CPA in Naperville: Serving a Diverse & Thriving Community

Over a relatively short span, Naperville has grown from a quiet bedroom community to one of the fastest-growing Chicagoland cities. Located in the western suburbs in DuPage County, Naperville is both a great place to raise a family and a highly competitive yet supportive market for businesses. Learn more about Naperville here.

For nearly 50 years, Dugan + Lopatka CPAs has served a diverse group of businesses and nonprofit organizations in the Naperville area. Today, from our headquarters in nearby Warrenville, our accountants leverage decades of experience and local contacts to provide flexible financial-management solutions. We understand the challenges our Naperville clients face, and we help them make critical business decisions with confidence.

Keep scrolling to learn more about our core services and how we serve the Naperville community. Or contact us today to explore our financial management solutions.

Serving Naperville’s Top Industries

Looking for an accountant in Naperville, IL? D+L specializes in serving the community’s top industries, including healthcare, professional services, retail, accommodation & food services, and education.

To date, our firm has served more than 5,000 businesses and nonprofits, many of them in Naperville and surrounding communities.


Supporting the Communities We Serve

Naperville’s businesses and nonprofit organizations work together to support one another and create an environment where everyone can flourish. At D+L, we’re proud to be part of that tradition.

In addition to serving numerous businesses and nonprofits in Naperville, D+L is involved in several local organizations and events.

  • Community Involvement in Naperville
    • Girl Scouts of DuPage County
    • Knox Presbyterian Church
    • Naperville Area Chamber of Commerce
    • Naperville Area Humane Society
    • Naperville Exchange Club
    • Naperville Park District
    • Naperville Public Libraries
    • Naperville Ribfest

Flexible Financial Services for Naperville Businesses

Looking for a Naperville tax accountant or Naperville CPA? As a trusted CPA firm in Naperville, IL, D+L provides a wide range of tax and accounting services. Our key services include:


Employing Talent from the Naperville Community

One of the ways we support the Naperville community is by employing local talent. Over our decades of service, we have employed CPAs from Naperville’s North Central College and other institutions in surrounding communities.

Today, D+L provides a flexible and balanced working environment where employee health and wellness are the top priority. Our office was featured in Choose DuPage’s Healthiest Workplaces: 2021 for its sleek, modern design, as well as amenities like an on-site fitness center, coffee bar and advanced air-filtration system.

If you’re looking for a balanced career with flexible PTO and opportunities for advancement, head to our careers page.


Service Area Map

Dugan + Lopatka CPAs serves all of the Chicagoland region and beyond. That includes Naperville zip codes 60440, 60490, 60540, 60563, 60564, 60565, 60566 and 60567, and all others.


Ready to get in touch? Contact us today.