Jonathan is a Principal with over 25 years of experience in public accounting, as well as in law enforcement, where he served as a special agent and supervisor with IRS Criminal Investigation.
Widely recognized as an expert in investigating complex cross-border financial crime schemes, Jonathan specializes in uncovering methods used to evade detection by law enforcement and regulators. His extensive investigative experience spans both domestic and international cases, and he has testified in numerous criminal jury trials, utilizing sophisticated indirect methods of proof to present his findings.
Throughout his career, Jonathan has successfully led teams of agents and analysts in high-profile investigations involving tax fraud, money laundering, narcotics, public corruption, embezzlement, international tax schemes, terrorism and national security matters. As the IRS-CI team lead for the Professional Enabler Group within the Joint Chiefs of Global Tax Enforcement, he collaborated with foreign tax authorities, law enforcement, and regulators to share intelligence and disrupt offshore service providers, promoters and financial institutions facilitating global financial crimes and evading sanctions.
Learn more about my professional experience and how I spend my time outside the firm.
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Jonathan has received multiple awards from the U.S. Attorney’s Office for his investigative accomplishments and was named the Special Agent of the Year of the IRS Criminal Investigation Philadelphia Field Office.
Jonathan has presented to global audiences of tax professionals, law enforcement, prosecutors, bankers and financial professionals, and regulators on a variety of topics pertaining to the fight against global financial crime.
The line between tax auditors policing mere civil infractions and investigators pursuing serious tax crimes is beginning to blur in the latest reorganization at the top of the Internal Revenue Service. Jarod Koopman, a long-time and well-known criminal investigator, assumed the role of Chief Compliance Officer in October 2025, and, under the most recent shake-up,…
Jessica Hollobaugh, Partner and Market Leader, Forensics, Investigations, and White-Collar Criminal Defense, Jonathan Schnatz, Principal Forensics, Investigations, and White-Collar Criminal Defense, and Matthew Walsh, Partner and Market Leader, COVID-19 Financial Assistance Services were featured on Fox Rothschild’s Podcast Series: The Presumption of Innocence. Episode 1: The Anatomy of a PPP Fraud Investigation Episode 20: Pitfalls…
I retired only a few weeks ago after 25 years as a special agent with IRS Criminal Investigation, and have lost count of the number of texts I received containing news stories about IRS-CI special agents being assigned to conduct immigration enforcement. This, along with reports of reduced funding and staffing, make this an opportune…