Taxpayers' household income is the total of the taxpayers' modified adjusted gross income (MAGI), the taxpayer's spouse's MAGI if married and filing a joint return, and the MAGI of all dependents required to file a federal income tax return.
David and Melinda are Married Filing Jointly taxpayers. They have one child, Philip, age 17, whom they claim as a dependent. Philip works part time and has a filing requirement. David and Melinda's household income calculation would include their modified adjusted gross income, as well as Philip's modified adjusted gross income.