About Taxolution.
We’re an English-first, expat-only Swiss tax advisory. Built for people who moved here for work, love, or weather, and now have to file in a system that wasn’t designed for them.
🐈 Cat fanatic and tech nerd
🚀 Restless when a new idea comes to mind
🏗️ Builds the systems behind the firm
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Ron Rosenwasser
CEO
🧘🏻♀️ Yoga devotee and real-life balancer
⌚ Precision worker, operates like Swiss timepiece
🌊 Work-family artist, often found in Sri Lanka
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Bianca von Bergen
Operations Lead · IWA Specialist
🎓 Aced even the hardest Swiss tax diploma
👨🏻🎨 Writes tax rulings that could be considered art
✈️ Traded Swiss landscapes for worldwide adventures
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Lukas Inderkum
Tax Specialist
⛹🏼♂️ Tax return maestro with a passion for finance and fitness
🐅 Efficiency beast when it comes to tax return filings
🇲🇦 Multilingual, fluent in English, Arabic, French
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Achraf Lahbib
Tax Specialist
🥋 Martial arts enthusiast and part-time chef
🧮 Aspiring tax professional
🎓 Recent business-law graduate (BSc 2025) with a sharp eye for the professional world
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Alfonso Gomez
Tax Assistant
🧬 Former bio-molecular scientist with a co-authored article in Nature
📚 Literature enthusiast, from classics to modern works
👗 Fashion aficionado, spotting trends and timeless looks
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Lera Seeberger
Content Manager
🏎️ Skilled in managing fast-paced work settings
🌊 Cool-headed problem solver, guiding through tough times
🐈 Fellow cat fanatic, sharing the love for our feline friends
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Lea Bobst
HR
We built Taxolution because expats were stuck choosing between Big-4 prices and German-only Treuhänder.
Expats had two choices. The Big-4, where filings are outsourced abroad and the process is built for internal compliance, not user experience. Or a local Treuhänder, mostly on paper, no automations, and not always familiar with the situations expats actually face. Neither option was built for someone who just wants to know whether they must or should file, what happens to their employment stock, and whether buying property is worth it.
So we built a firm that strives to make taxes easier and clearer for expats. English-first by default, flat-rate by design, and digital from the first email to the final assessment notice. Nine years in, that promise is still what every workflow, every hire, and every product decision has to answer to.
Our journey
From hypothesis to platform.
Same thesis since day one. Expats deserve modern, English-first Swiss tax. What changed is how we deliver it.
Filling the gap.
Ron built Taxolution while still in business-law studies, to test whether expats actually wanted a modern, English-first Swiss tax advisor. They did, and quickly.
Meeting the demand.
Word-of-mouth in expat circles took off. Hundreds of tax filings, mostly handled with precise manual work and a growing team. We added checklists, templates, and structured intake to keep quality steady as volume scaled.
Building the rails.
Manual at scale started showing strain. We built our own internal portal to administer cases properly: every filing tracked, every document in one place. The foundation for what came next.
Spearheading Swiss tax tech.
A custom CRM behind the scenes, automations doing the repetitive work, and MyTaxolution: our client-facing portal where filings, status, documents, and communication all live in one place. Clients onboard, file, and check status entirely digitally, and the system gets sharper every quarter.
Behind the firm
Taxolution at the center.
Taxolution is the firm. Around it sit the structural relationships that make it work: a long-standing development partner in the Netherlands for the platform, and DYN Advisory AG (a joint venture with DYN Group) for corporate accounting and fiduciary work. Ron is the connecting thread; the teams collaborate.
Private tax for expats
Taxolution Advisory GmbH
Powered by
- Tax & operations specialists
- Founder-built internal automations
- Dev partnership for the platform
DYN Group · Romandie · 40+
Tax · Accounting · Insurance · Pensions
Joint venture · Ron + DYN Group
DYN Advisory AG
Business services
- Accounting, payroll, VAT, year-end
- Fiduciary services
- Powered by DYN Group’s 40+ team
+ DYN Assure SA and other DYN Group entities
Ron Rosenwasser
Founded Taxolution in 2017. Co-owner of DYN Advisory AG, the link between the two firms.
Tech partner · 6+ years
Development team
Ron leads design, functions, and implementation. The Dutch team builds it together with him.
What we believe
Five principles, each backed by something you can verify.
Values are easy to claim. We’ll show you proof.
Straightshooter
If filing this year would cost you more than it saves, we’ll tell you to skip it.
Transparent
Flat-rate pricing with an instant quote in a few clicks. No retainers, no surprises.
Culturally aware
Clients served from over 30 national backgrounds and all possible family situations.
Integrity & trust
Striving for secure, personal service. The industry’s highest rating reflects that.
Client-led innovation
A new MyTaxolution feature ships every two months. Each one makes Swiss taxes easier for expats.
How we're different
Why expats choose us over the alternatives.
Eleven things that matter to an expat tax client, side-by-side. Decide for yourself.
| Features | Taxolution | Traditional Fiduciaries | Big-4 |
|---|---|---|---|
| Inter-cantonal understanding | |||
| Specialization on expats | |||
| Easy digital onboarding | |||
| Tax portal to manage affairs | |||
| Personalized client experience | |||
| Competitive pricing | |||
| Transparent flat-rate pricing | |||
| Consistent high ratings | |||
| Swift turnarounds | |||
| Tax return available in English | |||
| Proactive tax optimization |
Join 2,000+ Clients With Our Swiss Tax Service
- Optimize your tax position
- Coverage in every canton
- Optimization recommendations after the first call
- Digital-first filing through our tax portal