[ComfortEagle]

Found this tidbit too, per suntimes.com:

The 95 percent-plus of the American population that earns less than $250,000 would see the following tax breaks: A $500-per-worker tax credit for people who earn less than $150,000 and do not itemize, and a $4,000 credit per child in college. Seniors who earn less than $50,000 would pay no income tax.


and this:

The precise cost depends on whether you assume the current tax breaks would be renewed or would expire.

Assuming they would have been renewed anyway, Obama's plan would bring in an additional $700 billion in taxes over the next 10 years, while McCain's would cost the Treasury $600 billion. Assuming legislators would have let the tax breaks expire, Obama's plan would cost the U.S. Treasury $2.7 trillion and McCain's $3.7 trillion.

The center uses various assumptions both campaigns quarrel with. Each campaign also accuses the other of not being honest with the numbers.