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John W. Haag Sr., CPA/ABV, CFF, CVA

Managing Principal

CPAs & Advisors

John W. Haag Sr. is the Managing Principal of the firm’s Midland office. He is a member of the firm’s Business Valuation and Litigation Support Services Group, the Tax Services Group, and Yeo & Yeo’s Career Advocacy team. He joined the firm in 2002.

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    • Business valuation and litigation support services for privately owned businesses
    • Preparation of individual and corporate income tax returns and financial statements
    • Preparation of trust and not-for-profit tax returns, including foundations
    • Managerial consulting, including designing and implementing accounting systems and internal controls
    • Consulting related to new business start-ups, corporate restructuring and succession planning

Professional Certifications and Education

    • Certified Public Accountant (CPA)
    • Accredited in Business Valuation (ABV)
    • Certified Valuation Analyst (CVA)
    • Certified in Financial Forensics (CFF)
    • Eastern Michigan University, Bachelor of Business Administration in Accounting
    • Eastern Michigan University, Master of Science in Accounting

Professional Membership

    • National Association of Certified Valuators and Analysts – President of Michigan Chapter
    • American Institute of Certified Public Accountants
    • Michigan Association of Certified Public Accountants
    • Michigan Association of Certified Public Accountants Litigation and Business Valuation Task Force
    • AICPA Forensic and Valuation Services Section


    • Presented seminar, Key Ingredients to Success for Entrepreneurs
    • Published articles in the firm’s The Advocate and The Leading Edge client newsletters on business valuations, internal controls and fraud
    • Presented various seminars on tax planning, business valuation standards, and corporate fraud to attorneys and local service clubs
    • Professional panelist at QuickBooks training seminars
    • Instructor for firm’s internal corporate income tax classes
    • Podcast: TCJA and Year 2 of Tax Reform, February 2020
    • Podcast: A Breakdown of the Paycheck Protection Program, August 2020
    • Podcast: Presidential Candidate Tax Platforms, October 2020

Community Involvement

    • Midland Noon Rotary Club, Past President
    • Camp Fish Tales, Treasurer
    • Midland Rotary Foundation, Board Member
    • Mid Michigan Multisport Club, President
    • Midland Community Foundation, Past Grant Committee Member
    • United Way of Midland County, Past Community Investment Panelist and Loaned Executive
    • Midland Exchange Club, Past President
    • Midland MyPros Steering Committee, Past Chair
    • Saginaw Rotary Club, Sunrise, former Treasurer
    • Plymouth Symphony Orchestra, former Accounting Director
    • Junior Achievement of Northeast Michigan, Instructor
    • Leadership Midland Alumni
    • Midland Experimental Aircraft Association, Past Treasurer


    • National Association of Certified Valuators and Analysts / CTI “Forty Under 40” honoree, June 2014
    • Thomas J. Thompson Achievement Award (2007) honoring one Yeo & Yeo employee each year
    • Molitor International’s 1000 Leaders Program, graduate