tax, which covers their Social Security and Medicare contributions. Even small amounts of unreported side income can grow into a real bill over time, which is why tracking freelance earnings through the year matters more than the modest dollar figures might suggest.

1
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026, Including Amendments from the One, Big, Beautiful Bill
2
Office of the Law Revision Counsel. 26 U.S.C. 6012 – Persons Required to Make Returns of Income
3
Internal Revenue Service. Publication 501 – Dependents, Standard Deduction, and Filing Information
4
Internal Revenue Service. One, Big, Beautiful Bill Act – Tax Deductions for Working Americans and Seniors
5
Office of the Law Revision Counsel. 26 U.S.C. 1402 – Definitions
6
Internal Revenue Service. Updates to Questions and Answers About the Premium Tax Credit
7
Internal Revenue Service. Instructions for Form 8889 – Health Savings Accounts
8
Internal Revenue Service. Publication 926 – Household Employer’s Tax Guide
9
Social Security Administration. Must I Pay Taxes on Social Security Benefits
10
Office of the Law Revision Counsel. 26 U.S.C. 102 – Gifts and Inheritances
11
Internal Revenue Service. Time You Can Claim a Credit or Refund
12
Internal Revenue Service. Earned Income and Earned Income Tax Credit Tables
13
Internal Revenue Service. Child Tax Credit
14
Internal Revenue Service. Failure to File Penalty