Over 50,000 satisfied tax customers in Switzerland
Over 50,000 satisfied tax customers in Switzerland
Your tax return 2025
Reduce your tax burden – now 20 % off*
- Benefit from every deduction you’re entitled to
- Tailored optimisation for every life situation
- Now –20 % discount* for new customers
- Benefit from every deduction you’re entitled to
- Tailored optimisation for every life situation
- Now –20 % discount* for new customers
Get the most out of your tax return & save 20 %*
- Submit your request:
Complete the form in just 2 minutes – free and without obligation. - Schedule a consultation & upload your documents:
Easily in our client portal. - Review & preparation:
Our experts take care of your tax return. - Final tax return:
You receive your optimised and verified declaration.
Why you should optimise your tax return
We all have to pay taxes – but not more than necessary.
With CLARK, you can reduce your tax burden sustainably – and get 20 % off* your first tax return.
Our Swiss tax experts know every deduction and cantonal rule – from commuting expenses and insurance contributions to family allowances.
They ensure you get the maximum benefits – compliant, accurate, and transparent.
Your tax optimisation package – with 20 % discount*
Starting from CHF 99 – and 20 % off* for new customers.
Our all-in-one service package delivers maximum tax optimisation with minimal effort. With over 40 experts across Switzerland, we understand every cantonal difference and ensure you benefit from all possible deductions.
Individual & optimised
- Tailored calculation of your deductions
- Consideration of your personal life situation
- Review for potential tax advantages
Compliant & up to date
- Application of the latest cantonal regulations
- Correct filing and deadline extensions when needed
- Careful review before submission
Efficient & transparent
- Minimal effort for you
- Digital uploads instead of paperwork
- Clear overview of all your deduction opportunities
Get more back – pay less
Our CLARK tax experts know every deduction, allowance, and cantonal nuance.
They carefully review every detail so you don’t miss out – whether you’re employed, self-employed, or working abroad.
Everything is handled digitally, securely, and transparently – now 20 % off* for new clients.
Smart tax optimisation made simple
Our experts know the cantonal differences inside out.
Whether you live in Zurich, Basel, or Ticino – we know which deductions apply where and how to make the most of your tax return.
Online instead of paperwork
Answer a few simple questions, upload your documents, and our experts will handle the rest – quickly, securely and tax-optimised.
Optimised for your place of residence
Our specialists know your cantonal tax rules in detail. This ensures that no deductions are missed – whether you commute, have moved, or have special expenses.
Experts who understand your situation
If you have questions about deductions, deadlines, or optimisation options, you can easily reach our specialists by phone or email – professional and direct.
Next steps
- Enter your contact details & secure your 20 % discount*.
- Schedule your consultation & upload your tax documents.
- Receive your completed tax return & reduce your tax burden.
What our clients say
Over 50,000 people in Switzerland trust CLARK – for lower taxes and less hassle.
Have questions? We’ve got the answers.
What does the CLARK service cost?
The base price for new customers starts at CHF 99.– (depending on canton and complexity).
New customers currently receive 20 % off* their first tax return.
This includes a complete tax filing, document review, deadline extension, and assessment check.
How do I submit my documents?
Easily online – upload your documents securely through our client portal.
How does CLARK help reduce my tax burden?
Our experts review all possible deductions – from commuting and insurance to education costs – and tailor your return individually.
How long does the process take?
That depends on the complexity of your finances.
Once your documents are submitted, we prepare your tax return as quickly as possible without compromising accuracy.
How can I contact customer support?
Our support team is available via email (info@ch.clark.io) or phone (+41 (0) 61 821 22 33). We’re happy to answer your questions and assist with any concerns.
Which documents do I need for my tax return?
You’ll need income statements, expense receipts, donation confirmations, and other relevant tax documents.
We’ll provide a checklist to help you gather everything easily.
Get more back, pay less – now with 20 % off*
Our CLARK experts review your individual situation and ensure you don’t miss any deductions.
Start for free now and maximise your tax savings.
*The 20% discount applies to the tax declaration fee of a tax return for new customers (private individuals) as follows: Processing fee for unmarried private individuals without real estate: CHF 79.20 (instead of CHF 99.-). Processing fee for married couples as new customers: CHF 95.20 (instead of CHF 119.-). Additional costs per property in Switzerland or abroad: CHF 39.20 (instead of CHF 49.-). From 10 bank accounts & securities positions onwards, each additional position will be charged CHF 4.- (instead of CHF 5.-).