Barack Obama's campaign says the Illinois senator gave nearly a quarter of a million dollars to charity last year. The figure is a significant hike over what Obama gave in the previous nine years combined.
From 1998 through 2006, Obama donated just over $150,000 to charity, but gave $240,000 in 2007.
The reports were posted on Obama's Web site in an effort to pressure rival Hillary Rodham Clinton to do the same. Obama has criticized Clinton for failing to release her tax returns since the end of her husband's White House tenure in 2001.
Clinton says she hopes to put out the returns "within the next week."
The Obama camp says his 2007 tax return will be released by tax day on April 15th.