TRUSTED MICHIGAN CPAs SINCE 1997

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About ATS

Founded on March 11, 1997, ATS Advisors established its foundation as a full-service CPA firm dedicated to delivering high-quality accounting, tax, and advisory services. Over the years, the firm has grown steadily and earned trust by helping clients navigate complex tax laws, make informed strategic business decisions, and plan effectively for their financial future. From its early beginnings to its expansion into multiple locations, ATS Advisors has built a reputation for integrity, expertise, and personalized service.

Our core Values

1

Integrity

2

Trust

3

Teamwork

We are driven by the core values of integrity, trust, and teamwork, principles we believe are essential for long-term success. These values shape the way we work together and the relationships we build with our clients. By valuing each team member’s unique expertise and fostering collaboration, we strive to deliver dependable, high-quality service. Our mission is to foster a culture of excellence and accountability in everything we do, so our clients can feel confident in the numbers and the people behind them.

ATS Locations

ATS CPAs main office with company sign for tax and financial consulting

Headquarters
Plymouth

875 S Main St.
Plymouth, MI 48170

Phone: (734) 454-4100
Fax: (734) 454-1300


Exterior of ATS CPAs building providing business tax and payroll services

Royal Oak

2310 E 11 Mile Road
Royal Oak, MI 48067

Phone: (248) 399-7331
Fax: (248) 414-3848


Front view of ATS CPAs location with signage for estate and trust tax planning

Allen Park

7915 Allen Road
Allen Park, MI 48101

Phone: (313) 388-7180
Fax: (313) 388-3216


Office building with ATS CPAs sign highlighting professional CPA services

Grayling

PO Box 627
Grayling, MI 49738

Phone: (989) 348-4055
Fax: (989) 348-6451


Downtown ATS CPAs office entrance for tax and accounting services