“I got a little bit of income from my book, but I gave that all away,” Mr. Romney told reporters after an event here. “And then I get speakers’ fees from time to time, but not very much.”

Financial disclosure forms that candidates are required to file annually shows that Mr. Romney earned $374,327.62 in speakers’ fees from February of 2010 to February of 2011, at an average of $41,592 per speech.