The Brazilian playmaker completed a medical and agreed personal terms on a long-term deal at Camp Nou earlier this week, bringing the long-running saga to an end.
Contrasting figures have been presented regarding Coutinho's official transfer fee, but The Guardian reports that Liverpool have been given around £106m up front.
A leaked document appears to show that the rest of the sum handed to the Reds will come via various bonuses, such as £18m after racking up 100 appearances for his new club and a further £4.5m if they qualify for the 2018-19 Champions League.
That is the same amount Barca are due to hand over if they qualify for the following year's competition, while an additional £4.5m will be paid if they go all the way and lift the trophy in 2018-19 and/or 2019-20.
Coutinho, currently sidelined with a minor thigh injury, is ineligible to play in this season's Champions League.