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  • Professionals (445)
  • Capabilities (88)
  • Experience (166)
  • Insights & News (5,136)
  • Other Results (132)

Professionals 445 results

Olga Loy
Olga Loy
Partner
  • Chicago
Email
+1 312-558-6338
vCard

Partner

  • Chicago
James N. Mastracchio
James N. Mastracchio
Partner
  • Washington, DC
Email
+1 202-282-5849
vCard

Partner

  • Washington, DC
Susan Elizabeth Seabrook
Susan Elizabeth Seabrook
Partner
  • Washington, DC
Email
+1 202-282-5220
vCard

Partner

  • Washington, DC
View All Professionals

Capabilities 88 results

Practice Area

Tax

With an international geographic reach, Winston & Strawn’s integrated tax practice addresses virtually all areas of tax law. Our group of 40 tax attorneys is well-versed in representing some of the largest public and privately-held corporations, exempt organizations, and large estates....Read more

Practice Area

Tax Controversy & Criminal Tax

Our Tax Controversy attorneys advise and represent clients in every aspect of federal and state tax investigations, as well as the criminal tax enforcement process. This includes the Internal Revenue Service’s (IRS) multi-jurisdictional examinations and administrative appeals, U.S. Competent Authority representations, post appeals mediation, and trial court and appellate litigation in every federal court hearing a tax matter....Read more

Practice Area

Government Program Fraud, False Claims Act & Qui Tam Litigation

Investigations and litigation involving alleged fraud against the government pose a significant and growing threat to organizations and individuals across all industries that engage directly or indirectly in business with federal, state, and/or local governments. The government makes aggressive use of its extensive criminal and civil investigatory powers to root out alleged fraud and abuse implicating government funds, including one of its most powerful civil enforcement tools—the federal False Claims Act (FCA)—and similar state false claims statutes....Read more

Experience 166 results

Experience

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August 19, 2025

Winston Advised Ellipsis Onshore Holdings in the Acquisition of Oil and Gas Non-Operated Assets in the Permian Basin of Texas and New Mexico

Experience

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May 27, 2025

PicoCELA Inc. Closes $1.8 Public Offering

Experience

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May 15, 2025

Winston Secures Federal Circuit Victory for Snap Axing Image-Presentation Patents on the Pleadings

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Insights & News 5,136 results

Seminar/CLE

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September 18, 2025

Winston Hosts New York Financial Services Symposium

Winston’s Financial Services Industry Group is pleased to host our inaugural Financial Services Symposium in our New York office on Thursday, September 18, 2025. This event will include a half-day of programming led by top industry thought leaders. Below you will find details about each panel....Read more

Recognitions

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September 4, 2025

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1 Min Read

Winston Ranks No. 6 on the 2025 American Lawyer Midlevel Associate Survey

Winston & Strawn earned a top spot on the 2025 AmLaw Midlevel Associate Survey. In the regional rankings, our Chicago office took the No. 1 spot, our New York office secured the No. 3 spot; and in Dallas we came in at No. 6....Read more

Sponsorship

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September 3, 2025

Winston & Strawn Sponsors Real Estate Entrepreneurs and Leaders Summit

Winston is proud to sponsor the 4th Annual Real Estate Entrepreneurs and Leaders (REEL) Summit, a forum for next-generation CEOs, founders, and partners focused on growing emerging businesses in real estate through interactive programming and networking....Read more
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Other Results 132 results

Site Content

What Is the JOBS Act?

The Jumpstart Our Business Startups (JOBS) Act is legislation, enacted on April 5, 2012, designed to encourage funding of small businesses in the U.S. by easing securities regulations and therefore making it easier for private companies to access the public capital markets....Read more

Site Content

What Is Tax Evasion?

Tax evasion is the failure to pay or the deliberate underpayment of federal income taxes. The U.S. income tax system is based on voluntary compliance, and it is the taxpayer’s responsibility to report all income and to pay all taxes due. Tax evasion is a known violation of a legal duty, and may result in monetary penalties, imprisonment, or both....Read more

Site Content

What Is a Tax Authority?

A tax authority is a government body or agency responsible for collecting taxes, administering tax laws, and enforcing tax compliance. In the United States, the Internal Revenue Service (IRS) is the federal tax authority. Most states, territories, and local jurisdictions also have tax authorities to ensure compliance with applicable state and local laws and regulations. These tax authorities are generally responsible for collecting taxes, administering tax laws, and enforcing tax compliance in their respective jurisdictions....Read more
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