Andersen LLP

Andersen LLP is a leading UK and US tax advisory firm specializing in serving high net worth individuals, businesses, and Web3 companies. Founded in 2018 as the UK member firm of Andersen Global, the firm has established itself as a pioneer in crypto tax and accounting services.

Core Services

Andersen LLP provides comprehensive tax services across multiple practice areas:

Private Client Services: The firm advises high net worth individuals on complex UK and US tax matters, including capital gains tax planning, inheritance tax, trust taxation, estate planning, and cross-border tax structuring. Their private client team is recognized in Chambers HNW rankings for their expertise in handling sophisticated wealth management tax issues.

Crypto Tax and Accounting: Andersen has built a market-leading Web3 & Disruptive Technology practice, offering specialized services for crypto investors, traders, and Web3 companies. Services include crypto accounting under UK GAAP and IFRS, tax compliance for individuals and businesses, DAO structuring, token valuations, tokenomics advisory, employee token incentive schemes, and blockchain forensic accounting. Partners Zoe Wyatt and Ben Lee co-authored the definitive Cryptoasset Taxation book published by Bloomsbury in 2025.

Corporate Tax: The firm provides corporation tax compliance and advisory services for SMEs, private equity-backed businesses, and multinational groups, including M&A tax due diligence, international tax structuring, transfer pricing, R&D tax credits, innovation incentives, and post-merger integration.

International Tax: With deep expertise in both UK and US taxation, Andersen advises on cross-border tax planning, inbound investment structuring, expatriate taxation, and global mobility services for companies deploying international talent.

Employee Incentives: The firm designs and implements employee incentive arrangements including EMI schemes, growth shares, and token-based compensation structures for Web3 companies.

Tax Dispute Resolution: Andersen provides expert assistance with HMRC investigations, tax enquiries, and dispute resolution, including specialized support for crypto-related tax matters.

Key Strengths

Web3 Expertise: Andersen is recognized as a leading advisor in the crypto and blockchain space, with partners featured in Citywealth's Top 50 Crypto Professionals (2022-2025) and Spears 500 Top Recommended Crypto Advisors. The firm advises everyone from individual crypto investors to large multinational Web3 companies on complex structuring, compliance, and regulatory matters.

Dual UK/US Capability: The firm's unique strength lies in its deep technical expertise in both UK and US tax systems, enabling seamless cross-border tax planning for internationally mobile clients and businesses.

Innovative Technology: Andersen has developed proprietary solutions including TaxSync, a real-time crypto bookkeeping platform for traders, and a global mobility technology platform that enhances client experience.

Client-Centric Approach: Unlike larger firms, Andersen partners are directly client-facing and involved throughout engagements, ensuring personalized service and continuity of relationship.

Notable Achievements

• Chambers HNW 2024 ranking for high net worth tax advisory
• Partners recognized in multiple industry awards for crypto tax expertise
• Co-authors of the authoritative Cryptoasset Taxation textbook
• Regular speakers at industry events including NFT.NYC, Accountex London, and Zebu Live
• Featured commentary in leading publications on crypto regulation and tax policy

Why Choose Andersen LLP

Andersen combines technical excellence with entrepreneurial agility. As an independent member firm of Andersen Global, they offer the resources and international reach of a global network while maintaining the responsiveness and personalized service of a specialist boutique. The firm's commitment to innovation, particularly in the Web3 space, positions them at the forefront of emerging tax issues affecting digital assets and decentralized technologies. Their holistic approach extends beyond tax compliance to encompass strategic advisory, helping clients navigate complexity in all aspects of their financial affairs.