Senior Consultant Swiss Individual Tax / Senior Consultantess Swiss Individual Tax

Basic Information

Business Line: Tax & Legal

City: Basel

Experience Level: Experienced

Working Time Percentage: 80% - 100%

Date Published: 29-Jan-2026

Req #: 22008

Job Description

Location: Basel

Work Pattern Percentage: 80-100%

Advance your career where Global Mobility drives strategic impact.

In Global Employer Services, we support internationally mobile employees and executives as they work across borders. Our work ensures that individuals sent on assignments abroad, relocating to Switzerland, or working across multiple countries remain fully compliant with tax and social security regulations—both locally and internationally.

As a Senior Tax Consultant, you will focus on Swiss Individual Tax, working within a high-impact team to deliver comprehensive, tailored solutions that address the complex needs of our global clients. You will be entrusted with increased ownership and responsibility, leading client engagements, mentoring junior colleagues, and contributing to the development of innovative tax strategies. Your expertise will be instrumental in shaping client success and driving the growth of our practice.

Your Responsibilities

• You will take ownership from day one, participating in client-facing activities in the field of Swiss tax.
• You will serve as the primary driver of a client engagement team, steering tax compliance delivery, managing engagement finances, and providing regular outcome and risk reports to ensure client-centric and efficient execution. You will also integrate, mentor, and develop junior team members.
• You will lead and manage Swiss and international tax compliance projects, including reviewing Swiss tax declarations and analyzing complex international tax and social security positions.
• You will review advice tailored to each client, supported by thorough research and up-to-date knowledge of Swiss and international tax laws.
• You will further develop specific knowledge in Swiss national and international tax, combining your strengths with the know-how of our experienced teams to unlock your full professional and personal potential, supporting clients across a broad spectrum of tax and social security topics.
• You will have the opportunity to apply your technical knowledge to challenging cases and assist in delivering presentations to clients and colleagues.
• You will lead complex tax consulting briefings with clients on intricate cross-border assignments, providing clear, practical advice on Swiss tax and social security implications, while building and maintaining client relationships as the primary point of contact and coordinating with international teams on multi-jurisdictional matters.

What You Bring

• Strong technical knowledge of Swiss national tax laws and international tax principles, including social security regulations related to cross-border mobility.
• A curious, proactive mindset with a willingness to take ownership and drive projects forward independently.
• Excellent teamwork and communication skills—both written and verbal—with the ability to explain complex tax matters clearly to clients and colleagues.
• Great analytical and problem-solving skills, with a keen attention to detail.
• Proficiency in MS Office applications and familiarity with tax software and digital tools.
• Ability to work effectively in a team-oriented, multicultural, and fast-paced environment.

Your Profile

• Bachelor's or master's degree in law, business, economics, finance or a similar field.
• 3-5 years' experience in individual taxation (German: Natürliche Personen) and social security law, gained in a trust/fiduciary practice, tax authority, social security administration, or consulting firm.
• Preferred experience (non-mandatory): Experience in global mobility, expatriate or international tax advisory, including cross-border work for multinational clients.
• Commitment to continuous learning and professional development.
• Fluency in German and English.
• MS Office proficiency.

Your Team

Join a dynamic and enthusiastic team at our Basel office. We not only enjoy analyzing numbers but also value spending quality time together through social events. Teamwork and cross-disciplinary collaboration across all business lines are at the heart of what we do.

Careers at Deloitte. Choose Your Impact.

At Deloitte, your ideas create impact and spark meaningful change for our clients, people, and society. Your unique expertise, background, and perspective help us find new ways to tackle the most complex challenges, brightening the futures of those our work affects. At Deloitte, you can build a career that inspires and energizes you.

Our commitment to corporate responsibility, sustainability, and diversity ensures that your work contributes to a better future.

In Switzerland, we provide industry-specific services in the areas of Audit & Assurance, Tax & Legal, Strategy, Risk & Transactions Advisory, and Technology & Transformation. With close to 3,000 employees at six locations, we serve companies and organizations of all sizes across all industry sectors. We offer meaningful and challenging work, a place where you can be yourself and where you will never stop growing.

You will benefit from flexible and hybrid working conditions, as well as well-being and parental programs.

Join us and become part of a global network of like-minded people dedicated to making a difference, whether by addressing climate change or improving 100 million futures by 2030. Apply online using the form below.

Only applications matching the job profile will be considered.

If you have any questions, please contact Lena at talent@deloitte.ch.

We do not accept applications from recruitment agencies for this position.

Deloitte Consulting AG and Deloitte AG are affiliates of Deloitte NSE LLP, a member firm of Deloitte Touche Tohmatsu Limited, a UK private company limited by guarantee (DTTL).