what is the minimum wage earned to file taxes?
['Single filing status: $12,200 if under age 65. $13,850 if age 65 or older.', 'Married filing jointly: $24,400 if both spouses under age 65. ... ', 'Married filing separately — $5 for all ages.', 'Head of household: $18,350 if under age 65. ... ', 'Qualifying widow(er) with dependent child: $24,400 if under age 65.']