Jan Lewis is a Tax Partner with BMSS Advisors and CPAs in Ridgeland, MS. Her responsibilities include income and estate tax planning, research, and compliance for individual and business clients. Her areas of practice include healthcare, oil & gas, construction, real estate, and high net worth individuals. She has taught continuing education classes throughout Mississippi and nationwide to CPAs in the areas of income tax planning, business tax matters, and S tax matters, and has given presentations on financial literacy, tax reform, and other tax issues to various groups across the country.

She has authored articles on tax matters for the Tax Adviser publication and has served as a webcast presenter for the AICPA’s Tax Division. She has been interviewed by Fox Business News, NPR, Forbes, Wall Street Journal, Bloomberg, Bankrate, and the Detroit Free Press for her insight on various policy and practice matters affecting taxpayers. She was selected as one of Forbes Top 200 CPAs in America in 2024.

She is active in the Mississippi Society of CPAs, previously serving as President of the Society, a member of the MSCPA Board of Governors, an officer of the Society’s Central Chapter, and a trustee of the Mississippi Tax Institute. She currently is a member of the MSCPA's Long Range Planning Committee and the MSCPA's Young CPAs Liaison Committee.

Lewis is a native of Jackson, MS, and a 1985 Summa Cum Laude graduate of Mississippi State University. She is a member and past chair of the Adkerson School of Accountancy Advisory Board at MSU and was selected as the MSU College of Business's Alumni Fellow for 2016. She was chosen as MSU Beta Alpha Psi Alumnus of the Year in 2000.