Yes, you can claim a non-relative as a dependent, but only if the person clears every test the IRS applies to a “qualifying relative.” In practice that means they lived in your home for the entire year, earned less than $5,300 in gross income for 2026, and got more than half of their financial support from you, along with meeting the joint-return and citizenship rules.1Internal Revenue Service. Dependents Get it right and you can claim the Credit for Other Dependents, worth up to $500. Get it wrong and the IRS can hit you with penalties and interest.
The Five Tests Your Non-Relative Has to Pass
The IRS recognizes two kinds of dependents: qualifying children and qualifying relatives. A friend, partner, or unrelated housemate will never fit the qualifying child category, which is reserved for your own children, siblings, and their descendants. So a non-relative has to satisfy all five qualifying relative tests. Miss one and the claim fails.
Not Someone Else’s Qualifying Child
The person cannot be the qualifying child of you or any other taxpayer.1Internal Revenue Service. Dependents For most unrelated adults living with you, this is automatic.
Lived With You All Year
This is the test that decides most non-relative claims. Certain relatives (parents, siblings, in-laws, aunts, uncles) can be claimed even if they live somewhere else. Unrelated individuals get no such break. They have to actually share your home for the full twelve months as a member of your household.2Office of the Law Revision Counsel. 26 USC 152 – Dependent Defined
Temporary absences don’t count against you. Time away for school, vacation, medical treatment, or military service is treated as if the person never left, as long as it’s reasonable to expect them to return.1Internal Revenue Service. Dependents Someone who moved in during February or moved out in November fails this test outright.
Gross Income Under $5,300
For the 2026 tax year, the non-relative’s gross income has to be under $5,300.3Internal Revenue Service. Revenue Procedure 2025-32 Gross income means all taxable income before deductions: wages, self-employment earnings, interest, dividends, rental income, and the taxable portion of Social Security. Tax-exempt income like municipal bond interest does not count toward the limit.
You Provided More Than Half Their Support
You have to have provided more than half of the person’s total support for the year.4Internal Revenue Service. Publication 501 – Dependents, Standard Deduction, and Filing Information This is where careful claims fall apart, because “support” is defined broadly and the person’s own spending counts against your share. The mechanics are worth working through, and the next section does that.
Joint Return and Citizenship
The person can’t file a joint return with a spouse. The only exception is when the joint return exists solely to claim a refund of withholding or estimated payments, and neither spouse would owe tax on separate returns. The person also has to be a U.S. citizen, U.S. national, U.S. resident alien, or a resident of Canada or Mexico.1Internal Revenue Service. Dependents
Working Through the Support Test
The IRS isn’t asking whether you paid the person’s bills. It’s asking what fraction of their total support came from you compared to every other source, including their own money. Total support covers 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 like welfare and food assistance count as support the person received, even though the money came from somewhere else.
How to Value Housing
If the person lives in your home, you don’t use your actual mortgage, property taxes, or utility bills. You use the fair rental value of the space you provide, meaning what a stranger would reasonably pay for equivalent lodging in your area, including a reasonable allowance for furniture, appliances, and utilities.4Internal Revenue Service. Publication 501 – Dependents, Standard Deduction, and Filing Information Whole house, whole-house rental value. One room, that room’s rental value.
The rule cuts both ways. If you live rent-free in the other person’s home, reduce your side of the support figure by the fair rental value of the lodging they’re providing to you.
What Doesn’t Go in the Support Total
- Federal, state, and local income taxes and Social Security and Medicare taxes paid from the person’s own income
- Life insurance premiums
- Funeral expenses
- Scholarships received by a student
Money the person has but doesn’t spend also stays out of the calculation. A non-relative with $10,000 sitting in savings that they never touch during the year contributes nothing to total support. Only funds actually spent on support items are counted.4Internal Revenue Service. Publication 501 – Dependents, Standard Deduction, and Filing Information
What You Actually Get by Claiming Them
A qualifying non-relative gets you the Credit for Other Dependents, worth up to $500 per dependent. It’s a nonrefundable credit, so it can wipe out tax you owe but won’t produce a refund past zero.5Internal Revenue Service. Understanding the Credit for Other Dependents The credit phases out once modified adjusted gross income passes $200,000 ($400,000 if married filing jointly) and drops off gradually from there until it’s gone.6Internal Revenue Service. Child Tax Credit
What you don’t get: Head of Household filing status. Even a non-relative who fully qualifies as your dependent is not a “qualifying person” for Head of Household purposes. The IRS reserves that status for specific family relationships, and an unrelated housemate or partner doesn’t fit the list.4Internal Revenue Service. Publication 501 – Dependents, Standard Deduction, and Filing Information Since Head of Household comes with lower rates and a larger standard deduction, this is a real limit to know about before you plan around it.
How to Put a Non-Relative on Your Return
You enter the dependent in the “Dependents” section on page one of Form 1040. The form wants first name, last name, Social Security number, and relationship. For a non-relative, describe the actual arrangement (for example, “none” or “household member”). Check the box showing the person lived with you all year, and select “Credit for other dependents” in the credits column.7Internal Revenue Service. Form 1040 (2025) U.S. Individual Income Tax Return
If the person doesn’t have a Social Security number, they’ll need an Individual Taxpayer Identification Number. That means filing Form W-7 with your 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. In-person filing lets you authenticate original documents on the spot rather than mailing them to the IRS.8Internal Revenue Service. How to Apply for an ITIN
Records to Keep
The IRS can ask you to prove every element of the qualifying relative tests, and reconstructing this material after the fact is harder than gathering it as you go. Keep at least:
- Proof of shared address for the whole year: lease agreements, utility bills, bank statements, or official mail showing the same address for both of you
- Support records: receipts, canceled checks, and bank statements covering food, clothing, medical care, education, transportation, and recreation
- Housing valuation: comparable rental listings or a brief written estimate of the fair rental value of the space you provided
- Income documentation: copies of the non-relative’s W-2s, 1099s, or other records showing gross income stayed below $5,300
Form 886-H-DEP lists exactly what the IRS asks for when it audits a dependent claim. You don’t file it with your return, but reading through it before you file tells you what proof the IRS considers sufficient.
What Happens If You Get It Wrong
If the IRS decides you understated your tax by claiming a dependent who didn’t qualify, the accuracy-related penalty is 20% of the underpayment.9Internal Revenue Service. Accuracy-Related Penalty Interest runs from the original due date of the return until you pay in full.
If two people try to claim the same person, the IRS will reject the second e-filed return. For a qualifying relative, the tiebreaker generally goes to the claimant with the higher adjusted gross income; the other has to amend and repay any benefits already received.
Before you file, walk through all five tests honestly and keep the records that back each one up. Living together is a requirement, not the whole answer, and the support and income tests are where the IRS pays closest attention.