Solothurn Tax Return – Filed for You by Taxright
- Maximum deductions on your canton Solothurn tax return
- Simple, fully digital process. You're done in 6 minutes – we handle the rest
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Tax Return Solothurn – How much tax will I pay?
Your effective burden depends heavily on your municipality. Across 104 municipalities in five Amteien, tax multipliers in canton Solothurn vary noticeably — the cantonal average for 2026 is 118.2 percent.
| Net income (4500 Solothurn) | Total tax | Marginal tax rate |
|---|---|---|
| CHF 80’000 | CHF 14’848 | 28.6% |
| CHF 120’000 | CHF 27’199 | 33.6% |
| CHF 200’000 | CHF 55’726 | 38% |
Source: TaxWare. Net income after all tax deductions. Single person, no children, no religious affiliation, including federal, cantonal and communal tax. The rate shown is the marginal tax rate (the rate on your next franc earned), not the average effective rate. Your actual tax load depends on municipality and deductions — we check that individually.
Tax Return Solothurn Deductions
Every canton has its own quirks around tax deductions — here are a few important ones for canton Solothurn.
Tax Return Solothurn: Deadlines
The 2026 tax return must be filed in canton Solothurn by 31 March 2027. Access credentials or forms are sent out at the start of each year, and filing runs through eSteuern SO on my.so.ch.
Filing extension
A free extension is available online until 31 July, or against a CHF 30 fee until 30 November at the latest. If you hire us, we can take care of the extension for you.
Tax Office Canton Solothurn- approx. 292k Residents
- 104 Municipalities
- 31 March Filing deadline
- eSteuern SO Submission
What makes canton Solothurn different
104 municipalities across five Amteien
Canton Solothurn is divided into five Amteien with a total of 104 municipalities. In 2026, 16 municipalities are raising their tax multiplier, increasing the tax burden for around 58,000 residents.
Average tax multiplier rising in 2026
The average communal tax multiplier for individuals in 2026 is 118.2 percent, up from the previous year (117.4 percent). It's especially worth checking your own municipality.
Withholding tax and subsequent ordinary assessment
Many expats in Solothurn pay withholding tax (Quellensteuer) and don't realise a subsequent ordinary assessment is often worth requesting — for instance with pillar 3a contributions, further-education costs or property ownership. We calculate upfront whether filing that request pays off for you.
Your tax advisors for your Solothurn tax return
Max. deductions guaranteed
We maximize your deductions across 12 Swiss cantons.
10+ years Swiss tax experience
Over a decade of successfully handling the most complex tax cases.
Simple digital tax process
Our digital process guides you step by step — no printing, no office visits. Fully online.
We protect your most sensitive data
Tax returns include sensible data. We keep that data secure, private, and never sell it to third parties — aligned with Swiss nDSG & GDPR standards.
Trusted by expats across Switzerland
We handle foreign income, international assets, and complex cross-border tax situations with ease.
What our clients say
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„I handed my taxes over to Taxright and within a few days everything was done. The tax return was filed directly with the tax office. Truly a 5-star service.“
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Tax returns in other cantons
Taxright serves clients in 12 cantons. Pick your canton for the right deadlines, deductions and tax calculations.
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