up to what age can you claim your child as a dependent
Qualifying Child. A dependent must be either a qualifying child or qualifying relative.. Only qualifying children have an age test. A qualifying child must be under 19 at the end of the year. If your child is a full-time student, you can claim an exemption until she's 24 years old.If she becomes permanently and totally disabled, you can potentially claim her as a dependent at any age.nly qualifying children have an age test. A qualifying child must be under 19 at the end of the year. If your child is a full-time student, you can claim an exemption until she's 24 years old.