Until Trump files his monthly report with the Federal Election Commission, it's unclear how much of that money will go directly to his campaign and how much will be divvied up between the Republican National Committee and state parties as part of joint fundraising agreements.

But the figures show Trump filled his campaign coffers by boosting his cash on hand by almost $17 million, to $37 million. That's on top of $37 million in the bank for his two joint fundraising committees.

"We are extremely proud of our 69% growth in small dollar donations which shows the broad based support of over one million donors across America," Trump finance committee chairman Steve Mnuchin said in a statement.

"Our volunteers and contributors are clearly committed to electing Donald J. Trump as President in November."

The release also suggests Trump spent about $6 million of his own money in July, including $2 million in matched donations.