Partner with a Trusted Accountant in Oakbrook Terrace

Since 1974, Dugan + Lopatka CPAs has served businesses and nonprofits in Oakbrook Terrace and across the Chicagoland region. With a proactive approach and deep industry expertise, our business advisory firm helps our clients navigate complex challenges and achieve their business goals. Today, we provide a wide range of financial management solutions, from business advisory to tax management and more.

Keep reading to learn how D+L can help your business grow, succeed and prepare for the future.


A Full Range of Accounting Solutions, Customized to Your Business

Our goal is to help your business be more resilient, while helping your management team feel confident in their decisions.

We offer a flexible range of financial management services, tailored to your business needs. Our core solutions include tax preparation & compliance, auditing, reviews and compilations and accounting and business advisory solutions. We also provide specialized services, while helping our clients navigate mergers and acquisitions and other key change moments.

From basic bookkeeping to CFO-level services, D+L provides nearly all of our key services as outsourced accounting solutions. Highly flexible and scalable, outsourced accounting is a great way to boost your accounting capabilities or replace an in-house department. Learn more about D+L’s outsourced accounting solutions here.


Our Deep Industry Expertise Helps Us Better-Serve You

Our Certified Public Accountants have decades of collective industry experience. Working as a collaborative team, we leverage our diverse skills and knowledge to help you build your competitive advantage.

Over decades of service, D+L’s team has partnered with numerous clients in fields like:

  • Professional, Scientific, and Technical Services
  • Waste Management and Remediation Services
  • Administrative and Support
  • Construction
  • Accommodation and Food Services
  • Finance and Insurance

Service Area Map

As one of the top Oakbrook Terrace CPA firms, Dugan + Lopatka serves clients across the Chicagoland region. That includes the local zip code 60181.


Let’s Get Down to Business

Looking to partner with a CPA near Oakbrook Terrace? Contact our team today to learn how we can help you build a smarter, more resilient, more proactive business.