Ed and Wendy are a married couple with no children. Each earns $75,000 per year, and their combined household adjusted gross income is $150,000. John and Kristen are also married and have $150,000 in combined household adjusted gross income and no children. However, Kristen earns all of the income; John does not work. To answer this question, use the 2018 tax rates for individuals with different filing status below.