Who We Are

“Andrew provides excellent service! He is very easy to work with.”

— James Alongi, MAAC Machinery

Learn More About Andrew Schmidt
Who We Are

“Barb is amazing in her knowledge and experience.”

— Longstanding Client

Learn More About Barbara Steinbach
What Our Clients Say

“Dugan & Lopatka wasn’t just a regular partner, they became a part of our family business.”

–Wisdom Worldwide Adhesives

Learn more about our work with Wisdom
Your Outsourced Accounting Experts

See the difference a good accounting team can make!

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Dugan & Lopatka Wealth Management

D & L Wealth Management offers all-encompassing services for our clients.

 Whether a veteran of success, or just starting to manage your portfolio, we can help you pursue your goals!

Learn more about D&L Wealth Management

In 2019, Dugan & Lopatka celebrates its 45th year as one of the largest accounting firms in the Chicago area according to Crain’s Chicago Business and the Daily Herald Business Ledger.  Located in the western suburbs, but serving all of Chicagoland, Dugan & Lopatka is the right choice for small and mid-sized closely-held businesses and nonprofit organizations.

Our services

What We Do

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By The numbers

D&L At A Glance

  • 45 Years in business
  • 36 Employees
  • 607 Years of experience
  • 5625 Local businesses served
Change moments

Serving Your Business Through Times of Transition.

In the life cycle of every company, from its start to when the owner(s) leave or sell the business, there are unique moments that challenge each business and its owners. It is during these unique Change Moments that the support of a strong CPA advisor and friend can be vital.

If one of these Change Moments is keeping you up at night, contact us to learn how we can help you through it. get in touch
Common Change Moments:
  • Changing Accounting Firms
  • Going for Bank Financing
  • Handling Fast Growth
  • Acquiring or Merging A Company
  • Selling or Exiting Your Company
The Dugan & Lopatka Difference

What Our Clients Say

"Dugan & Lopatka wasn’t just a regular partner, they became a part of our family business." Watch this brief video to learn more about the D&L and Wisdom Adhesives relationship, or click below for a deeper dive. Jeff Wisdom Former President, Wisdom Adhesives Worldwide

Click here for full video

"When reviewing CPA firm RFP's, Dugan & Lopatka scored so much higher than their competitors that we didn't interview other firms." Watch this video to learn more about the D&L and New Star Services relationship, or click below for a deeper dive. New Star Services Greg O'Brien, CFO

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articles of note

The Latest News & Information


R&D tax credit: Don’t leave money on the table

Many taxpayers do not realize that the research and development tax credit is available to businesses of all sizes in many lines of business, not just major corporations conducting tests in research laboratories. Read more


Cash flow: A central part of your business plan

One of the primary keys to your business’s success relies on how you handle the money flowing in and out of your business. There are practices you can incorporate to help you give your cash flow the attention it deserves. Read more

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