McGraw-Hill's Taxation of Individuals 3rd Edition by Brian Spilker,Benjamin Ayers,John Robinson,Edmund Outslay ,Ronald Worsham,John Barrick,Connie Weaver

Exercise 15

In reviewing the tax rate schedule for married filing jointly, Jorge and Anita note that the tax on $150,000 is $27,087.50 plus 28 percent of the taxable income over $139,350.What does the $27,087.50 represent