Mitt and Ann Romney have invested their own money in his presidential bid, each donating $75,000 to the joint Romney-Republican National Committee Victory Fund for the month of May.
The Hill confirmed the donation, which was first reported by CNN. It will appear in the committee's May report to the Federal Election Commission.
In 2008, Romney spent $41 million of his own money on the presidential race.
Earlier this week, Romney's campaign announced it and the RNC had jointly raised more than $40 million in April.