Marian R. Derr has more than three decades of experience in many facets of federal, state and local taxation, with particular emphasis on income tax compliance and planning for high net worth individuals, corporations and partnerships as well as estates, trusts and non-profits. She also devotes her practice to litigation consulting services, including civil tax controversies, due diligence investigations and bankruptcy trustee support.  Prior to joining Duane Morris, she was a manager with local, regional and international CPA firms.

Ms. Derr is a Certified Public Accountant and member of the American Institute of Certified Public Accountants (AICPA) and the Pennsylvania Institute of Certified Public Accountants (PICPA). She graduated from Ursinus College with a Bachelor of Science degree in Mathematics and Economics.