You can claim a non-relative as a dependent on your federal return, but only if the person clears every part of the IRS “qualifying relative” test: they lived in your home the entire year, their gross income for 2026 was under $5,300, you paid more than half of their support, and they meet the citizenship and joint-return rules.1Internal Revenue Service. Dependents Claiming someone who isn’t related to you is where the IRS applies the closest scrutiny, so it’s worth walking through each requirement before you file.
The Five Tests, All Required
The IRS sorts dependents into two buckets: qualifying child and qualifying relative. A non-relative can only fit the second one, and every test in that category has to be satisfied. Miss one, and the claim fails.
Full-Year Member of Your Household
This is the test that decides most non-relative claims. The person has to live in your home as a member of your household for the entire tax year. Certain relatives (parents, siblings, in-laws, and others) get an exception and can qualify while living elsewhere. An unrelated person does not. Twelve months, same home.2Office of the Law Revision Counsel. 26 USC 152 – Dependent Defined
Temporary absences for school, vacation, medical care, or military service do not break the year, as long as it’s reasonable to expect the person back.1Internal Revenue Service. Dependents
Gross Income Below $5,300
The person’s gross income for 2026 must be less than $5,300.3Internal Revenue Service. Revenue Procedure 2025-32 Gross income here means all taxable income before deductions: wages, self-employment earnings, interest, dividends, rental income, and the taxable portion of Social Security. Tax-exempt income, such as municipal bond interest, is not counted toward the cap.
You Paid More Than Half of Their Support
You must have provided more than half of the person’s total support for the year. Total support is not just what you paid; it’s what everyone spent on the person, including the person’s own money. The next section covers how to calculate this, because it’s where most claims either survive or fall apart.4Internal Revenue Service. Publication 501 – Dependents, Standard Deduction, and Filing Information
Not Someone Else’s Qualifying Child
The person cannot be the qualifying child of you or any other taxpayer. For an unrelated adult sharing your home, this rarely comes up. It matters more when the person could plausibly be claimed as a qualifying child by a parent or other relative.1Internal Revenue Service. Dependents
Joint Return and Citizenship
The person can’t file a joint return with a spouse, with one narrow exception: they may file jointly if the return is only to claim a refund of withheld tax or estimated payments and neither spouse would owe tax on separate returns. And the person must be a U.S. citizen, U.S. national, U.S. resident alien, or a resident of Canada or Mexico.1Internal Revenue Service. Dependents
How the Support Test Actually Works
People underestimate the support test because they think of it as “who paid the bills.” The IRS thinks of it as a percentage: your contribution divided by everyone’s contributions, including the person’s own spending on themselves, has to come out over 50%.
Total support includes food, housing, clothing, education, medical and dental care, recreation, transportation, and similar necessities.4Internal Revenue Service. Publication 501 – Dependents, Standard Deduction, and Filing Information Government benefits the person receives, such as welfare or food assistance, also count as support provided to them.
Housing Is Fair Rental Value, Not Your Mortgage
When the person lives in your home, you don’t add up your mortgage, property taxes, and utilities. You use the fair rental value of the space you provide, which is what someone else would pay to rent equivalent lodging in your area, including a reasonable amount for furniture, appliances, and utilities.4Internal Revenue Service. Publication 501 – Dependents, Standard Deduction, and Filing Information If the person has run of the whole house, use the whole house’s rental value. If they occupy one room, use that room’s value.
The reverse also applies. If you live rent-free in the non-relative’s home, subtract the fair rental value of what they provide you from your support contribution.
What You Leave Out
Some spending doesn’t count toward total support at all:
- Federal, state, and local income taxes paid from the person’s own income, plus Social Security and Medicare taxes
- Life insurance premiums
- Funeral expenses
- Scholarships received by a student
Money the person has but doesn’t spend is also outside the calculation. Savings sitting in an account are not support; only dollars actually spent on support items count.4Internal Revenue Service. Publication 501 – Dependents, Standard Deduction, and Filing Information
What You Get, and What You Don’t
Claiming a qualifying non-relative gets you the Credit for Other Dependents, worth up to $500 per dependent. The credit is nonrefundable, so it can zero out your tax but won’t create a refund on its own.5Internal Revenue Service. Understanding the Credit for Other Dependents It begins phasing out when modified adjusted gross income exceeds $200,000, or $400,000 if you’re married filing jointly.6Internal Revenue Service. Child Tax Credit
One thing a non-relative dependent does not do for you: unlock Head of Household filing status. Even if the person clears every qualifying relative test, an unrelated person isn’t a “qualifying person” for Head of Household. That status requires a specific family relationship, and a friend, partner without legal recognition, or unrelated housemate doesn’t count.8Internal Revenue Service. Publication 501 – Dependents, Standard Deduction, and Filing Information
Putting the Person on Your Return
The dependent goes in the Dependents section on page one of Form 1040. You enter the person’s first and last name, Social Security number, and relationship to you. For an unrelated person, describe the arrangement plainly (for example, “household member” or “none”). Check the box showing the person lived with you all year, and mark the box for “Credit for other dependents” in the credits column.7Internal Revenue Service. Form 1040 (2025) U.S. Individual Income Tax Return
No SSN? The person needs an Individual Taxpayer Identification Number. To get one, file Form W-7 with your tax return, along with documents proving identity and foreign status. You can apply by mail, in person at an IRS Taxpayer Assistance Center, or through a Certifying Acceptance Agent. Applying in person lets you keep your original documents rather than mailing them.9Internal Revenue Service. How to Apply for an ITIN
Records the IRS May Ask For
If the IRS questions the claim, you’ll be asked to prove each test. Reconstructing records after the fact is hard, so build the file as you go:
- Proof you share an address: leases, utility bills, bank statements, or official mail showing both names at the same address across the year
- Support spending: receipts, canceled checks, and bank or card statements for food, clothing, medical care, education, transportation, and recreation
- Housing value: comparable rental listings or a short written estimate of fair rental value for the space you provided
- The person’s income: W-2s, 1099s, or other records confirming gross income stayed under $5,300
Form 886-H-DEP lists what the IRS asks for when auditing a dependent claim. You don’t file it, but reading it before you claim tells you what “enough proof” looks like.
The Cost of Getting It Wrong
An improper dependent claim isn’t just corrected and forgotten. If the IRS finds you underpaid tax because of it, the accuracy-related penalty is 20% of the underpayment, plus interest from the original due date until you pay.10Internal Revenue Service. Accuracy-Related Penalty
If two returns claim the same person, the IRS rejects the second e-filed return. The taxpayer with the stronger claim keeps the dependent; the other has to amend and repay any benefits. For qualifying relatives, the tiebreaker generally favors the person with the higher adjusted gross income.
Before you file, run each of the five tests against the actual facts. Living together satisfies one requirement, not all of them, and the income and support tests are where non-relative claims usually break down.