Tax Principal, Business Advisory

We're seeking an experienced Tax Principal to serve as a trusted business advisor and deep technical resource across our tax function. In this role, you'll partner directly with business, product, and go-to-market teams to advise on the tax implications of strategic initiatives, new products, commercial arrangements, and market expansion. You'll also assist with audit defense and dispute management efforts and conduct technical research and documentation for complex tax issues across the tax team.

Key Responsibilities:

Business Advisory & Transaction Support

• Serve as a strategic tax advisor to business, product, partnerships, and go-to-market teams on new initiatives, product launches, pricing and billing structures, and commercial arrangements

• Provide practical, business-oriented tax guidance on strategic transactions, including infrastructure and compute arrangements, as the company scales

• Review and negotiate tax provisions in commercial contracts, cloud service agreements, and partnership arrangements

• Advise on the tax considerations of international expansion and new market entry, partnering with cross-functional teams from early planning through execution

• Collaborate with Legal, Finance, and business teams on cross-functional matters, translating technical positions into actionable recommendations

Technical Research & Documentation

• Research and document significant technical tax issues, including equity compensation and operational tax questions

• Prepare comprehensive tax technical memoranda meeting rigorous audit standards

• Conduct in-depth research on complex federal and international tax issues using primary sources (Code, regulations, case law, legislative history)

• Draft technical memoranda supporting material tax positions and planning initiatives

• Maintain tax technical research library and documentation standards

• Stay current on tax law developments and assess impact on Anthropic's operations

Tax Compliance & Risk Assessment

• Partner with tax team members to assist with driving tax audit defense and dispute resolution efforts, including preparing audit defense files, coordinating responses to tax authority inquiries, and managing relationships during examinations and appeals processes

• Assist with quarterly and annual tax provision processes (FIN 48/ASC 740 compliance), analyze and document uncertain tax positions and related reserves, and support external auditor discussions regarding tax provision matters

Required Qualifications

• JD or LLM in Taxation from an accredited law school

• Exceptional tax technical research and writing skills

• Deep expertise in US federal income tax research methodology and primary source materials

• Experience preparing technical tax memoranda for audit or IRS defense purposes

• Proven ability to translate complex tax technical concepts into clear, well-documented analysis and practical business guidance

• Demonstrated success partnering with business teams as a strategic advisor, not just a technical reviewer

• Meticulous attention to detail and commitment to technical excellence

Preferred Qualifications

• 8–12 years of tax experience with significant Big 4 and/or large law firm background

• Experience with tax technical software/databases (Bloomberg Tax, RIA Checkpoint, Westlaw)

• Experience with equity compensation tax matters (Section 83, 409A, 422, etc.)

• Knowledge of international tax matters (Subpart F, GILTI, transfer pricing, treaty analysis)

• Experience in technology or AI/software industry

• Prior in-house experience at a high-growth technology company

• Familiarity with public company tax operations and reporting requirements

Annual compensation range for this role is $300,000-$370,000 USD.