Filing status and dependents: the tests

A reader wants to know which filing status the rules point to and who can be claimed.

Nothing here decides whether a return is due for you, what your status is, or who you may claim. Those turn on your own facts.

What the rules say

We do not work out anyone's tax, refund or balance. We explain what each rule asks for; the arithmetic belongs to you and to whatever you file with.

• Marital status for the year is determined as of the last day of the tax year, subject to the statutory rules for a spouse who died during the year and for a married person living apart.
• A joint return is an election that both spouses make. A married person who does not make it files a separate return, and in stated circumstances a married person living apart may qualify as head of household.
• Head of household requires an unmarried or treated-as-unmarried filer who furnished more than half the cost of maintaining a household that was the principal place of abode of a qualifying person for the required part of the year.
• The qualifying surviving spouse status is available for a limited number of years after the year of a spouse's death and only where the filer maintains a household for a dependent child.
• A dependent is either a qualifying child or a qualifying relative, and each route has its own tests of relationship, residence, age, support and, for the relative route, gross income.
• Where more than one taxpayer could claim the same person, the statute resolves the conflict by tie-breaking rules rather than by whoever files first.
• Being claimed by another taxpayer does not remove a person's own filing duty; it changes which chart and which standard deduction limit applies to them.

The amounts for this tax year

Every amount on this page is stated for one tax year and taken from the material that published it for that year. An amount from a different year is a different rule.

• Tax year 2025 — Gross income limit for a qualifying relative, all cases: $5,200. The gross income figure a person must be below for this tax year to be a qualifying relative of another taxpayer.

The records this part asks for

• Records of who lived in the home, for how long, and who paid the household costs — Filing status and dependency both turn on residence and household-cost facts rather than on relationship alone.

What we are not saying

• Not: that status follows how most of the year was spent.
• Not: that marriage makes the joint status automatic.
• Not: that a married person can never file as head of household.
• Not: that having a child makes a filer head of household.
• Not: that being the higher earner makes a filer head of household.
• Not: that a joint return is available for years after the year of death.
• Not: that the status continues indefinitely.
• Not: that a child living in the home is automatically a dependent.
• Not: that supporting someone financially is on its own enough.
• Not: that filing earlier settles who may claim a person.
• Not: that an accepted return settles who was entitled to claim.
• Not: that a claimed person is excused from filing.
• Not: Having a child in the home does not by itself make that child a dependent, and it does not by itself produce head of household.

Sources

Every source on this page shows the body that issued it and the date we read it. Amounts are stated for tax year 2025, and the text behind this centre was last read on 2026-08-16.

• 26 U.S.C. § 1 — Tax imposedUnited States Code (GPO, govinfo). Read for: Separate rate structures exist for married individuals filing joint returns and surviving spouses, for heads of households, for unmarried individuals, and for married individuals filing separate returns. not year-scoped. Read on 2026-08-16.
• 26 U.S.C. § 2 — Definitions and special rulesUnited States Code (GPO, govinfo). Read for: Surviving spouse status is defined by statute and is limited to taxpayers meeting stated conditions in the two years following the year a spouse died. not year-scoped. Read on 2026-08-16.
• 26 U.S.C. § 6012 — Persons required to make returns of incomeUnited States Code (GPO, govinfo). Read for: The obligation to make a return is imposed by statute on individuals whose gross income meets the amount the section specifies, with separate rules for individuals who may be claimed as a dependent of another taxpayer. not year-scoped. Read on 2026-08-16.
• 26 U.S.C. § 152 — Dependent definedUnited States Code (GPO, govinfo). Read for: A dependent is either a qualifying child or a qualifying relative, each defined by its own set of statutory tests. not year-scoped. Read on 2026-08-16.
• 26 U.S.C. § 63 — Taxable income definedUnited States Code (GPO, govinfo). Read for: Taxable income is gross income minus the deductions allowed, and a taxpayer either takes the standard deduction or itemises deductions. not year-scoped. Read on 2026-08-16.
• Instructions for Form 1040 and 1040-SR (2025)Internal Revenue Service. Read for: The 'Do You Have To File?' section presents three separate routes: a gross income chart organised by filing status and age, a separate chart for individuals who may be claimed as a dependent, and a chart of other situations that require a return regardless of income. tax year 2025. Read on 2026-08-16.
• Publication 501, Dependents, Standard Deduction, and Filing Information (2025)Internal Revenue Service. Read for: Restates in plain language the filing status definitions, the dependent tests, and the standard deduction tables for tax year 2025. tax year 2025. Read on 2026-08-16.

Where to go next

Educational information only. This is not tax advice, we are not your tax preparer, and nothing here is a determination about your own return. Check the linked official sources, and consider a professional for anything that turns on your specific facts.