This is entirely up to you. Most DSOs will seek a commitment of two years after you sell your practice. This helps ensure a smooth transaction. After that, you are typically free to leave. Of course, it is up to you to negotiate any terms you would like. Make sure it is included in the acquisition documents if you plan to retire immediately upon sale. Many dentists sell their practice to a DSO and stay on for years as an employee, independent contractor or even equity partner.