Withholding tax canton of Solothurn 2026
Calculate withholding tax in the canton of Solothurn — by tariff code, number of children and church tax, with the official FTA tariffs 2026.
| Effective tax rate | 12.6% |
| Withholding tax per year | CHF 9'820.20 |
| Net salary per month | CHF 5'681.65 |
Tariff code A0N · monthly gross salary as the basis
Withholding tax in the canton of Solothurn
Solothurn taxes employees at source under the monthly model and publishes the tariffs with and without church tax. As one of the eight cantons bound by the special agreement with France (tariff SF), a particular rule applies to certain cross-border commuters. For commuters towards the Basel and Bern areas, Solothurn is a middle way for tax — this shows in withholding tax too.
Key facts 2026
| Calculation model | monthly model |
| Church tax | with and without church tax |
| Tariff codes | A, B, C, H |
| Example: CHF 6'000/month (single) | CHF 711 (11.8%) |
| Example: CHF 8'000/month (single) | CHF 1'154 (14.4%) |
| Example: CHF 10'000/month (single) | CHF 1'640 (16.4%) |
Withholding tax in Solothurn in practice
Solothurn lies in the catchment of several economic areas at once: Basel to the north, Bern and Biel to the west, Olten as a rail hub in the middle. Many people taxed at source therefore commute across the cantonal border — yet the Solothurn tariff applies as soon as residence is in the canton.
What the tariff code changes in Solothurn
CHF 8'000 gross salary per month in the canton of Solothurn, six family situations — under the SO tariff 2026:
| Situation | Code | Withholding tax |
|---|---|---|
| Single, no children | A0N | CHF 1'153.60 |
| Married, single earner, no children | B0N | CHF 729.60 |
| Married, single earner, two children | B2N | CHF 312.80 |
| Married, dual earners, no children | C0N | CHF 1'120.80 |
| Married, dual earners, two children | C2N | CHF 844.00 |
| Single parent, one child | H1N | CHF 556.80 |
Spread in Solothurn: CHF 597 per month at an identical salary — CHF 7'162 over a year. Check the code on your payslip.
How the rate climbs with the salary
Single, no children, tariff A0N, canton of Solothurn:
| Gross salary / month | Rate | Withholding tax |
|---|---|---|
| CHF 4'000 | 7.6% | CHF 304.80 |
| CHF 6'000 | 11.8% | CHF 711.00 |
| CHF 8'000 | 14.4% | CHF 1'153.60 |
| CHF 12'000 | 18.1% | CHF 2'172.00 |
| CHF 16'000 | 21.2% | CHF 3'395.20 |
The salary quadruples; withholding tax in Solothurn rises from CHF 305 to CHF 3'395 — the rate from 7.6% to 21.2%.
Solothurn against the other cantons
At CHF 8'000 gross per month (single, no children, no church tax), Solothurn sits at rank 23 of 26, counting from the cheapest canton to the most expensive.
- Cheapest canton: Zug at CHF 338.40 per month (CHF 815 less than in Solothurn)
- Most expensive canton: Neuchâtel at CHF 1'234.40 per month (CHF 81 more than in Solothurn)
- Solothurn: CHF 1'153.60 per month, or CHF 13'843 a year.
Every canton side by side: withholding tax comparison. Paid too much? A tariff correction or subsequent ordinary assessment with the Solothurn tax administration runs until 31 March of the following year — the guidewithholding tax or ordinary assessment explains how.
Frequently asked questions
Under which model is withholding tax calculated in the canton of Solothurn?
The canton of Solothurn calculates under the monthly model. The tariffs include cantonal, municipal and federal tax and are published with and without church tax. The gross salary is decisive; for your salary, use the calculator above.
How high is withholding tax in Solothurn at CHF 8'000 per month?
A single person without children pays in Solothurn, at CHF 8'000 gross monthly salary, about CHF 1'154 withholding tax (14.4% effective). With children, married or with church tax the rate shifts — the calculator above shows your case.
Does a special tariff apply to cross-border commuters in the canton of Solothurn?
For cross-border commuters from France under the special agreement the SF tariff applies. For all other employees taxed at source, the ordinary tariffs A/B/C/H apply, which the calculator above reproduces.
I live in Solothurn and work in Basel — which tariff applies?
The Solothurn tariff, because the canton of residence governs withholding tax. Your Basel employer withholds the tax and remits it to the canton of Solothurn. Only residence abroad would make the canton of work competent.
Ordinary income tax in the canton of Solothurn: tax calculator Solothurn. Social-security contributions on the salary: salary calculator. All cantons:withholding tax calculator.
Sources: 2026 withholding-tax tariffs:FTA / tax administration of the canton of Solothurn. The tariff content is the canton's responsibility. Methodology: methodology.
Last updated: 13.07.2026 · 2026 data