Our Team

Maner Costerisan Tim Adams


CPA, Principal, Director

Small & Midsize Businesses
DEPARTMENTS: ConsultingTax

Tim Adams, CPA, Principal, Director

Tim leads Maner’s Cannabis Services team, building and fostering tremendous growth in an evolving and highly-regulated space. Driven by his desire to help clients by listening and offering solutions that fit their unique issues, Tim has built a career learning and mastering new skillsets – with the firm’s Cannabis team as his most recent endeavor. Additionally, Tim is a member of Maner’s Board of Directors, and previously served as the head of the firm’s Tax department.

With more than 35 years of experience in the accounting and advisory industry, Tim has a tremendous amount of expertise advising clients of all shapes and sizes. His daily focus lies in providing tax consulting services for small and midsize, family-owned businesses, consulting on mergers and acquisitions and representation for income and sales & use tax audits.

Beyond his work with clients, Tim has a passion for developing and supporting Maner staff. His team-first approach and openness to new ideas serves him well in his role, promoting growth and development of staff early in their careers and the Cannabis team alike. Tim’s expertise, combined with his natural ability for storytelling and connecting with people, has made him a tremendous asset to Maner during his three-decades-plus career at the firm.

A big fan of golf, Michigan State football and Spartan basketball, Tim has a passion for historical facts and places. Born and raised in Jackson, Michigan, Tim and his wife, Lori, reside in Delta Township. The pair are parents of three children.

Listening is a critical skill that greatly contributes to the success of our clients. I always try to listen before I speak… It helps ensure I have all the information to properly assess the client’s situation and needs, which allows me to provide practical, common sense solutions.

Years of Experience



American Institute of Certified Public Accountants (AICPA)

Michigan Association of Certified Public Accountants (MICPA)

Michigan Cannabis Industry Association

Rotary Club of Lansing

Northern Michigan University Indoor Agriculture and Plant Wellness Advisory Council


Certified Public Accountant (CPA)