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Canton Solothurn · tax year 2025

Your Solothurn tax return, 2025

What Solothurn charges on your salary, what each of its 106 communes costs, and where its limits differ from federal law.

Filing app
eTax Solothurn
Deadline
31 March 2026Ask online or by email before 31 March: it is approved without a reply and free until 31 July 2026, and a reasoned request for up to 30 November 2026 costs CHF 30.
Communes
106Municipal rates from 65% to 145%
Build my guide freeWhat your commune costs

Your commune moves the bill more than you think

The canton levies its tax, then each commune adds its own rate on the same base. These bills come from the federal tax administration's 2025 calculator.

Household
Children
Gross salary

Solothurn · capital, 107%

CHF 15’997

Federal CHF 1’705 · Canton CHF 7’020 · Commune and personal tax CHF 7’272

Kammersrohr · lowest rate, 65%

CHF 13’162

Federal CHF 1’705 · Canton CHF 7’020 · Commune and personal tax CHF 4’437 · CHF 2’835 less than Solothurn

Bolken · highest rate, 145%

CHF 18’572

Federal CHF 1’705 · Canton CHF 7’020 · Commune and personal tax CHF 9’847 · CHF 2’575 more than Solothurn

  • Federal
  • Canton
  • Commune and personal tax
Estimated income tax in each commune

Hover or tap a commune.

Tap a commune to see its bill.

All 106 communes by municipal rate

Each dot is a commune. Solothurn is marked.

75%100%125%Solothurn 107%

Lowest: Kammersrohr 65%Highest: Bolken 145%

Income tax figures: federal tax administration calculator, tax year 2025, retrieved 2026-09-16. One earner aged 35, employment income, no wealth, no church tax, and the standard deductions the calculator applies.

Bills for Solothurn, Kammersrohr and Bolken are the calculator's own. Every other commune is scaled from the capital's base tax by that commune's rate, which matched the calculator to within CHF 40 where we checked.

Municipal rates: federal tax administration, tax year 2025. Boundaries: swisstopo.

Where Solothurn is not the federal number

Your return is assessed twice, once for cantonal tax and once for federal tax. The same receipt can be worth more on one than on the other.

  • Insurance premiums, single

    SolothurnCHF 2’500
    FederalCHF 1’800

    Without a pension fund or pillar 3a: CHF 3’750

    Plus CHF 650 per child (federal CHF 700)

    Higher in Solothurn

  • Insurance premiums, couple

    SolothurnCHF 5’000
    FederalCHF 3’700

    With no pension fund or pillar 3a payment on either side: CHF 7’500

    Plus CHF 650 per child (federal CHF 700)

    Higher in Solothurn

  • Third-party childcare

    SolothurnCHF 25’000
    FederalCHF 25’800

    Per child under 14. Meals and board do not count.

    Lower in Solothurn

  • Commuting

    SolothurnCHF 7’000
    FederalCHF 3’300
    Higher in Solothurn

  • Second-earner deduction

    SolothurnCHF 1’000
    Federalup to CHF 14’100
    Lower in Solothurn

The amounts above assume you pay into a pension fund or pillar 3a.

Deduction limits: Kanton Solothurn: Wegleitung zur Steuererklärung 2025, Ziffer 540 (Versicherungsprämien und Zinsen von Sparkapitalien); Steuerbuch § 41 Nr. 12. so.ch

Deduction limits: Kanton Solothurn: Wegleitung zur Steuererklärung 2025, Ziffer 570 (Durch Dritte betreute Kinder); Steuerbuch § 41 Nr. 4. so.ch

Deduction limits: Kanton Solothurn: Wegleitung zur Steuererklärung 2025, Ziffer 5059 (Fahrkosten zwischen Wohn- und Arbeitsort); Steuerbuch § 33 Nr. 1. so.ch

Deduction limits: Kanton Solothurn: Wegleitung zur Steuererklärung 2025, Ziffer 595 (Abzug bei Erwerbstätigkeit beider Ehegatten); Steuerbuch § 41 Nr. 3. so.ch

Deadline: Kanton Solothurn: Steuerbuch § 140 Nr. 2 (Abgabe der Steuererklärung, Version 14.08.2025); Steueramt, Fristverlängerungen und Steuererklärung 2025 (27.01.2026). Checked 2026-09-20

Let Solothurn's limits apply themselves

Upload your documents once. PaperTax applies Solothurn's own limits and tells you what to type into each field of eTax Solothurn. You still submit it yourself.

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