We are a full-service Public Accounting Firm in Chicagoland, specializing in middle-market, private companies and nonprofit organizations. For 50 years, our team of financial experts has brought together a wide range of skills and technologies to provide comprehensive service for our clients. That’s Dugan + Lopatka. That’s Accounting for What Matters.

the power of people

Relationships are the Bottom Line

We believe that the success of any organization ultimately comes down to people and relationships. That’s why our first priority is always to build and grow our relationship with you, our client. With mutual trust and understanding, we can help you develop the right strategies, achieve your goals, and communicate results with integrity and clarity—and you can feel confident that your business is in capable hands.

Our financial expertise and wide range of capabilities are valuable tools. But our people and the relationships we build are what sets Dugan + Lopatka apart.

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Industry-Specific Expertise

We Understand the Challenges & Opportunities of Your Industry

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Resources to serve you

Strategic Partners

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professional Associations

Our Memberships

Due to our many memberships & affiliations, we can provide a comprehensive range of services for all your needs.

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profiles & affiliations


Crain’s Chicago Business and the Daily Herald Business Ledger consistently rank D+L as one of the top accounting firms in the Chicagoland area.

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our community involvement

Dugan + Lopatka Gives Back

At D+L, we believe that a business is part of a community and as such, should act like a good citizen. Our employees convert our beliefs into active participation in the communities in which we live. Our involvement comes in the forms of volunteer time, pro bono tax and accounting services, and financial sponsorships of organizations and community events. Below is just a partial list of the organizations we have contributed our time and financial assistance to.

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Community Involvement

Accounting for What Matters.

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