Image of Heather  S. Acker

Heather S. Acker

Partner, CPA
608 240 2374

Heather Acker, Assurance Professional Practice Leader, has been with Baker Tilly since 1997. She is responsible for the quality oversight of the public sector assurance practice of the firm. Throughout her career, she has specialized in serving the needs of state and local government clients. Heather also serves as Baker Tilly’s Central Region Assurance Leader. In this role, she has responsibility for advancing the firm’s assurance practice for the future.


  • ­Leader in Baker Tilly’s Professional Practice Group
  • Chair of the Baker Tilly Assurance Innovation Committee
  • Partner of the financial and single audits of numerous governments
  • Provides technical assistance to local governments in preparing Comprehensive Annual Financial Reports
  • Provides Tax Incremental Financing (TIF), Business Improvement District (BID), and Special Service Area (SSA) auditing, reporting and consulting services
  • ­Presents audit reports to local government boards and committees
  • ­Provides GASB strategic planning and implementation services to clients
  • ­Provides guidance on accounting policies and procedures to improve the operation of the accounting function and strengthen internal controls
  • ­Oversees the Baker Tilly Public Sector Assurance Committee
  • ­Leads the Baker Tilly Single Audit Committee
  • ­Oversees firmwide public sector and single audit training and audit methodology updates
  • ­Performs peer reviews
  • ­Licensed CPA in Illinois and Wisconsin


  • ­American Institute of Certified Public Accountants (AICPA)
  • ­Chair of the AICPA State and Local Government Expert Panel (2016‒present)
  • ­AICPA Government Audit Quality Center (GAQC) Executive Committee (2012‒2015)
  • ­AICPA State and Local Government Expert Panel (2009‒2012 and 2015‒present)
  • ­AICPA Peer Review oversight program
  • ­GASB Tribal Government Accounting Workshop Group (TGAWG) (2018‒present)
  • ­Government Finance Officers Association (GFOA)
  • ­GFOA Special Report Review Committee
  • ­Wisconsin Institute of Certified Public Accountants (WICPA)
  • ­Wisconsin Government Finance Officers Association (WGFOA)
  • ­Illinois Government Finance Officers Association (IGFOA)
  • Regular speaker at national and regional industry conferences
  • ­Authors published articles on municipal accounting issues
  • Recognized contributor to AICPA publications


University of Wisconsin–Madison
Bachelor of Business Administration in Accounting

Continuing Education

  • AICPA national annual Governmental and Nonprofit Training Program (GNTP), speaker
  • AICPA national Governmental Accounting and Auditing Conference (GAAC), speaker
  • Government Financial Officers Association (GFOA) national conferences, speaker
  • AICPA Governmental Audit Quality Center (GAQC) annual webcast updates, speaker
  • AICPA “Single Audit Roundtable” sessions
  • Generally Accepted Government Auditing Standards (Yellow Book) training
  • Accounting and auditing updates (Baker Tilly)
  • Public sector single audit training (Baker Tilly)
  • “IT Risk Assessment Standards (RAS) Training for Auditors” (Baker Tilly)
  • “HIPAA Privacy and Security for Professional Service Providers” (Baker Tilly)
  • “Independence: Historical Insights and Today’s Rules”
  • “Common Fraud Schemes in Government” (Baker Tilly)