You are able to claim someone as a dependent if they meet the IRS rules for either a Qualifying Child or a Qualifying Relative. These categories have specific tests for relationship, residency, age, support and income.
General IRS Rules for Dependents
The IRS has some general rules for dependents.
- Must be a U.S. Citizen, resident alien, U.S. national, or resident of Canada/Mexico.
- Cannot be claimed as a dependent on more than one tax return (with rare exceptions).
- Cannot claim their own dependent if you are claiming them.
- You cannot claim your spouse as a dependent if you file jointly.
Qualifying Child Test
To claim a child, they must meet all of these tests:
- Relationship: Your son, daughter, stepchild, foster child, sibling, or descendant of any of these.
- Age: Under 19 at year-end, or under 24 if a full-time student, or any age if permanently disabled.
- Residency: Must live with you for more than half the year.
- Support: The child cannot provide more than half of their own support.
- Joint Return: The child cannot file a joint tax return (unless only to claim a refund).
Qualifying Relative Test
To claim a relative (like parent or grandparent), they must meet all of these tests:
- Relationship or Residency: Must be related to you (specific type of relative) OR live with you all year as a member of your household.
- Gross Income: Must have taxable income below the IRS threshold ($5,050 for 2025).
- Support: You must provide more than half of their total support.
- Not a Qualifying Child: They cannot be claimed as a qualifying child by you or anyone else.
Relatives Who Don't Have To Live With You
A person related to you in any of the following ways doesn't have to live with you all year as a member of your household to meet this test.
- Your child, stepchild, or foster child, or a descendant of any of them (for example, your grandchild). (A legally adopted child is considered your child.)
- Your brother, sister, half brother, half sister, stepbrother, or stepsister.
- Your father, mother, grandparent, or other direct ancestor, but not foster parent.
- Your stepfather or stepmother.
- A son or daughter of your brother or sister.
- A son or daughter of your half brother or half sister.
- A brother or sister of your father or mother.
- Your son-in-law, daughter-in-law, father-in-law, mother-in-law, brother-in-law, or sister-in-law.
Any of these relationships that were established by marriage aren't ended by death or divorce.
Risks & Considerations
Some things to keep in mind when claiming a dependent.
- Documentation: Keep receipts and records of support you provide (housing, food, medical bills, etc.).
- Audit Risk: Claiming non-household relatives may trigger IRS review, so ensure you meet all tests.
Source
Damian Fields prepared this response using IRS publications as a reference. Since every situation is unique, we encourage you to speak with a tax professional who can provide guidance based on your personal circumstances.