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Accounting Firm

Dugan & Lopatka

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

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About Dugan & Lopatka

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

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

Categories & features

Rankings

As of 2026-10-09. Organic ranks only; sponsored placements are never ranks.

What the business tells TrustList

Founded
1974 (52 years) evidence sent

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