Consolidator Succession has bought Birmingham-based IFA Clay Rogers.
The deal will boost Succession's assets under advice by £450 million.
Succession could pay up to £10 million in a mixture of cash and shares to complete the acquisition.
Clay Rogers became a member of Succession's consultancy group in 2013.
The firm's managing directors Mark Rogers (pictured) and Tim Clay will continue to work at the business following the deal.
Rogers said the sale was 'not a retirement play' for him and Clay.
'We are in it for the long term,' he said. 'We want to build a planning hub in the West Midlands and would not do that if we were going to retire.'
The consolidator aims to buy member firms and integrate them with its national advice company.
So far Succession has acquired 25 firms. Succession chief executive Simon Chamberlain has previously said it will buy 50 firms by the end of next year.