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  • Professionals (214)
  • Capabilities (75)
  • Experience (18)
  • Insights & News (1,036)
  • Other Results (43)

Professionals 214 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 75 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

Industry

Energy Transition

As core segments of the global economy continue to embrace sustainable and carbon-neutral energy resources as complementary and integral to fossil-based systems of energy production and consumption, we stand ready to guide our clients through the energy transition. Our team is at the forefront of the flourishing energy transition market, and we bring practical experience, perspective, and innovative thinking to the sector. By combining our more than 40 years of experience in renewable and conventional energy with an integrated service approach, we help clients to plan for, invest in, and thrive in today’s shifting environment. Not only does our team include experienced energy and corporate lawyers, but also practitioners with deep experience in tax credits and tax equity, project finance, infrastructure, and power and renewables to serve the varied needs of our client base....Read more

Experience 18 results

Experience

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February 10, 2025

US$600 million Total Play Telecomunicaciones S.A.P.I. de C.V. Offer to Exchange Senior Notes

Experience

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October 15, 2024

Winston Represents Specialty Building Products, LLC in a $510.0 Million Senior Secured Notes Offering

Experience

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September 27, 2024

Winston Represents KeHE Distributors, LLC in a $250.0 Million Senior Secured Notes Tack-On Offering

View All Experience

Insights & News 1,036 results

Benefits Blast

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July 14, 2025

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5 Min Read

One Big Beautiful Bill: Changes for Employer-Provided Health and Welfare Benefits and Fringe Benefits

The much-anticipated One Big Beautiful Bill Act (the OBBB) was signed into law on July 4, 2025. 

Client Alert

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July 10, 2025

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3 Min Read

No Moratorium on State AI Laws in the Federal Budget Bill: Implications for Healthcare and Life Sciences Industry

With the signing of the budget and tax bill—also known as the “One Big Beautiful Bill Act”—by President Trump on July 4, 2025, the federal government has decided that it will not attempt to preempt various state efforts to regulate the use of artificial intelligence (AI) technologies. While prior versions of the budget and tax bill (the Budget Bill) contained a purported moratorium on enforcement of existing state laws or regulations on various AI technologies or the future promulgation of new state AI laws, the final version did not contain that provision. This development is particularly relevant for healthcare and life sciences entities that employ AI technologies in product development or in the delivery of clinical care in states that have enacted regulations on AI use....Read more

Competition Corner

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July 8, 2025

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10+ Min Read

Spotlight on Japan: Legal Trends in the Semiconductor Industry in the Japanese and U.S. Markets

Semiconductors are critical components that form the foundation of virtually all modern technologies and industries, including computers, smartphones, consumer electronics, automobiles, and medical devices. Their global importance continues to grow. This blog provides an overview of recent legal developments in the semiconductor markets of Japan and the United States.

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Other Results 43 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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