Skip to the main content.

Accounting & Advisory Services

 Accounting and advisory services to help businesses in northern Illinois thrive.


847.395.6000 |

1555 Main Street | Antioch IL 60002

We don't just work here. We live here, too.

It’s our absolute pleasure for Kaizen CPAs to serve the people and small businesses of Antioch, Illinois, with CPA services for Lake County and the surrounding areas. In 1972, we opened our first CPA office in Antioch, but our relationship with the businesses there goes back even further. Since 1964, we’ve worked with folks to provide CPA services in Antioch, Lake Villa, Libertyville, Fox Lake, Spring Grove, Waukegan, and more.

For small businesses, it’s more than just business growth. It’s the relationships that make a business great. It’s about building a community together. Nowhere is that more evident than Antioch, a great town with so many burgeoning small businesses. 

smtown smb-confident


auto repair lift


You don't have to do it all alone.

Most small business owners in Kenosha have to learn their craft, trade, and profession “on the job.” In other words, they learned from working in the business. Often, with small businesses, the owner is the CEO, CFO, HR chief, sales team, and custodian. Many small business owners don’t know how to minimize their taxes or how to best structure their companies – and many don’t handle cash flow well either.

We provide folks in the Kenosha area with proactive advice to keep them informed and give them the best chance of success. We partner with you to keep you inspired along your journey. Our clients in Kenosha tell us our education and guidance provide the kind of confidence that allows them to sleep better at night. That’s priceless.


The Simple Steps for Better Accounting Services

Circle icon 1

Talk With Us

Tell us your story—where you've been, where you are now, and the direction you want to go with your business.

Circle icon 2

Design a Plan

Work side-by-side with our experienced CPAs and advisors to create a customized plan for your success.

Circle icon 3

Decisions that Win

Manage your business with confidence and make decisions to take your business from surviving to thriving.

It has been a wonderful experience since the beginning. We feel that we have a true partnership. They care about the well-being of our business and keep us up to date on all changes that affect us. Communicating with them is excellent. They are always super responsive and always get our work done in a timely manner. The reporting is superb, and every person that we have dealt with has been great.
Kris January
Omni Salon & Spa
Kelley Landscape and Patio have been using Kaizen CPAs for many years. It's been great having a partner that knows all the ins and outs of Federal and State tax laws. They help me strategize and plan capital expenditures, handle my payroll, file my taxes, and handle all the annoying stuff so I can focus on designing and building awesome backyards. Thanks, Eric for all your help and support!
John Kelley
Kelley Landscape

Subscribe to our newsletter

Get ready to receive valuable and practical tips and information to help you manage your finances and skyrocket your business growth.

Clay Hamlin

Clay Hamlin

Clay grew up in Antioch, Illinois, and in a sense, never left. After graduating from Notre Dame with a degree in philosophy and literature and earning his master’s degree in taxation from DePaul University, in 1996 he joined the firm James C. Hamlin & Co., Inc., founded by his parents...

Eric Joern-1

Eric Joern

Eric is a graduate of Columbia College of Missouri with a degree in accounting and joined the firm in 2013. He is a licensed CPA and a key business advisor at Kaizen. Coming from generations of entrepreneurs, small business is in his blood, he has spent his working career

Pierre Langlois

Pierre Langlois

Pierre graduated with a degree in accounting from Northeastern University in Boston. Licensed in Wisconsin and Illinois, Pierre has been with the firm since 2003 (he says it seems like only yesterday) and credits his success to having a great team and really getting to know and understand his clients. Pierre has served on various boards of directors...

Kathy Brinkman

Kathy Brinkman

A life-long area resident, Kathy graduated from Illinois Wesleyan University with a degree in accounting. She started her career working at Arthur Andersen for 13 years in their Financial Consulting Services division focused on large litigation and dispute engagements. Kathy co-founded and ran a local 501c3 charity benefiting Chicagoland... 

We want to help
you grow your business.

Contact us today if you’re in need of accounting, tax planning, payroll services – or just need some advice.