About Us
We’re ilumis. We do tax processes differently.
We’ve seen the biggest challenges in tax: arduous project plans, bloat, reams of red tape.
And we’d rather get straight to the point.
So we decided to make a change.
When we started ilumis, after years of experience working on complex tax challenges globally, we identified where our industry was failing. Then we agreed on three things that were vitally needed: to do things differently, move quickly, and remain in a constant state of evolution and improvement.
And we hold ourselves accountable every single day.
Our industry is at a crossroads, and with AI and regulatory change ahead, and we’ve chosen a brave path ahead with the right people to get there.
We want you to join us.
We’ve left the crossroads behind and started implementing what’s needed. Workflow that makes sense. Process excellence. And technology that fits with how you work.
Why? We want to propel our clients to greatness. Where their tax processes are more efficient and reliable, while remaining compliant.
Our aim is to create a more efficient tax industry, through exceptional processes and expert collaboration.
Our Vision
Our aim is to achieve tax that works effectively. Implemented with openness, excellence and expertise, so organisations can move forward with clarity and confidence.
Our Values
Driven by values that pioneer change
Clarity
We’re here to remove the difficult decisions, building trusting relationships and creating solutions that feel like a breath of fresh air.
Agile
We cut through the noise, delivering simple solutions at speed and adapting to the needs of our industry.
Optimistic
We’re a hopeful change in a tired industry, introducing processes that are efficient, enjoyable – and make the future feel a little brighter.
Warm
We care for our people, our clients, and aim to create a good quality of life for everyone involved.
Why Work With Us
A leading tax organisation transforming our industry
We’re proven. Established, growing and a recognised leading player in the tax industry. We’ve learnt all we can by leading in the biggest organisations and now we’re here to share our knowledge and spearheading our industry to a better future.
- We’re a lean team of the highest quality people
- We constantly improve our processes to ensure they’re the right fit for you
- We’re ultra-responsive and accessible, so you can receive the support you need, easily
- You’ll always receive access to our partner group, with over 70 years of combined experience across process excellence and technology
- We’re Cyber Essentials Plus certified, treating your data securely throughout any work we do
- We’re award nominated and were finalists in the 2026 Tolleys Taxation Awards
Explore industry solutions, meet renowned experts, and deep dive into our world.
- Blog
- Case Study
John Wiley & Sons Limited
- Blog
Tax audits: be ready for tomorrow’s enquiry
- Case Study
High-growth enterprise, energy sector
- Blog
Creating space: The impact of Freedom Fridays at ilumis
- Case Study
FTSE listed FMCG
A team of committed experts
We love difficult details, enormous challenges, and finding exciting solutions. You’ll find working with us a breath of fresh air, motivated and committed to our clients and offering a lighthearted and fun experience that has safety and compliance right at the centre.
From industry leaders to young people brimming with talent, we’re driven to deliver exceptional work that changes our industry.