A POLITICO analysis of FEC records found that, through the end of August, Trump’s campaign has spent at least $8.2 million at Trump's own businesses, including to hold events at his hotels, buy food from his restaurants and rent office space for its headquarters in his Manhattan office tower.

But the biggest chunk of the expenses, almost $6 million, were to TAG Air, Inc.

Trump, who once said “I could be the first presidential candidate to run and make money on it,” has attracted criticism for mixing business and politics to an unprecedented degree. He has made a point of highlighting his properties on the campaign trail, leading opponents to accuse him of using his presidential bid to promote his brand and line his pockets.

http://www.politico.com/story/2016/09/donald-trump-secret-service-campaign-travel-payments-228553