If Jim Sullivan is not on the golf course or spending time with his family, he is hard at work building his businesses and helping his community. Jim founded ATS Advisors in 1996 and has been steadily growing the business ever since. ATS Advisors is a full-service CPA firm. The company offers individual, business, non-profit, and estate tax preparation services.“I have known Jim for many years and he is the type of guy that is always available to help no matter the circumstance” (Greg WGCC)

James R. Sullivan, CPA is the founder and President of ATS Advisors, A Certified Public Accounting Firm. (ATS) Jim works with owners, controllers, CFOs, general management, directors and board committees to assist them in developing accounting and tax strategies and programs. As the President, he is an account manager for clients in many industries, including construction, law firms, manufacturing, finance, non-profit and healthcare, for assignments in all areas of taxations, strategic planning, mergers and acquisitions as well as accounting and audit.

Jim has over twenty years of experience in designing and implementing tax strategies and accounting management programs, for organizations of all sizes. His experience includes tax strategies and accounting program development, as well as extensive work with other accounting firms in the areas of governance, strategic and operational planning. He has managed and been involved with valuations and merger and acquisition deals of numerous companies of various sizes ranging from $500,000 in revenue up to $190,000,000 in revenue.

Prior to founding ATS, Jim Sullivan was a staff accountant at several CPA firms; Jim was also a CFO, controller and manager at various private companies. His prior experiences have given him exposure to various industries including, construction, consulting, IT staffing, software development, and environmental and emergency remediation services.

A recognized expert in federal as well as multi state taxation with a knack for putting the mind numbing complexities of the tax code into plain English;

Jim works closely with the University of Michigan and MICPA as an instructor in various tax and accounting topics. His continuing education classes and the University’s Tax Practitioner Institute have been attended by hundreds of participants throughout the State. He has spoken at tax and accounting conferences as well as specific industry conferences on a national basis.

Jim earned his Bachelor’s degree in accountancy from The University of Notre Dame, South Bend, Indiana. Jim is a licensed Certified Public Accountant in the State of Michigan. He is a member of the Michigan Association of CPA’s and the American Institute of CPA’s. He is also a veteran of the US Army having served with distinction in Saudi Arabia and Iraq during Operations Desert Shield and Desert Storm with the 101st Airborne Division, 187th Airborne Infantry Regimental Combat Team.


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