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PEWAUKEE, Wis. - Mitt Romney will begin this week to raise money jointly with the Republican National Committee, significantly boosting the amount a donor can contribute toward the candidate.

The move, first reported by the Wall Street Journal and confirmed to ABC News by a Romney spokeswoman, will allow donors to give as much as $75,000 to various political committees that will help Romney if he becomes the Republican nominee.

"We have, as have all of the campaigns, talked with the Republican National Committee about how to best prepare to take on President Obama, including entering in to Joint Fundraising Committee," Andrea Saul, a Romney spokeswoman, said in a statement.

"Our donors are ready to mobilize for November and understand that, for the Republican nominee to be able to compete with the $1 billion Obama machine, they need to get started now," said Saul. "We are confident Gov. Romney will be that nominee."

According to the report, the joint committee will allow donors to not only give $2,500 to Romney's primary and general election campaigns, but also as much as $30,800 to the RNC and up to $10,000 to state-level parties in swing states.