Newkirk & Associates, Inc. traces its roots to services offered by Jeff and Marcia Newkirk in the early 1980’s in their home.

After several years of preparing tax returns and providing accounting services as a side job the business had grown enough to become Marcia’s full time job. Marcia met with clients in her home in Plano for many years, first in a bedroom, then in the finished basement, and then in a converted 2 car garage as the business grew. In 2005 she incorporated the business creating Newkirk & Associates, Inc. and moved the office out of her home to the current location in downtown Plano.

In 2014 Bill Newkirk joined Newkirk & Associates, Inc. Bill previously worked at 2 top 50 CPA firms prior to working at Newkirk & Associates, Inc. He is seeking to increase business through adding personal and small business clients. In addition to this he brought auditing experience to Newkirk and Associates and began performing audits of government and nonprofit organizations.

Newkirk & Associates, Inc. participates in the Illinois CPA Society Peer Review Program. A firm participating in the Peer Review Program must have an independent review of its accounting and auditing practice every three years. In 2015 Newkirk & Associates, Inc. underwent a peer review and received a rating of pass (highest possible) which indicates the firm meets the accounting profession’s high standards of quality and professionalism.

Newkirk & Associates, Inc. continues to grow and is always accepting new clients. If you are considering Newkirk & Associates, Inc. give Bill a call or schedule an appointment to see how we can best meet your needs.

Our Team

Bill Newkirk


(630) 552-1040

Bill was born and raised in Plano and has been around Newkirk & Associates for his entire life. He graduated from Plano High School as the valedictorian of his class. He went on to Rockford University and earned a Bachelor’s Degree in Accounting and Master’s Degree in Business Administration (MBA). He is a licensed Certified Public Accounting (CPA).

Throughout college Bill completed internships at a registered investment advisor in Rockford, a small CPA firm in Stillman Valley, and a top 50 accounting firm (Rockford). Following graduation Bill started as an associate at a different top 50 accounting firm where he quickly became a senior associate and gained valuable experience auditing governmental entities. Bill purchased Newkirk & Associates, Inc. from Marcia on January 1, 2016.

Bill is well versed in personal and business income tax, payroll tax, and sales tax for small businesses. He attends the University of Illinois Tax School annually. He also manages all of the government audit engagements at Newkirk & Associates, Inc. He is a member of the Illinois CPA Society. Bill has also taught classes at the Illinois Municipal Treasurer’s Association Institute.

Outside of work, Bill enjoys spending time with his wife, Susie and sons Zack and Caleb. They enjoy going to the zoo and traveling as a family. Bill is also a volunteer firefighter at Lynn-Scott-Rock Fire District.

Marcia Newkirk

(630) 552-1040

Marcia was born and raised in Naperville and is the youngest of 12 children. She attended and graduated from Naperville North High School. Following high school she went to Benedictine University in Lisle where she graduated with a Bachelor’s Degree in Accounting. Marcia is a Certified Public Accountant (CPA) and a member of the Illinois CPA Society. During college she started working at a public accounting firm in Naperville where she gained valuable experience performing tax and accounting services for individuals and small businesses. Marcia started Newkirk & Associates and enjoyed the flexibility of raising her three sons, Adam, Bill, and Tim while having her office at home.

Marcia specializes in providing tax and accounting service to individuals and small businesses. She attends the University of Illinois Tax School every year (and has for about 30 years). She has also gained experience and serves as a quality control partner on government audits. She has served as clerk of a local fire district for more than 20 years.

Marcia is phasing into retirement and is trying to spend less time at the office. She enjoys traveling with her husband Jeff and spending time at their vacation home in northern Wisconsin. She also loves playing with her grandsons whenever she can.