Chicago & Illinois
Business Valuation,
Forensic Accounting &
Litigation Support

GMC & Company provides objective financial analysis and expert support for attorneys, business owners, CPAs, and financial advisors in Chicago, the surrounding suburbs, and throughout Illinois.

We help clients resolve complex business and financial issues involving value, income, damages, ownership interests, and financial activity so they can make informed decisions.

Financial Expertise for Illinois Matters


Clear, well-documented analysis and expert support for litigation and dispute resolution.

For Attorneys

Objective valuations and financial insight to support transactions, planning, and decision making.

For Business Owners

Reliable financial analysis and collaboration on tax, transaction, and planning matters

For CPAs & Advisors

Our opinions are objective, defensible, and based on facts, data, and sound methodology

Objective & Unbiased

Trusted Experience

Years of experience providing high-quality analysis that stands up to scrutiny

Services Available to Illinois Matters

Business Valuation

Valuations of closely held businesses. professional practices, and ownership interests.

Divorce Valuation

Business valuation and income analysis for marital dissolution involving business owners and professional practices.


Litigation Support & Expert Testimony

Expert reports, deposition support, trial testimony, and consulting for attorneys

Shareholder & Partner Disputes

Valuation and forensic accounting for ownership disputes, buyouts, and partner separations.

Forensic Accounting

Investigations and analysis of financial records, income, transactions, and financial irregularities.

Estate, Gift & Tax Valuation

Valuation analysis for estate planning, gift tax reporting. business transfers, and tax compliance.

Economic Damages & Lost Profits

Analysis of lost profits, business interruption, and other economic damages in commercial disputes

Buy-Sell Agreement Valuation

Valuation support for buy-sell agreements, redemption events, and business succession planning.

Serving Chicago Communities Across Illinois


We serve clients in Chicago and surrounding areas, including:

  • North Shore: Northbrook, Evanston, Highland Park, Glenview

  • Northwest Suburbs: Schaumburg, Arlington Heights, Palatine

  • Western Suburbs: Oak Brook, Naperville, Wheaton

  • South Suburbs: Orland Park, Tinley Park, Frankfort

  • Cook County, DuPage County, Lake County, Will County, Kane County, and beyond.

Why Clients Choose GMC & Company

Objective Analysis

Unbiased opinions based on facts, data, and proven methodologies.

Senior-Level Attention

Experienced professionals involved in every engagement.


Clear Communication

Complex issues explained in clear, understandable language.

Built for Scrutiny

Our work is thorough, well-documented, and court-ready.

Longstanding Trust

Decades of trusted service to attorneys, business, and professionals.