Top International Tax Cases Of 2026: Midyear Report

Molly Moses
Contributing Editor

The U.S. government came out ahead in four of the most closely watched international tax cases decided in the first half of 2026, scoring a victory against telecommunications giant Liberty Global and prevailing in a computational dispute over Varian Medical Systems, among others. Here, Law360 looks at some of the most significant court rulings from the year's first half.

Int'l Tax In June: Tariff Refunds Challenged, EU Sets Agenda

Molly Moses
Contributing Editor

As U.S. Customs and Border Protection entered the second phase of its process for refunding invalidated tariffs in June, President Donald Trump's administration challenged its authority to issue those refunds. Here, Law360 examines some of the past month's biggest international tax developments.

Solar, Wind Credits Still Clouded After Safe Harbor Revived

Kat Lucero

Renewable energy advocates scored a victory when a D.C. federal judge reinstated a safe harbor construction rule for solar and wind projects to access green energy tax credits, but uncertainty persists over the real-world impact while the federal government weighs its next steps.

Power To The Paralegals: Burnout As A Structural Problem

Law firm leadership can best retain their paralegals not by encouraging self-care, but by seeking top-down structural solutions for the quiet proliferation of responsibilities and the vicarious exposure to client trauma that particularly drive burnout in this vital role, says Erika Sneeringer at Brockstedt Mandalas.

Managing Post-IEEPA Tariff Refunds, Replacements And Risks

Companies and investors reeling from the rapid changes resulting from February's U.S. Supreme Court ruling that the International Emergency Economic Powers Act doesn't authorize tariffs should focus on understanding the duty refund process, the likely replacement tariffs and the operational ways they can minimize their tariff exposure, say attorneys at Debevoise.

Wire Fraud Ruling May Upend White Collar Enforcement

A Texas federal court’s recent decision in U.S. v. Garza, dismissing wire fraud charges arising from an alleged $1 billion tax shelter scheme, advances a broader constitutional principle that could affect sentencing and reshape charging practices across white collar criminal cases involving specialized statutory regimes, say attorneys at Benesch.

Economic Questions To Ask Amid Tariff Refund Class Actions

The U.S. Supreme Court's recent holding that the International Emergency Economic Powers Act doesn't authorize the president to impose tariffs has sparked class actions, but determining whether a retailer received a windfall is complex, even if it passed tariff costs into consumer prices before receiving a refund, say economists at Ankura Consulting Group.

Cow Horse Makes Me A Better Lawyer

Moving an unwilling 800-pound cow while riding a horse at high speed is exhilarating, a little unhinged and, at least for me, a surprisingly effective training ground for litigation — both demand focus, preparation over rigid planning and the willingness to act despite fear, says Ashley Zitrin at Glenn Agre.

Checking For AI Errors Is Now A Two-Way Street

A handful of recent federal and state cases demonstrate the importance of checking for errors generated by artificial intelligence not only in your own court submissions, but also your opponent's, as well as when catching opposing counsel's AI mistakes could result in an award for attorney fees, says Tamara Barago at Hollingsworth.

5 Things Associates Must Ask About Their Firm's Merger Plan

The associates who navigate law firm mergers best ask the right questions early, such as inquiring about partners' plans, to assess how the merger could affect their workflow and career path, says Jackie Bokser-LeFebvre at Major Lindsey.

2 'Rocket Dockets' And The Rules That Propel Them

The fastest civil trial courts in the country are currently in the Eastern District of Virginia and the Southern District of Florida, and their chief judges provide insights into the court rules that keep them ahead, says Robert Tata at Hunton.

Key Legal Considerations For Data Center Battery Storage

Battery energy storage systems have become essential infrastructure for data center development — but as trade, energy and tax policies continue to shift, companies operating in this space must understand the importance of supply chain requirements and industry-tailored contracts, says RJ Colwell at Davis Graham.

Your Next Litigation Hold Should Cover AI Chat Logs

The Delaware Chancery Court’s recent decision in Fortis Advisors v. Krafton to treat a CEO’s artificial intelligence chats as substantive evidence is being read as a discovery warning to litigators, but there is a second duty-to-preserve lesson that is especially pertinent to in-house counsel, say attorneys at Faegre Drinker.

Cannabis Policy Shift May Reshape Banking, Insolvency Risks

The Trump administration's cannabis rescheduling initiative aims to correct classification that had rendered federal banking, tax administration and insolvency law incoherent, and will begin to restore some alignment between federal law and the economic reality of the marijuana industry, says Richard Ormond at Buchalter.

Studying Foreign Languages Makes Me A Better Lawyer

Studying Italian and Japanese has shown me that learning a new language can benefit a legal career in several ways, including by demonstrating the importance of approaching problems from a fresh perspective and the value of practicing patience with colleagues and clients, says Anna King at Genworth Financial.

Sold Inventory May Drive Tax Treatment Of Tariff Refunds

Companies determining the tax treatment of refunds expected following the U.S. Supreme Court's February decision invalidating tariffs imposed under the International Emergency Economic Powers Act should consider whether the tariff costs have already reduced their income considering the cost of goods sold, say attorneys at McDermott.