About Us
About Arithma
Experienced Advisors. Personal Approach.
At Arithma, we recognise that clients have many choices when selecting an accountant or advisor. With over 20 years of combined partner experience supporting businesses and individuals across the UK and internationally, we have built a reputation for practical advice, trusted relationships, and exceptional client service. What sets us apart is our commitment to supporting clients through every stage of their business and financial journey.
Our partner-led approach ensures that every client benefits from senior expertise and a deep understanding of their unique circumstances. From compliance to complex advisory, we deliver solutions that are tailored, timely, and effective.
Partner-Led Approach
Every engagement is handled by experienced professionals with direct involvement from partners.
Deep Technical Expertise
Strong capabilities in tax planning, business advisory, and complex financial structures.
Client-Centric Service
We build long-term relationships based on trust, responsiveness, and practical advice.
£100M+
Transactions & Advisory Exposure
500+
Clients Across UK & International
Multi-Sector Expertise
From SMEs to HNWIs
20+
Years Combined Partner Experience
The Team
Our Experts
Hiten Shah, ACCA
Tax Partner
Hiten is a highly experienced tax partner specialising in strategic tax planning for individuals and businesses. His expertise includes non-domicile taxation, offshore structuring, and managing HMRC investigations.
Upen Shah, ACA
Advisory & Audit Partner
Upen is an advisory and audit partner with extensive experience supporting businesses across a range of sectors. He specialises in business advisory, complex transactions, and advising professional service clients, including medical consultants.
Our Approach
A Partner, Not Just an Accountant
By understanding your business objectives and financial challenges, we provide practical advice and ongoing support designed to help you grow with confidence.
How We Deliver Value
Our approach is built around responsiveness, practical advice, and long-term relationships that help clients achieve financial clarity and sustainable success.
- Partner-led engagement on every assignment
- Tailored advice — no one-size-fits-all solutions
- Strong expertise in complex tax matters
- Responsive and relationship-driven support
WHO WE WORK WITH
Supporting Clients Across the UK and Internationally
We work with owner-managed businesses, high-net-worth individuals, property investors, medical professionals, and international clients, providing specialist accounting, tax, and advisory services.
Owner-Managed Businesses
Supporting growth, compliance, and strategic decision-making.
High Net Worth Individuals
Personal tax planning, wealth structuring, and advisory support.
Property Investors & Developers
Supporting property acquisitions, tax planning, and investment structuring.
International & Non-Domiciled Clients
Cross-border tax solutions and specialist advisory services.
Medical & Healthcare Professionals
Specialist support for consultants, practices, and healthcare businesses.
Professional Service Firms
Specialist accounting, tax, and advisory support for growing firms.
Why Choose Arithma
Why Clients Choose Arithma
At Arithma, we recognise that clients have many choices when selecting an accountant or advisor. What sets us apart is our commitment to building long-term relationships, providing practical advice, and supporting clients through every stage of their business and financial journey.
Relationship-Driven Approach
We build lasting relationships based on trust, responsiveness, and genuine understanding of our clients' goals.
Support Through Every Growth Stage
From start-ups to established businesses, we provide support through every stage of growth and development.
Commitment to Quality & Service
We strive to exceed expectations through accuracy, professionalism, and exceptional client service.
Partner-Led Engagement
Direct access to experienced partners who understand your business and provide practical guidance.
Practical & Responsive Support
Timely advice and support tailored to your circumstances, helping you make confident decisions.
Multi-Sector Experience
Extensive experience supporting businesses, professionals, and individuals across diverse sectors.