“Letting the Bush tax cuts expire... would be the largest increase in personal income taxes since World War II... The tax code changes enacted in 2001 and 2003 are scheduled to expire at the end of 2010. If they do, statutory marginal tax rates will rise across the board; ranging from a 13% increase for the highest income households to a 50% increase in tax rates faced by lower-income households. The marriage penalty will be reimposed and the child credit cut by $500 per child. The long-term capital gains tax rate will rise by one-third (to 20% from 15%) and the top tax rate on dividends will nearly triple (to 39.6% from 15%). The estate tax will roar back from extinction at the same time, with a top rate of 55% and an exempt amount of only $600,000. Finally, the Alternative Minimum Tax will reach far deeper into the middle class, ensnaring 25 million tax filers in its web.”

—John Cogan and R. Glenn Hubbard