Head of Household

Head of household sits between single and married filing jointly. For 2026 it carries a $24,150 standard deduction against $16,100 for single, and its tax brackets are wider, so the same income is taxed less. For a single parent earning $70,000, the difference against filing single is usually $1,000 to $1,500 a year, before any credits. That is why it matters, and it is why the IRS requires paid preparers to document every one.

The rules are short. The disputes come from people applying them loosely: a boyfriend who lives in the house, a child who is away at college, a parent who lives across town, a spouse who moved out in August. Below are the three tests, what counts and what doesn’t, and the places people get it wrong.

Three Tests, All Required

The IRS calls it: head of household, Section 2(b)

You can file as head of household for 2026 if all three are true:

• You were unmarried, or considered unmarried, on December 31, 2026.
• You paid more than half the cost of keeping up a home for the year.
• A qualifying person lived with you in that home for more than half the year, with one exception for a dependent parent.

Miss any one and you file single (or married filing separately). There is no partial credit and no “close enough.” Each test has its own definitions, and they are below.

Unmarried on December 31

The IRS calls it: marital status at year end, and “considered unmarried”

Divorced, legally separated under a court decree, widowed before 2026, or never married: you pass. Married on December 31, even if separated and living apart since February: you are married, and you file jointly or separately, unless you meet the considered-unmarried test. That test has four parts: you file a separate return, you paid more than half the cost of your home, your spouse did not live in the home during the last six months of the year, and the home was the main home of your child, stepchild or foster child for more than half the year, and you can claim that child (or could, but let the other parent claim the child with Form 8332).

Two points that trip people. A separation agreement between the two of you is not a legal separation; only a court decree is. And “did not live in the home” means did not live there at all; a spouse who stays a few nights in November fails the test for the whole year.

If your spouse is a nonresident alien, you can treat yourself as unmarried for head-of-household purposes even while married, provided a qualifying person other than the spouse lives with you.

Widows and widowers: for the two years after the year your spouse died, you may be able to use the qualifying surviving spouse status instead, which uses the joint rates and is better than head of household. It requires a dependent child living with you. The page on the widow’s penalty covers what happens after that.

More Than Half the Cost of the Home

The IRS calls it: maintaining a household

Add up what it cost to run the home for the year and you must have paid more than half of it from your own money. Counts: rent or mortgage interest, property taxes, homeowner’s or renter’s insurance, repairs, utilities, and food eaten in the home. Does not count: clothing, school tuition, medical care, vacations, life insurance, car payments, or the value of your own housework.

Money matters by source. Child support you receive and spend on the home counts as your payment. Public assistance, including SNAP, counts as paid by someone else. If a parent or boyfriend pays the rent, that is their payment, not yours. A roommate who pays half the rent means you paid half, not more than half, and you fail; the test is strictly more than 50%.

Keep this simple at the desk: list the home costs, list who paid them, and the answer falls out. Most people pass this test comfortably. The ones who don’t are usually sharing a home with another adult who contributes, and that is the situation the IRS asks about.

The Qualifying Person

The IRS calls it: a qualifying child or a qualifying relative, with a relationship to you

The person who lived with you more than half the year has to be one of these:

• Your qualifying child: your child, stepchild, foster child, sibling, step-sibling, half-sibling, or a descendant of any of them, under 19 (or under 24 and a full-time student, or any age if permanently disabled), who lived with you more than half the year and did not provide more than half of their own support. The child does not have to be your dependent: a child you let the other parent claim with Form 8332 still qualifies you for head of household.
• Your qualifying relative who is your dependent and is actually related to you: a parent, grandparent, sibling, aunt, uncle, niece, nephew, or in-law. A dependent who qualifies only because they lived with you all year, such as a partner or a partner’s child, does not make you head of household, even though you can claim the $500 credit for them.

The parent exception. Your mother or father does not have to live with you. If you can claim your parent as a dependent and you pay more than half the cost of keeping up their home, including a room in an assisted-living facility or nursing home, you qualify. This is the exception most often missed by adult children paying for a parent’s care.

Temporary absences count as time at home: college, a hospital stay, summer camp, military service, a few months with the other parent under a custody schedule that still leaves you with more nights. A child away at college for nine months whose home is still your home lived with you all year for this test.

Only one person can claim a given child for head of household in a year. If both parents live with the child and both are single, the one with more nights wins, and if nights are equal, the higher income. Two parents in the same home cannot both be head of household on the strength of the same child.

What It’s Worth

2026 figures, single vs. head of household

	Single	Head of household
Standard deduction	$16,100	$24,150
Top of the 10% bracket	$12,400	$17,700
Top of the 12% bracket	$50,400	$67,450
Top of the 22% bracket	$105,700	$105,700
Earned income credit	Same table, but head of household is the status single parents use to claim it

The deduction is $8,050 larger and the 12% bracket runs about $17,000 further before the 22% rate starts. For a parent with $60,000 of wages, that is roughly $1,100 less federal tax than filing single. Above about $106,000 the brackets converge and the advantage is mostly the larger deduction.

So the government gives me a bigger deduction for raising a child alone, then asks me to prove it every year. I suppose that’s fair. I’d rather have the help with the laundry.

Where It Goes Wrong

The claims that bring letters

• Both parents claim it for the same child. Only the parent with more nights qualifies. The other parent files single, even in a year they claim the child tax credit under Form 8332.
• The partner’s child. A dependent who is not related to you by blood, marriage or adoption never makes you head of household.
• The spouse who moved out in August. The last-six-months test runs July 1 to December 31. A spouse in the house on July 10 means married filing separately, or jointly.
• Half the rent. Splitting a home 50/50 with another adult fails the more-than-half test. One of you can qualify; it has to be the one who paid more.
• The parent across town whom you help but don’t support more than half. The parent exception requires that you could claim the parent as a dependent, which means more than half of their total support, including their Social Security spent on themselves.
• An adult child who earns too much. A 20-year-old working full time who pays most of their own way is not a qualifying child, and usually not a qualifying relative either (the 2026 gross-income limit for a qualifying relative is $5,250 (verify)).

Because of the error rate, the IRS requires paid preparers to complete a due-diligence checklist for every head-of-household return and keep the answers for three years. Expect to be asked the questions above. It is not suspicion; it is the form.

A Worked Example

Colorado

Colorado uses your federal filing status and federal taxable income, so head of household carries straight through at 4.40% on a smaller taxable income. Colorado’s own child tax credit and its child care expenses credit are for families under certain income levels, and both follow the federal claim: the parent who claims the child’s credits federally claims them in Colorado. There is no separate Colorado head-of-household test.