Appointed by the Durham county Board of Commissioners, Kimberly H. Simpson serves as the Tax Administrator.  In Durham County, the Tax Administrator serves as both the  Assessor and the Tax Collector .  Ms. Simpson joined Durham County in 1996 and served as the Deputy Tax Administrator from 2000 until her appointment on March 10, 2008 as Tax Administrator.

Ms. Simpson has had 22 years of experience in the administration of taxes and is a certified North Carolina Tax Assessor.  She  is certified as both a Real and a Personal Property Appraiser by the North Carolina Department of Revenue.  Ms. Simpson also holds certifications with the NC Tax Collectors' Association as a Certified Tax Collector and with the NC Association of Assessing Officers as a Certified Personal Property Appraiser. She frequently serves as a speaker before the International Association of Assessing Officers, the North Carolina Tax Collectors' Association, and the North Carolina Association of Assessing Officers.

Currently, Ms. Simpson is the Education Chairman for the North Carolina Association of Assessing Officers and for the North Carolina Tax Collectors' Association.  She serves as a member of the North Carolina Property Tax System Steering Committee and a member of the International Association of Assessing Officers (IAAO). She also serves as a member of the IAAO Jeff Hunt CAE Memorial Candidates Assistance Trust Committee. She was appointed by the President of the International Association of Assessing Officers (IAAO) and previously served as Chairman for the 2010 Tax Collection Council.  She is the 2007 recipient of the William A. Campbell award presented by the North Carolina Tax Collectors' Association.

Ms. Simpson holds memberships in the North Carolina Tax collectors' Association, the North Carolina Association of Assessing Officers, The North Carolina Property Mappers' Association, the International Association of Assessing Officers and the Durham Association of Realtors.

She has three children, Jessica who is 28 years old and a set of twins, Christopher and Lauren, who are 26 years old.