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Financial
Reporting

In today’s dynamic business environment, involving complex business structures and transactions, the frequent changes in…

Tax

The complex tax issues facing businesses today demand skilled advisors with significant tax expertise and…

Advisory

FGMK’s Advisory Practice has the expertise to assist your business across all functional processes, people…

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Controls

FGMK stands ready to help organizations proactively develop their security strategy and mitigate the risk…

News & Thought Leadership

Thought Leadership | February 02, 2026

Fifth Circuit Rejects Tax Court’s “Functional Analysis” Test in Sirius Solutions​

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Providing assurance, tax and advisory services to privately held businesses, global public companies, entrepreneurs, high-net-worth individuals and not-for-profit organizations. FGMK is among the largest accounting firms in Chicago and one of the top ranked accounting firms in the United States.

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