Although they are unlikely to spend anywhere near as heavily this summer as last, they will not suffer squad or salary restrictions and could make bigger moves further down the line if they break even this year.
The European governing body of the sport had opened an investigation into the French champions as a result of their sizable expenditure in the summer of 2017, but this has now been officially closed.
Omnisport understands that PSG will face sanctions if they are unable to raise €60 million (£53m/$71m) in income by the end of June.
During the investigation, UEFA have decided that the management of the club's finances in the last three years is correct, although they say they will keep a close eye on them, especially in the transfer market. The decision follows a detailed review of transfer contracts and an analysis of the related management accounts which confirmed that such transactions were in line with the UEFA club licensing and financial fair play regulations.
"The financial impact of transfer activities as from the 2017 summer - up to and including the upcoming transfer window - and compliance with the break-even requirement for the 2018 financial year will remain under close scrutiny and will be thoroughly looked at in the coming weeks", Uefa said in statement.
That deal was reported to be worth €180 million.
It came after PSG broke the world record transfer fee in August 2017 when they signed Neymar for £200m.
PSG bought Brazil forward Neymar for €222 million, more than double the previous price paid for a player, and later signed Kylian Mbappe on loan from AS Monaco with an option to buy after one season.
The club denied the Financial Times report.
This is because of Uefa's Financial FFP "break-even" rules, introduced in 2013, which requires clubs to balance their spending and revenue.