Proud to Serve the People
That Serve the Public.

There are Over 1 Billion Reasons to Trust Us.

No one is more dedicated to helping Michigan governments meet the needs of their local communities than the team at Maner Costerisan. With budgets tight, resources limited and talent in short supply, we’re able to step in as a resource any time and anywhere we’re needed. We’ve audited more than 1.2 billion dollars in federal funds and are committed to helping local governments stay compliant. Partnering with us gives small and large governments the strength of proven financial expertise.

The Maner team is extremely knowledgeable in the field and is always willing to answer questions. Their customer service is exemplary across the board.

Tyler Dotson, City of Watervliet

We’ve had nothing but positive interactions with everyone we work with at Maner.

Kelly Bales, Greater Lapeer Transportation Authority

The audit team is very professional, easy and great to work with. They are always available throughout the year if I have questions or need advice.

Terri Taylor, Sanilac County Road Commission

We’ve worked with the Maner team for many years; they are a wealth of information, not only at the yearly audit, but ANY TIME I need advice. I’ve recommended Maner to all that ask me who our current auditing firm is.

Sandy Griffin, Oceana County Road commission

The Team You Turn to When You’ve Earned the Public’s Trust.

Our dedicated Government team provides day-to-day commitment from partner level members of our firm. In fact, we don’t take the term advisor lightly; we’ll bridge the gap between your available resources and smart, data-driven decisions that the future of your municipality hangs on. We’ll help you lower costs, minimize disruptions to daily operations and maximize the potential of your precious financial resources.

Deep Relationships

Commitment to Quality

Industry Expertise

Maner Team Expert

Bill Tucker, CPA, Principal, Director

Bill brings more than 22 years of experience specializing in government and nonprofit auditing and consulting to Maner Costerisan. A member of the firm’s Board of Directors, Bill leads Maner’s Government team and is a partner in the Audit department. Since joining Maner through a merger with Stevens, Kirinovic & Tucker P.C. (SKT) in early 2019, he’s helped spearhead tremendous growth throughout the government division, always looking for innovative solutions to help municipalities and government entities achieve their goals.

A strong presenter and quick study, Bill is committed to sharing his knowledge and insight on all things government audit and accounting with his clients and teammates. Bill consistently provides valuable contributions in the form of thought leadership articles on Maner’s website and delivers engaging presentations at industry conferences and committees. Furthermore, he actively takes charge of keeping the entire government team well-informed about the constantly evolving requirements for government entities of various scales.

Bill discovered his love for accounting after taking a single accounting class at Michigan State University. His passion for the profession continues to grow, as he’s able to offer clients new solutions to complex problems. Accounting offers him the opportunity to work in a diverse and dynamic industry while helping clients improve their operations and meet their strategic objectives.

In his free time, Bill enjoys active hobbies, including hockey, golf, and skiing. He and his wife, Michele, live in DeWitt, Michigan, with their two children, Will and Josalin, and their dog, Stanley Cup.

Growing up, I was considered a leader due to the hard work and dedication I put into activities. Hard work set up a good foundation of what has driven my success.

When I joined the parenthood rank, it emphasized never knowing what tomorrow can bring and always being 100% prepared for the next day. Making the most out of every day and accomplishing the task at hand changed the way I work every day and drove my success.

Years of Experience



American Institute of Certified Public Accountants (AICPA)

Michigan Association of Certified Public Accountants (MICPA)

Governmental Finance Officers Association


Certified Public Accountant (CPA) – Michigan

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Relevant Services

Outsourced Accounting Solutions

Outsourced Accounting Solutions

Gain efficiencies and reduce stress by adding a team of experts instead of a dedicated staff.

Defined Benefit Plan Management

Defined Benefit Plan Management

We can help you manage your defined benefits offerings while helping employees achieve their financial goals.

Business Accounting Software

Business Accounting Software

Leveraging cloud-based technology, we can help you create a seamless system that simplifies complex processes, improves overall efficiency and saves time and money.

Audit & Assurance

Audit & Assurance

Complete an independent review of financial statements and provide a detailed report that confirms the reliability of your data.

CFO Advisory Services

CFO Advisory Services

Any size municipality now has access to CFO insight, data, expertise and guidance.

Reporting & KPIs

Reporting & KPIs

Transform your decision-making with KPIs that accurately pinpoint opportunity and tell a more complete story of your government entity or municipality.



Properly incorporating technology is important to every business. Our technical knowledge and expertise can help you get the most out of your investments.

Financial Statement & Audit Preparation

Financial Statement & Audit Preparation

Bringing deep technical and compliance knowledge to make sure every job is set up for success.


Government Clients Across Michigan


Single Audits Performed Annually


Active Engagements in Key State Government Committees & Boards


Dedicated Government Industry Experts

Industry Insights

Info Sheet

Your Niche Is Our Specialty.

When it comes to your unique financial needs, Maner Costerisan has the experts, tools, and services to stay focused on your next move.

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