President Trump's Summit with Russia's Vladimir Putin Cost Over $300k

President Trump's historic summit with Russia's Vladimir Putin didn't come cheap ... U.S. taxpayers are on the hook for more than $300k ... TMZ has learned.

According to federal docs -- obtained by TMZ -- the State Department made tons of new purchase orders specifically for Monday's Trump-Putin summit in Helsinki, Finland. For hotels alone, the bill was $128,681.39. Tech support was a cool $100,972.50, and that included $12k alone for laptop/printer rentals.

And, as much as Trump hates the "fake news" media, he still fed them pretty well. Catering for the press cost $52,703.38. The Secret Service's ballistic glass installation and removal alone cost $15,913.35. There's also a $56k airport hangar rental fee. All in all ... the U.S. Gov dropped $302,124.62.