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  • Professionals (583)
  • Capabilities (88)
  • Experience (69)
  • Insights & News (3,621)
  • Other Results (65)

Professionals 583 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
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Capabilities 88 results

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

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

Appellate & Critical Motions

Our nationally recognized Appellate & Critical Motions (ACM) Practice delivers sophisticated legal advocacy and analysis before trial, at trial, and on appeal. From state trial courts to the U.S. Supreme Court, our ACM attorneys identify, preserve, and present the critical legal issues that can make the difference between winning and losing....Read more

Experience 69 results

Experience

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May 15, 2025

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

Experience

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May 9, 2025

An Am Law LOTW Shout Out-Worthy Gold Medal Victory In $Jenner

Experience

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April 30, 2025

Rapid Ruling: Fifth Circuit Affirms Winston Win on Summary Judgment the Day After Oral Argument

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Insights & News 3,621 results

Seminar/CLE

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January 22, 2026

14th ITA-IEL-ICC Joint Conference on International Energy Arbitration – Houston

Imad Khan is a proud Co-Chair of The Institute for Transnational Arbitration (ITA), Institute for Energy Law (IEL) and International Chamber of Commerce (ICC) International Court of Arbitration 14th edition of what has become the premier conference on international arbitration in the energy sector. Speakers from around the globe and across the industry will gather to focus on the key issues in the field today....Read more

Benefits Blast

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August 12, 2025

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5 Min Read

New Executive Order Directs Agencies to Facilitate 401(k) Access to Private Equity, Cryptocurrency, and Other Alternative Investment

On August 7, President Trump signed an Executive Order directing the DOL, the SEC, and Treasury (including the IRS) to review and revise guidance to facilitate the inclusion of alternative investments—such as private equity, cryptocurrency, and other non-traditional assets—in defined contribution retirement plans. The Executive Order follows action in May of this year by the DOL to rescind its 2022 guidance that discouraged fiduciaries from including cryptocurrency options in 401(k) retirement plans.

Competition Corner

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August 11, 2025

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6 Min Read

Epic v. Google: Setting the Bar for Affirmative Antitrust Remedies in the Digital Age

The July 2025 decision by the Ninth Circuit Court of Appeals in Epic Games v. Google marks a landmark development in the ongoing evolution of antitrust remedies for unilateral conduct in the technology sector. The court’s willingness to affirm not just prohibitory, but also mandatory, forward-looking injunctions—requiring Google to take affirmative steps to open its Android app ecosystem to competition—signals a vigorous approach to restoring competition in digital platforms.

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Other Results 65 results

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

Site Content

What Is Tax Controversy?

A tax controversy is a dispute between a taxpayer and a tax authority such as the United States Internal Revenue Service (IRS) concerning whether the taxpayer has properly reported and paid their tax liability, and otherwise complied with applicable tax law. A tax controversy may concern a disagreement regarding the correct amount of tax or the manner in which the IRS is attempting to collect tax, as well as whether penalties are appropriate. Tax controversies may be resolved administratively or in litigation....Read more
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