Tax controversies are more than a bump in the road—they can stop an initiative or an entire enterprise in its tracks. As the Internal Revenue Service (IRS) increases its pursuit of big-ticket issues, national and multinational corporations require immediate, sophisticated responses from legal advisors with a deep understanding of the methods and goals of the IRS and the skills and experience to mount an effective defense. McDermott’s Tax Controversy practice is notable for the sophistication and skills of our team, the depth of our experience and our proven track record of delivering results for clients.
McDermott represents clients on all aspects of federal, state and local, and international tax controversy matters, including IRS audits and appeals, competent authority matters, and trial and appellate litigation. We are also experienced with the numerous alternative dispute resolution options available to taxpayers during the audit and appeals process.
Chambers USA has perennially ranked McDermott’s Tax Controversy practice in its highest tiers, with clients noting that our attorneys “provide a lot of good market knowledge.” The Legal 500 has also recognized McDermott as a leading firm in the tax controversy area, noting that we provide “excellent services for reasonable fees.” US News-Best Lawyers recently named McDermott “Tax Litigation Firm of the Year.”
Our tax controversy lawyers regularly represent some of the world’s largest corporations on complex tax issues, often with hundreds of millions of dollars under scrutiny. However, most tax controversy matters can be successfully resolved before going to court. When administrative settlement is not possible, we have extensive experience representing our clients in tax litigation at the trial and appellate levels, including before the US Supreme Court.
A diverse, global network of industry-leading talent committed to you and your vision.
Washington, DC / Speaking Engagements / March 5, 2020
Grand Cayman / Speaking Engagements / January 23-24, 2020
Detroit, MI / Speaking Engagements / December 10, 2019
San Francisco, CA / McDermott Event / December 10, 2019
Chicago, IL / McDermott Event / December 5, 2019
Rockville, MD / Speaking Engagements / November 20, 2019
Palo Alto, CA / McDermott Event / November 8, 2019
San Diego, CA / Speaking Engagements / November 7, 2019
San Francisco, CA / McDermott Event / November 7, 2019
Los Angeles, CA / McDermott Event / November 6, 2019
New Orleans, LA / Speaking Engagements / October 29, 2019
Phoenix, Arizona / McDermott Event / October 28-29, 2019
Washington, DC / Speaking Engagements / October 24, 2019
Seattle, WA / McDermott Event / October 24, 2019
Santa Clara, CA / Speaking Engagements / October 17, 2019
Chicago, IL / McDermott Event / October 17, 2019
San Diego, CA / Speaking Engagements / October 10, 2019
San Diego, CA / Speaking Engagements / October 10-12, 2019
New York, NY / Speaking Engagements / September 25, 2019
Chicago, IL / Speaking Engagements / June 27, 2019
On the Subject / May 22, 2019
Washington, DC / Speaking Engagements / May 11, 2019
Miami, FL / McDermott Event / February 25-26, 2019
International Law Office / May 11, 2018
Special Report / May 1, 2018
Video / December 7, 2017
Los Angeles, California / Speaking Engagements / December 6-8, 2017
Chicago, Illinois / McDermott Event / November 16, 2017
Chicago, Illinois / Speaking Engagements / November 15-17, 2017
New York, New York / Speaking Engagements / November 8-10, 2017
International Law Office / November 3, 2017
New York, New York / Speaking Engagements / October 18-20, 2017
Global Tax Weekly Wolters Kluwer / October 12, 2017
Tax Notes / Worldwide Tax Daily / October 11, 2017
Financial Advisor / Private Wealth / September 29, 2017
Rolling Meadows, Illinois / Speaking Engagements / September 26, 2017
San Francisco, California / Speaking Engagements / September 18-19, 2017
Tax Notes / State Tax Today / September 18, 2017
San Antonio, Texas / Speaking Engagements / September 17-20, 2017
San Antonio, Texas / Speaking Engagements / September 17-20, 2017
San Antonio, Texas / Speaking Engagements / September 17-20, 2017
Austin, Texas / Speaking Engagements / September 14-16, 2017
San Antonio, Texas / Speaking Engagements / August 18, 2017
Boston, Massachusetts / Speaking Engagements / August 5, 2017
Louisville, Kentucky / Speaking Engagements / August 2, 2017
Global Tax Weekly (Wolters Kluwer) / July 27, 2017
Law360 / July 27, 2017
New York, New York / Speaking Engagements / July 18-19, 2017
Tax Notes / State Tax Today / July 17, 2017
Tax Notes / State Tax Today / July 17, 2017
Tax Notes / State Tax Today / July 17, 2017
Tax Notes / State Tax Today / July 17, 2017
Chicago, Illinois / Speaking Engagements / June 29, 2017
Bloomberg BNA Daily Tax Report / June 28, 2017
Taxnet Pro / June 14, 2017
New York, New York / June 8, 2017
Tax Executive / May 22, 2017
Taxnet Pro / May 17, 2017
Taxnet Pro / May 15, 2017
Washington, District of Columbia / Speaking Engagements / May 13, 2017
Washington, District of Columbia / Speaking Engagements / May 11-13, 2017
Taxnet Pro (Thomson Reuters) / May 9, 2017
Chicago, Illinois / Speaking Engagements / May 8-10, 2017
/ April 2017
On the Subject / March 15, 2017
Bloomberg BNA Benefits Practice Resource Center / February 15, 2017
On the Subject / January 31, 2017
On the Subject / January 12, 2017
On the Subject / December 20, 2016
/ December 2016
Global Tax Weekly (Wolters Kluwer) / August 4, 2016
/ May 2016
Tax Notes / Worldwide Tax Daily / March 21, 2016
Law360 / February 3, 2016
American Bar Association Section on Real Property, Trust & Estate Law / December 9, 2015
/ October 2015
On the Subject / September 9, 2015
On the Subject / April 14, 2015
Special Report / April 9, 2015
On the Subject / February 10, 2015
Neue Zeitschrift für Gesellschaftsrecht (NZG), Issue 34 / December 4, 2014
/ Fall 2014
Journal of Multistate Taxation and Incentives (Thomson Reuters/Tax & Accounting), Volume 24, Number 7 / October 2014
Getting the Deal Through / September 2014
Neue Zeitschrift für Gesellschaftsrecht (NZG), Issue 27 / September 2014
Journal of Taxation of Financial Products, Volume 12, Issue 1 / August 2014
On the Subject / August 11, 2014
WiWo-Blog Management / August 6, 2014
On the Subject / July 28, 2014
/ Summer 2014
/ Spring 2014
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Chicago / Accolades & Rankings / August 16, 2019
2020 Best Lawyers In America Recognizes Over 150 McDermott Lawyers
Law360 / August 15, 2019
Chicago / Press Releases / April 30, 2019
McDermott Gathers Business Leaders to Plan for the Future within the New ...
ePrivateClient / October 2018
Law360 / July 6, 2018
Law360 / July 6, 2018
Chicago / Bloomberg BNA Daily Tax Report: State / May 23, 2018
Chicago / Tax Notes / Worldwide Tax Daily / February 12, 2018
Washington, DC / Accolades & Rankings / December 1, 2017
McDermott Recognized in the 2018 World Tax Review and World Transfer Pricing Guides
Washington, DC / Press Releases / December 1, 2017
Dallas / Tax Notes Today / October 30, 2017
Washington, DC / Tax Notes Today / October 30, 2017
Munich / Who's Who Legal / October 2017
Chicago / Who's Who Legal / October 2017
Washington, DC / Tax Notes / State Tax Today / October 10, 2017
New York / Tax Notes / State Tax Today / October 5, 2017
Treasury Considers Revoking Section 385 Documentation Requirements
Washington, DC / Tax Notes / State Tax Today / October 4, 2017
South Dakota Petition Urges U.S. Supreme Court to Kill Quill
Washington, DC / Digital Commerce 360 / Internet Retailer / October 3, 2017
South Dakota Asks the US Supreme Court to Hear Its Case for ...
Miami / Law360 / September 25, 2017
Miami / Tax Notes / State Tax Today / September 25, 2017
New York Tax Appeals Tribunal Finds Assessment on German Insurer Violated Tax ...
Chicago / Tax Notes / State Tax Today / September 18, 2017
New York False Claims Act Tax Cases Increasing, State Official Says
Washington, DC / Law360 / September 14, 2017
New York / Who's Who Legal / September 2017
Chicago / Tax Notes / State Tax Today / September 5, 2017
Split Virginia Supreme Court Hands State Victory in Addback Statute Dispute
Washington, DC / USA Today / August 17, 2017
A 'Netflix Tax'? Yes, and It's Already a Thing in Some States
Miami / Tax Notes / State Tax Today / August 14, 2017
Washington, DC / Tax Notes / State Tax Today / August 10, 2017
New York / Tax Notes / State Tax Today / August 7, 2017
New York Updates Guidance on Treatment of Broker-Dealer Status, Disregarded Entities
Miami / Tax Notes / State Tax Today / July 28, 2017
Washington, DC / Tax Notes / State Tax Today / July 19, 2017
U.S. House Judiciary Subcommittee to Hold Hearing on Bill Codifying Quill ...
Washington, DC / Tax Notes / State Tax Today / July 10, 2017
Is the Streamlined Sales and Use Tax Agreement Still Relevant?
Washington, DC / Tax Notes / State Tax Today / June 29, 2017
Chicago / Bloomberg BNA Daily Tax Report / June 28, 2017
TaxProf Blog / June 27, 2017
Washington, DC / Overlawyered / June 23, 2017
Michigan, DC Consider Bounties for Turning In Those Who Underpay Taxes
Chicago / Bloomberg BNA Daily Tax Report / June 19, 2017
Washington, DC / Tax Notes / State Tax Today / June 19, 2017
Entertainment Association Files Complaint Against Chicago's 'Cloud Tax'
Washington, DC / Tax Notes / State Tax Today / June 16, 2017
States Rapidly Move to Explore Taxing the Sharing Economy, Panelists Say
Chicago / Bloomberg BNA Daily Tax Report / June 16, 2017
Court Tosses Fees for ‘King of Qui Tam,’ Business Model Done?
Chicago / Law360 / June 15, 2017
Washington, DC / Tax Notes / State Tax Today / June 14, 2017
U.S. Lawmaker Re-Introduces and Broadens Bill to Codify Quill Physical Presence
Washington, DC / Tax Notes / State Tax Today / June 5, 2017
New York / Tax Notes / State Tax Today / May 23, 2017
U.S. Supreme Court Denies Cert in State Tax Retroactivity Cases
New York / Bloomberg BNA Daily Tax Report / May 23, 2017
Washington, DC / Tax Notes / State Tax Today / May 22, 2017
Washington, DC / Bloomberg BNA Daily Tax Report / May 11, 2017
Washington, DC / Tax Notes / State Tax Today / May 10, 2017
Chicago / Procedurally Taxing / May 1, 2017
Washington, DC / Tax Notes / State Tax Today / May 1, 2017
Dallas / Law360 / April 27, 2017
Dallas / Bloomberg BNA International Tax / April 27, 2017
German Billionaire Schaeffler Loses U.S. Foreign Credit Claim
Washington, DC / Tax Notes / State Tax Today / April 20, 2017
Massachusetts DOR Says Company's Lease of Tablets to Restaurant Is Subject to ...
New York / Tax Notes / State Tax Today / April 13, 2017
Deemed Asset Sale Gain Should Be Sourced to New Jersey, State Tax ...
Washington, DC / Tax Notes/State Tax Today / April 11, 2017
Special Master to Preside Over Delaware Unclaimed Property Case
New York / Tax Notes Today / April 10, 2017
News Analysis: States Consciously Uncoupling From the Cash Flow Tax?
Washington, DC / Law360 / April 3, 2017
Delaware's New Escheat Rules Keep Troubling Estimation Methods
Washington, DC / Birmingham Business Journal / March 23, 2017
Alabama's Proposed Streaming Tax Faces an Uphill Battle at Capitol
Washington, DC / Bloomberg BNA Daily Tax Report / March 1, 2017
House Would Back Online Sales Tax Bill If Committee Releases It
Accolades & Rankings / December 29, 2016
McDermott Continues to be Highly Recommended by International Tax Review
Dallas / Law360 / December 1, 2016
New York / Press Releases / September 19, 2016
McDermott Named “North American Tax Firm of the Year” at International Tax ...
TheCorporateCounsel.net (blog) / August 10, 2016
Escheatment: “Has Delaware Engaged In a Game That Shocks The Conscience?”
New York / Press Releases / May 31, 2016
McDermott Secures Top Rankings in Chambers USA 2016 Directory
Sinclair Broadcast Group / February 23, 2016
Accolades & Rankings / November 4, 2015
U.S. News & Best Lawyers Names McDermott “Tax Law Firm of the ...
Accolades & Rankings / October 1, 2015
Three McDermott Partners Named to International Tax Review’s “Women in Tax ...
Dallas / Press Releases / September 14, 2015
McDermott Expands in Dallas, Takes New Office Space in Uptown District to ...
Coverage / September 12, 2015
Five McDermott Partners Named to International Tax Review’s “Tax Controversy Leaders ...
International Tax Review / August 2015
Boston / Accolades & Rankings / June 3, 2015
McDermott's Ranking Results in Legal 500 US 2015 Show Continuous Improvement for the Last ...
New York / FMN / June 2015
Press Releases / May 20, 2015
McDermott Scores Top Rankings in Chambers USA 2015 Directory
Tax Journal / May 15, 2015
Tax Notes / Worldwide Tax Daily / April 24, 2015
Dallas / Press Releases / March 31, 2015
McDermott Adds Team of Three Leading Partners to its U.S. and ...
Accolades & Rankings / January 31, 2015
McDermott Italian Practice Shortlisted in Ten Categories for Finance and Tax Awards 2015 ...
Standard Federal Tax Reports / July 31, 2014
Circuit Split: D.C. Circuit Strikes, Fourth Circuit Upholds Code Sec. 36B ...
Law360 / July 23, 2014
Accolades & Rankings / May 27, 2014
McDermott Continues to Earn Top Rankings in Chambers USA 2014
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