The firm
Three generations of one practice.
Jacobs & Newmark, P.C. is an independent certified public accounting firm for closely-held businesses across the Chicago area, with offices in Wheaton and Buffalo Grove, Illinois.
Irvin Jacobs, CPA was practicing in Chicago when his son Wayne passed the CPA exam on his first sitting in 1978. Wayne joined him in 1981.
In 1988 Edward Newmark, then a manager at a mid-sized Chicago firm, joined them, and Jacobs & Newmark, P.C. was formed. The intention was a practice that could handle everything an owner-managed business needed in one place: the books, the payroll, the returns, and the planning that connects them.
That is still what the firm does, from two offices in Wheaton and Buffalo Grove. Anthony Di John and Michael Feuerstein are the partners today. Wayne and Ed are still here. So are clients from 1988.
We work with small, medium, and large independent businesses across retail, wholesale and distribution, construction, manufacturing, professional services, real estate, and veterinary medicine. What they have in common is not an industry. It is that the owner is also the operator, and the decisions land on one desk.
How we got here
- 1978
- Wayne I. Jacobs passes the CPA exam on his first sitting
- Drake University · University of Colorado
- 1981
- Wayne joins his father, Irvin Jacobs, CPA, in practice
- Chicago
- 1988
- Edward P. Newmark joins. Jacobs & Newmark, P.C. is formed
- Founding partners
- 2012
- Michele Valenta joins as firm administrator
- From veterinary practice management
- 2020
- John Whiston, CPA joins the firm
- Assurance · CFMA
- Today
- Anthony Di John and Michael Feuerstein are the partners
- Wayne and Ed are still here
1988
The year we started
By Irvin Jacobs, Wayne Jacobs, and Ed Newmark
2
Illinois offices
Wheaton, DuPage County · Buffalo Grove, Lake County
30+
Longest client relationships
In their own words, on the record
5
Industries we specialise in
Veterinary, broker-dealer, construction, real estate, closely-held
Ownership
The same firm, and the same accountant, next year.
Jacobs & Newmark has been independently owned since it was formed in 1988, and it is not for sale. In practice that means the accountant who learns your business keeps it, and you are not starting over with someone new every few years.
Wayne Jacobs joined his father's practice in 1981. Ed Newmark joined in 1988. Both are still here.
Credentials & affiliations
Licensed, and members of the bodies that set the standards.
- American Institute of Certified Public Accountants
- Illinois CPA Society
- Intuit QuickBooks Certified ProAdvisor
- Construction Financial Management Association
- Veterinary Hospital Managers Association
- FINRA Series 27 & Series 99
All Jacobs & Newmark accountants holding the CPA designation are licensed in the State of Illinois. Individual memberships and licenses are listed on each person’s page.
Clients on the record
Many of the businesses that engaged us in 1988 are still clients.
“We have been with Jacobs and Newmark for over 30 years. Our success is directly related to our relationship with Jacobs and Newmark. They know us and they care about us and it shows in their work. I would recommend Jacobs and Newmark to anyone who is looking for an accounting firm that offers personalized service. They can help through the ups and downs of being in business over the long haul.”
“Ed Newmark is one of our most trusted advisors and a team member. He does a professional job preparing our financial statements and tax planning for our 4 separate corporations. We respect Ed for his sound, practical advice on issues from buying or lease a piece of equipment to relocating.”
“Whether it's handling a bank, IRS or union audit, balancing the monthly journals, filing quarterly taxes or giving sound financial advice, and explaining it all in terms we can understand, Jacobs & Newmark accounting services have been an essential asset to the success and growth of our business for more than 30 years.”
Where we are
Two Illinois offices.
DuPage County
Wheaton, Illinois
106 E Liberty Dr., Suite 201Wheaton, IL 60187
Serving Wheaton, Glen Ellyn, Naperville, Downers Grove, Lombard and the surrounding area.
Lake County
Buffalo Grove, Illinois
100 Lexington Dr., Suite 210Buffalo Grove, IL 60089
Serving Buffalo Grove, Arlington Heights, Deerfield, Northbrook, Palatine and the surrounding area.
The people
Who you will actually work with.

Tell us about the business.
A first conversation is about what you run, how the books are handled now, and what prompted you to look. If we are the right firm we will say so, and if we are not we will say that too.
- DuPage County
- Wheaton, IL
106 E Liberty Dr., Suite 201 - Lake County
- Buffalo Grove, IL
100 Lexington Dr., Suite 210 - Hours
- Monday – Friday, 9:00am – 5:00pm







