Accounting Firm

Dugan & Lopatka

Chicago CPA firm serving private mid-sized businesses and nonprofits with audit, tax and advisory work

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TrustList summary

Dugan & Lopatka, also written D+L, is a certified public accounting firm serving the Chicago area. It has been operating for about fifty years and works mainly with private, mid-sized companies and nonprofit organisations. The firm pays particular attention to owners going through transitions.

Products and services

Audit services, reviews and compilations: assurance work for companies and benefit plans.
Outsourced accounting: running accounting functions for clients.
Tax advisory, planning and compliance: year-round tax support.
Mergers and acquisitions: help when buying, merging or selling a company.

Clients

Clients are private middle-market businesses, family-owned firms and nonprofits, including those in construction, transportation and logistics.

Key facts

Based in: Chicago, Illinois, USA
Experience: About 52 years in business
Focus: Private middle-market businesses and nonprofits

Summary written by TrustList from the business's own published information, Sep 2026.

Categories & features

Rankings

Dugan & Lopatka is ranked on 3 TrustList rankings: #2 on 1, #5 on 1 and #10 on 1.

Every ranking orders its listings by their reviews, how complete the profile is and the Trust Score. Dugan & Lopatka has no reviews yet and 3 of the 10 profile details we look for. Where no listing on a page has been reviewed, the order follows the profiles alone.

Accounting firm · 3 rankings

#2of 10
Chicago
It is the only one of the 10 here listing retail and one of 3 here listing manufacturing.
Its profile: “Dugan & Lopatka, also written D+L, is a certified public accounting firm serving the Chicago area.”
Of the 10 here, 11 also cover tax and 10 also cover accounting; 2 also work in Michigan and 2 also work in Lincoln.
Behind FGMK, ahead of Cendrowski Corporate Advisors.
#5of 26
Illinois
It is one of 4 here listing real estate and one of 5 here listing business services.
Its profile: “- Based in: Chicago, Illinois, USA - Experience: About 52 years in business - Focus: Private middle-market businesses and nonprofits Dugan & Lopatka, also written D+L, is a certified public accounting firm serving the Chicago area.”
Of the 26 here, 7 also cover medical and 6 also cover insurance; 4 also work in Indiana and 2 also work in New York.
Behind Ginoli & Company, ahead of Accounting Freedom, Ltd..
#10of 235
Non profit
It is one of 19 here listing medical.
Of the top 72 here, 22 also cover financial services and 22 also cover real estate; 6 also work in California and 4 also work in Washington.
Behind Hills Renaut Homen & Hughes, ahead of Brown Armstrong Certified Public Accountants.