While it’s often said that changing broker-dealers results in losing 30% of your client book, the actual retention rate depends heavily on where you're leaving from, where you're going, and how the transition is handled. Advisors moving from banks to independence often do face steeper losses, due to legal and structural barriers, while those shifting between independent broker-dealers typically experience much smaller attrition. 

The key to maintaining client loyalty lies in how the move is communicated—clients are more likely to stay if they understand how the switch benefits them, not just the advisor. Advisors should frame the conversation around enhanced service offerings, broader product access, reduced fees, or improved technology and stability. 

A real-world example saw one advisor retain 98% of clients by clearly articulating these benefits during a move from a failing firm to a more robust platform. 

Finsum: Ultimately, when advisors lead with client-first messaging, transitions can not only preserve but even grow their practice.