West Brom have announced the takeover by Chinese group Yunyi Guokai Sports Development Limited has been ratified.
The Financial Conduct Authority and the Premier League are satisfied the takeover adheres to its rules and regulations after making the routine checks.
The Premier League has also had its Owners' and Directors' Test satisfied after the Baggies agreed to sell the club in August.
Former chairman Jeremy Peace has sold the club to Guochuan Lai, who controls Yunyi Guokai Sports Development Limited, and former Blackburn chief executive John Williams was announced as their new chairman last month.