A number of Democratic politicians—and some economists including Paul Krugman—have recently advocated substantially higher income tax rates on high-income Americans. The current top federal tax rate on income is 37 percent for married people filing jointly, and it applies to all taxable income over $612,350. The highest state income tax rate in the United States is in California, where it is 13.3 percent on taxable income over $1 million. Thus, the highest-income people in California lose over half of their incremental income to the government.