Atty. Sharon L. McCarthy

Atty. Sharon L. McCarthy

Sharon L. McCarthy, a Fellow of the American College of Trial Lawyers, has extensive experience representing individuals and corporations in white-collar criminal matters as well as civil and criminal tax controversies.

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Profile Summary

About Sharon L. McCarthy at a glance

Sharon L. McCarthy is a criminal defense, tax litigation, and white collar attorney based in New York, New York, practicing at Kostelanetz LLP. Admitted to practice in New York, New York State Bar Association. Educated at Fordham University (J.D., 1989) and Fordham University (J.D., 1989). Recognitions include Lawyer of the Year — Litigation and Controversy - Tax (New York City) (2026), Best Lawyers in America — Criminal Defense: White-Collar (2026), and Best Lawyers in America — Litigation and Controversy - Tax (2026). Serands clients in New York, NY and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

Sharon L. McCarthy, a Fellow of the American College of Trial Lawyers, has extensive experience representing individuals and corporations in white-collar criminal matters as well as civil and criminal tax controversies. Her cases have included government investigations of:

  • securities fraud, including insider trading and market manipulation;
  • bank fraud;
  • tax fraud;
  • mail and wire fraud, including theft of honest services;
  • accounting fraud;
  • failure to file tax returns;
  • antitrust violations;
  • construction fraud relating to Minority and Women Owned Business Enterprise (MWBE) certification; and
  • attorney misconduct.

Ms. McCarthy also conducts sensitive internal investigations for corporate and institutional clients either facing potential criminal charges or whose officers or employees have engaged in misconduct. She has represented individuals who have been implicated, but not charged, in connection with recent major public corruption cases.

Ms. McCarthy assists clients in voluntarily disclosing off-shore assets and has successfully represented numerous clients in connection with both IRS and NYS tax audits involving sensitive matters, including undisclosed income and off-shore assets.

In 2013, Ms. McCarthy successfully represented Denis Field, the former CEO of BDO Seidman, in a major tax shelter trial in the Southern District of New York. After he had initially been convicted on all counts, Ms. McCarthy obtained Mr. Field’s acquittal on all counts in a re-trial, in a case described by the government as the largest criminal tax fraud in history.

Ms. McCarthy also has an extensive background in public service. In 2011, she was appointed by the New York City Police Commissioner to the Crime Reporting Review Committee, whose report was issued in April 2013. From May 2008 to March 2009, she served as Special Counsel to the New York State Attorney General in an investigation into whether there had been political interference with the New York State Police. From 1994 to 2006, Ms. McCarthy served as an Assistant United States Attorney in the Southern District of New York, where she served as lead counsel and supervisor of dozens of federal criminal jury trials and argued numerous appeals before the Second Circuit Court of Appeals. While in the U.S. Attorney’s Office, Ms. McCarthy served as Chief of the Violent Crimes Unit and Deputy Chief of the Criminal Division and served in the Public Corruption Unit. Ms. McCarthy was the recipient of the Director’s Award for Superior Performance as an Assistant United States Attorney in both 1996 and 1999.

Prior to her service in the U.S. Attorney’s Office, Ms. McCarthy was an Associate at Lankler Siffert & Wohl and served as a Law Clerk to Judge John F. Keenan, United States District Judge for the Southern District of New York.

Ms. McCarthy is actively involved in various professional associations. She is Chair of the Federal Criminal Procedure Committee of the American College of Trial Lawyers and a member of its Downstate New York Committee. For over ten years, she served on the First Department’s Committee on Character and Fitness, was the first woman to serve as President of the Fordham Law Alumni Association, served as a Vice President of the Association of the Bar of the City of New York, and from 2012-2015 served as Chair of the City Bar’s Criminal Law Committee. She is also active in the Federal Bar Council and the New York Council of Defense Lawyers.

Since 2009, she has been recognized by “New York Super Lawyers” in the field of white-collar criminal defense. Since 2012, Ms. McCarthy has been listed in Best Lawyers in America. She is recognized in Chambers USA for New York White Collar Defense. She is AV Rated in Martindale-Hubbell.

Ms. McCarthy is a 1989 graduate of Fordham Law School, where she served as an Articles Editor on the Fordham Law Review. She received a B.A. in 1985 from Colgate University.

BACKGROUND AND EXPERIENCE

Special Counsel to the Attorney General for the New York State Police Investigation, Office of the New York State Attorney General (May 2008 – March 2009)
Served as lead counsel in an investigation into whether there had been political interference with the New York State Police. Supervised a team of attorneys and investigators.

Assistant United States Attorney, United States Attorney’s Office for the Southern District of New York (1994 – 2006)
Extensive experience as lead counsel and supervisor of numerous federal criminal jury trials, hearings, evidentiary hearings, oral arguments, plea proceedings, and sentencings. Briefed and argued numerous appeals before the Second Circuit Court of Appeals.

Chief, Violent Crimes Unit
(July 2002 to September 2006)

Deputy Chief, Criminal Division
(January 2001 to July 2002)

Honors: Recipient, Director’s Award for Superior Performance as an Assistant United States Attorney (1996 and 1999)

Associate, Lankler Siffert & Wohl(1991-1994)

Law Clerk, Honorable John F. Keenan
United States District Judge for the Southern District of New York (1989 - 1991)

Practice Areas Explained

Sharon L. McCarthy's Areas of Practice

Each practice area below reflects the types of cases Sharon L. McCarthy handles, with a brief overview of what that area of law covers.

Criminal Defense

A criminal defense attorney protects your rights from arrest through trial. Find experienced lawyers handling DUI, drug, federal, theft, and violent-crime charges.

Sharon L. McCarthy is one of 214,271 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in New York →

Tax Litigation

Sharon L. McCarthy is one of 3,110 tax litigation attorneys indexed nationally. Browse tax litigation attorneys in New York →

White Collar Crimes

Sharon L. McCarthy is one of 20,025 white collar attorneys indexed nationally. Browse white collar attorneys in New York →

Jurisdictional Context

Why local counsel matters in New York

Practicing law in New York. Legal matters in New York are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in New York are typically filed in the local municipal court or the appropriate New York state district court, depending on subject matter and amount in controversy. An attorney licensed in New York brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in New York courts without local counsel or pro hac vice admission.

Looking for additional New York attorneys? Browse all attorneys in New York or all attorneys in New York.

Frequently Asked

Common questions about Sharon L. McCarthy

Where is Sharon L. McCarthy's law office located?
Sharon L. McCarthy's law practice is located in New York, New York. The firm is Kostelanetz LLP. You can contact the office directly through this profile page.
What practice areas does Sharon L. McCarthy handle?
Sharon L. McCarthy focuses on criminal defense, tax litigation, white collar. Each practice area listed reflects experience handling cases of that type in New York.
Where did Sharon L. McCarthy go to law school?
Sharon L. McCarthy earned their education at (J.D., 1989); (J.D., 1989); (BA, 1985).
How can I contact Sharon L. McCarthy for a consultation?
You can contact Sharon L. McCarthy directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has Sharon L. McCarthy received?
Sharon L. McCarthy's notable recognition includes: Lawyer of the Year — Litigation and Controversy - Tax (New York City); Best Lawyers in America — Criminal Defense: White-Collar; Best Lawyers in America — Litigation and Controversy - Tax; Best Lawyers in America — Special Focus:; Best Lawyers in America — COVID-19.

Education

J.D.
Fordham University
- 1989
J.D.
Fordham University
- 1989
BA
Colgate University
- 1985

Awards

Lawyer of the Year — Litigation and Controversy - Tax (New York City)
- 2026
Best Lawyers in America — Criminal Defense: White-Collar
- 2026
Best Lawyers in America — Litigation and Controversy - Tax
- 2026
Best Lawyers in America — Special Focus:
- 2026
Best Lawyers in America — COVID-19
- 2026
Best Lawyers in America — Awards:
- 2026
Best Lawyers in America — Ms. McCarthy has been recognized by "New York Super Lawyers" in the field of white-collar criminal defense since 2009.
- 2026
Best Lawyers in America — Martindale-Hubbell AV Rating
- 2026
Best Lawyers in America — Ms. McCarthy has been listed in Best Lawyers in America since 2011.
- 2026
Best Lawyers in America — Ms. McCarthy is recognized in Chambers for New York White Collar Defense
- 2026
Best Lawyers in America — Ms. McCarthy is a Fellow of the American College of Trial Lawyers
- 2026

Bar Admissions

New York, New York State Bar Association

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