Founded in 1954 by Francis J. Rainer, the firm’s mission has always been to provide outstanding service. Our shareholders take pride in our history, drawing on it as we adapt to the rapid changes of today’s more complex business environment.

As of June 2025, Rainer & Company has joined PKF O’Connor Davies, one of the nation’s largest accounting, tax and advisory practices. Our partnership will yield ongoing benefits for our clients, including access to industry-leading resources, global network and top-notch experts. Read the full press release.

Click here to read our annual Tax Planning Guide!

Rainer & Company