WSJ: Sen. Obama outlined a plan Thursday to raise tax rates on capital gains and dividend income from 15% to 20% for individuals and families making more than $200,000 and $250,000, respectively. He also detailed a plan to levy payroll taxes on earnings above $250,000 at a rate between 2% and 4%, though that increase wouldn't occur for at least a decade. Right now, payroll taxes, used to fund retirement benefits, are levied on income up to $102,000.
Jason Furman, Sen. Obama's economic-policy director, said the plan would cut taxes to less than 18.2% of gross domestic product. "That's lower than the level of taxes when Ronald Reagan was president," he said.
For more details on Obama's middle class tax cuts, see this post.