When you file your tax return, you must check one of the following filing statuses: Single, married filing jointly, married filing separately, head of household or qualifying widow(er). Who qualifies for "head of household" tax filing status, which is more favorable than single? To qualify, you must maintain a household, which for more than half the year, is the principal home of a “qualifying child” or other relative of yours whom you can claim as a dependent (unless you only qualify due to the multiple support rules). A qualifying child? A child is considered qualifying if he or she: Lives in your home for more than half the year, Is your child, stepchild, adopted child, foster child, sibling stepsibling (or a descendant of any of these), Is under...