US/UK Tax Assistant Manager

US/UK Tax Senior – Private Client (Cross-Border)

About the firm

Our client is a well-established boutique tax practice specialising in US and UK taxation for individuals, with a particular focus on US citizens living in the UK. They advise clients with complex, multi-jurisdictional affairs and are known for a personal, high-touch service that larger firms struggle to match. The team is small, close-knit and highly experienced, offering genuine exposure to senior advisers and a real say in how the practice grows.

They’re now looking for a Tax Senior to take ownership of a client portfolio, contribute to advisory work, and support the development of their junior team.

The role

This is a varied role covering compliance, cross-border advisory work, client management and team leadership. You’ll manage your own clients day to day, work closely with senior colleagues on planning and research, and act as a deputy to the Tax Team Lead.

What you’ll be doing

Tax compliance

• Managing the preparation and review of US and UK tax returns for individual clients, including Forms 1040 and 8938, FBARs and UK Self-Assessment
• Ensuring timely filing of returns, estimates and extensions for clients with complex, multi-jurisdictional obligations
• Leading the preparation of filings for clients with delinquent returns, including Streamlined Foreign and Domestic Offshore Procedures (SFOP/SDOP), Delinquent FBAR Submission Procedures and WDFs
• Preparing responses and documentation for enquiries from the IRS, HMRC and other authorities

Cross-border planning and advisory

• Supporting senior colleagues with research, consultations and onboarding of prospective clients
• Advising clients on tax-efficient structures, the tax implications of investments, and punitive tax regimes in the US and UK
• Drafting written memos on a range of tax matters, including UK residency under the Statutory Residence Test (SRT)

Client relationships

• Acting as the primary point of contact for your own portfolio of clients and handling all their tax-related queries
• Building strong, long-term client relationships that drive satisfaction and retention

Team leadership

• Supervising, mentoring and reviewing the work of junior team members
• Helping train the team on US and UK tax issues for US citizens resident in the UK
• Supporting the Tax Team Lead (across two tax teams) to build a high-performing team, and deputising in their absence

What they’re looking for

• Around 3+ years’ experience in tax, with a focus on US and UK individual taxation
• Strong knowledge of both the US and UK tax systems, including tax treaties and US expatriation rules
• A professional tax qualification such as EA (Enrolled Agent), ATT or CTA, or currently working towards one
• Familiarity with tax software such as ProSystem fx and/or CCH Axcess

Nice to have:

• Experience with US treatment of foreign companies (Form 5471, GILTI, Form 8832 elections)

About you

• Organised and accurate, with excellent attention to detail
• A clear communicator who can explain complex tax matters simply and concisely
• Comfortable managing multiple clients and deadlines in a busy environment
• A team player who enjoys working alongside other committed tax professionals

Pay: £50,000.00-£70,000.00 per year

Work Location: In person