Meet the 2025 Sponsors 

Gold Sponsors

Euclid Transactional

Euclid Transactional, LLC is a managing general agency that specializes in providing  underwriting solutions for transactional insurance – focusing on representations & warranties, tax liability, contingent liability. Operated by one of the industry’s largest teams of experienced underwriters and claims executives, Euclid Transactional has a proven track record in fairly and efficiently handling claims and strives to provide the most consistent and dependable service, having helped facilitate paid losses of over $1.01 billion in claims payments. Euclid Transactional has underwritten over 7,600 policies and insured more than $6.2 trillion in total deal value - among the highest in the industry.

Marsh

Marsh is the world’s leading insurance broker and risk advisor. With around 45,000 colleagues operating in 130 countries, Marsh serves commercial and individual clients with data-driven risk solutions and advisory services. Marsh is a business of Marsh McLennan (NYSE: MMC), the world’s leading professional services firm in the areas of risk, strategy and people. With annual revenue nearly $20 billion, Marsh McLennan helps clients navigate an increasingly dynamic and complex environment through four market-leading businesses: Marsh, Guy Carpenter, Mercer and Oliver Wyman. For more information, visit marsh.com, follow us on LinkedIn and Twitter or subscribe to BRINK.

Silver Sponsors

Charles River Associates

Charles River Associates is a leading global consulting firm that offers economic, financial, and strategy expertise and is a trusted advisor in transfer pricing matters. 

Our award-winning team has extensive experience from planning to documentation to dispute resolution. Our experts are renowned as thought leaders and are engaged by multinational corporations, law firms, tax consultants, and tax authorities around the world to provide clear recommendations to complex intercompany pricing matters. We partner with our clients to help navigate the ever-changing landscape as transfer pricing and compliance rules proliferate around the globe. Faced with ever increasing requirements and scrutiny, our clients value the independence of our analysis and the clarity of our guidance.

DLA Piper

With over 440 tax lawyers and economists in offices throughout the Americas, Europe, the Middle East, Africa and Asia Pacific, we help tax departments of multinational companies address the complex challenges of international commerce and business operations. We advise on a wide range of tax issues, ranging from inward and outward investment, private equity deals, structuring for corporate and real estate acquisitions and disposals, and transfer pricing planning and documentation through to executive and employee compensation packages. Our experience allows us to find the best solutions for the tax issues our clients are facing. To do this, we draw on our in-depth knowledge and extensive experience gained from working within every area of tax law to deliver consistently high-quality, commercially aware tax advice.

Fonoa

Fonoa Technologies, Ltd. helps enterprise companies automate their entire indirect tax function powering hundreds of millions of transactions globally through a plug-and-play platform. Made up of a group of technology and tax industry professionals, Fonoa is the first global tax automation platform that allows businesses to validate tax IDs, calculate taxes, generate e-invoices, report transactions, and file tax returns through a single solution.

KPMG

KPMG LLP is the US firm of the KPMG global organization of independent professional services firms providing Audit, Tax and Advisory services. The KPMG global organization operates in 142 countries and territories and has more than 275,000 partners and employees working in member firms around the world. Each KPMG firm is a legally distinct and separate entity and describes itself as such.

Loyens & Loeff

Loyens & Loeff is a leading law and tax firm in the Netherlands, Belgium, Luxembourg, and Switzerland, offering innovative, customised advice from over 1000 advisers globally. Whatever your tax issue is, our experts can provide pragmatic, tailored advice and support on a whole range of tax and legal issues, from M&A and internal reorganisations to transfer pricing, EU law, tax controversy and litigation, tax opinions and second opinions. As an independent, full-service collaborative practice, Loyens & Loeff coordinates international tax and legal matters through an international network of offices in major financial centers, including London, Paris, New York, and Tokyo. 

Mayer Brown

Mayer Brown’s full-service, global Tax practice offers deep knowledge of tax law and extensive experience in all tax matters, including tax transactions and planning, tax disputes, international tax, transfer pricing, state and local tax, and wealth management. Our 100+ tax lawyers, located across four continents—the Americas, Europe and Asia—understand that tax is an important consideration in decisions across the business and financial lifecycle. We are a trusted tax partner, acting as both advisor to and advocate for, multinational companies, investors and financial institutions around the world.

Skadden

Skadden’s Tax Group, comprising 130 attorneys in nine offices worldwide, is experienced in virtually every type of matter that presents significant tax issues. We represent clients in all aspects of tax law, including in corporate transactions and in most types of disputes with taxing authorities.

With extensive experience at the Department of the Treasury, IRS and White House, as well as in congressional tax writing committees, our tax professionals are highly skilled in handling intricate tax issues with the goal of reaching creative and value-added solutions tailored to each client’s specific needs. 

As an integrated firm with 50-plus practices across 21 offices worldwide, we are uniquely positioned to serve clients in every industry and on any tax matter.

Vertex

Vertex, Inc. is a leading global provider of indirect tax solutions. The Company’s mission is to deliver the most trusted tax technology enabling global businesses to transact, comply and grow with confidence. Vertex provides solutions that can be tailored to specific industries for major lines of indirect tax, including sales and consumer use, value added and payroll. Headquartered in North America, and with offices in South America and Europe, Vertex employs over 1,500 professionals and serves companies across the globe. For more information, visit www.vertexinc.com or follow us on Twitter and LinkedIn. 

White & Case

White & Case is a global law firm with longstanding offices in the markets that matter today. Our on-the-ground experience, our cross-border integration and our depth of qualified lawyers help our clients work with confidence in any one market or across many. We guide our clients through difficult issues, bringing our insight and judgment to each situation. Our innovative approaches create original solutions to our clients' most complex domestic and multijurisdictional deals and disputes. By thinking on behalf of our clients every day, we anticipate what they want, provide what they need and build lasting relationships. We do what it takes to help our clients achieve their ambitions.

Withum

Withum is a forward-thinking, technology-driven advisory and accounting firm committed to helping clients be more profitable, efficient and productive in today's complex business environment. With offices in major cities and financial centers across the country, and as an independent member of HLB, the global advisory and accounting network, Withum serves businesses and individuals on a local-to-global scale. We provide the expert advice and innovative solutions you need to Be in a Position of StrengthSM in today's fast-paced, tech-driven world. Get to know us at www.withum.com.

Bronze Sponsors

Jones Day

Jones Day helps clients resolve the most complex issues arising from their transactions, controversies, and regular business operations. With over 80 lawyers worldwide in 22 offices, our tax team offers deep knowledge, sound practical judgment, and the highest ethical standards.

Lockton

Lockton is a global insurance brokerage that provides outstanding risk mitigation and claims management through the application of modern insurance strategies. With expertise in risk management, property and casualty, employee benefits/people solutions, professional and private risk, we help our clients protect what matters to them most: people, property, and their bottom line.

Interested in sponsoring the event in 2026?

Jamil Ahad
Commercial Director
ITR
✉ jamil.ahad@internationaltaxreview.com
☏ +44 (0) 207 779 8767

ITR produces 8 high level conferences and summits a year which attract over 1500 attendees. These events provide firms with the opportunity to showcase their expertise, meet the most senior tax and TP leaders as well as raise brand awareness and profile.