La Liga’s leaders will part with €120m as a guaranteed base fee, with another €40m in performance and appearance-related add-ons that are expected to be triggered.
The 25-year-old will move ahead of Ousmane Dembele as Barca’s highest-cost recruit, also surpassing Paul Pogba as the biggest player trade involving an English club.
Liverpool failed in their exhaustive efforts to convince Coutinho, who did not travel with the squad to a warm-weather camp in Dubai , to remain on Merseyside until the end of the season at the very least.
The Brazilian declined their proposed incentives and offer of a higher wage , repeating his intention to move to Camp Nou with immediate effect.
Having approached the Reds on July 20 with the first of three unsuccessful summer bids bloated by improbable clauses, Barca finally succeeded in their pursuit of the playmaker on Saturday.
Liverpool were definitive in their stance that Coutinho was not for sale at any price in the summer, rejecting his transfer request in the process, but with their No.10 maintaining his desire to depart and Barca finally tabling an acceptable package for his services, Jurgen Klopp agreed to sanction his sale.
He is now the third most expensive footballer in the world, behind Paris Saint-Germain pair Neymar and Kylian Mbappe.