Aargau vs Solothurn Tax Comparison
Side-by-side income tax comparison on a CHF 120’000 salary — federal + cantonal + municipal tax, social contributions and take-home pay. Capital-city municipal multipliers, 2025/2026 rates.
Beyond tax: rent, premiums and daily life
| Factor | Aargau | Solothurn |
|---|---|---|
| Municipal tax multiplier (capital) | ≈97% (Aarau) | ≈118% (City of Solothurn) |
| 3.5-room rent (CHF/month) | ≈ 2’300 | ≈ 2’100 |
| Health premium, adult (CHF/month) | ≈ 350 | ≈ 330 |
| Language zone | German-speaking | German-speaking |
| Rental market | One of the best value-for-space markets within commuting distance of Zürich and Basel. | Affordable, with plenty of family housing in the Gäu and Wasseramt. |
| Commuting | Aarau to Zürich 35 min, Basel 35 min; Baden and Brugg are even closer to Zürich. | Solothurn to Bern 35 min, Olten 20 min, Zürich 1 h. |
| Culture | German-speaking and decentralised — no dominant city, so life is village-shaped. | German-speaking baroque town culture; Olten is the practical rail centre. |
Full breakdown
| Item | Aargau | Solothurn | Difference |
|---|---|---|---|
| Annual gross salary | CHF 120’000 | CHF 120’000 | — |
| Social contributions (AHV/ALV/BVG/NBU) | CHF 17’280 | CHF 17’280 | — |
| Total deductions | CHF 4’882 | CHF 4’882 | — |
| Taxable income | CHF 97’838 | CHF 97’838 | — |
| Federal direct tax | CHF 2’707 | CHF 2’707 | — |
| Cantonal + municipal tax | CHF 17’903 | CHF 19’839 | |
| Total tax | CHF 20’610 | CHF 22’546 | |
| Effective tax rate | 17.2% | 18.8% | |
| Marginal tax rate | 34.1% | 37.1% | |
| Take-home / year | CHF 82’110 | CHF 80’174 | |
| Take-home / month | CHF 6’842 | CHF 6’681 |
Figures are estimates using capital-city municipal multipliers and standard deductions. For binding numbers, use the official calculators linked above. Sources: ESTV (federal), cantonal tax administrations.
Living in Aargau vs Solothurn
Aargau
Aargau is the quiet workhorse of north-central Switzerland — a German-speaking canton wedged between Zurich, Basel and Lucerne, with no single dominant city but the densest motorway and S-Bahn network of any canton. The economy is built on energy (Axpo, the Beznau and Leibstadt nuclear plants), pharma logistics (Novartis in Stein), industrial engineering (ABB in Baden) and a long manufacturing belt along the Limmat and Aare. Tax pressure sits below the Swiss average and rental supply is meaningfully easier than ZH or ZG, which is why Aargau has quietly become the default commuter canton for Zurich and Basel workers priced out of those cities.
Local insight
Aargau's identity is that it doesn't have one — and that's the point. Baden plugs straight into Zurich on the SBB (15-minute Intercity), Rheinfelden plugs straight into Basel on the S1, and Aarau sits at the rail crossroads between both. The result is a canton full of dual-loyalty commuters: Zurich pay-scale, Aargau cost-of-living. The big private employers — ABB, Axpo, Roche in Stein, General Electric in Birr — are clustered in the same belt, which means many residents actually work inside the canton too. Lifestyle is suburban-Swiss with strong wine (the Schenkenbergertal), good Aare swimming in summer, and ski areas in the Jura 30 minutes away. The catch: cultural life is thinner than in any of the neighbouring city-cantons, so weekend trips to Zurich, Basel or Lucerne are part of the deal.
Full Aargau relocation guideSolothurn
Solothurn is the German-speaking Mittelland canton wedged between Bern, Aargau, Basel-Landschaft and Jura. The cantonal territory is unusually split — two main blocks separated by enclaves of Bern — which gives the canton an odd shape on a map but in practice means three economically distinct sub-regions. The baroque capital, also called Solothurn, sits on the Aare and is one of the best-preserved historic towns in Switzerland. Olten is the canton's rail hub (more InterCity trains pass through than almost any other Swiss station). Grenchen anchors the western watchmaking belt and is home to Breitling, ETA and several other industry names.
Local insight
Solothurn's defining feature is that it is a pure crossroads canton. Olten station is the rail centre of Switzerland — more InterCity trains pass through than anywhere except Zurich HB and Bern — which makes Olten itself an unusually good commuter base: 25 minutes to Bern, 30 minutes to Basel, 35 minutes to Zurich, all by direct IC. The downside of being a crossroads is that the canton doesn't have a single dominant economic identity. Grenchen is watchmaking (Breitling, ETA, Eterna, plus the long tail of suppliers). The capital Solothurn is administration, baroque-tourism and a small medtech cluster. The Schwarzbubenland in the north is functionally a Basel suburb. The Thal in the west is rural. Each sub-region effectively belongs to a different agglomeration — which is fine if you live in the right one for your job, and a long commute otherwise.
Full Solothurn relocation guideTry other salary levels
Other comparisons
People also asked
Which canton has lower taxes — Aargau or Solothurn?▾
On a CHF 120’000 salary, Aargau leaves you with CHF 1’936 more take-home per year (2.4% difference) compared to Solothurn.
What is the effective tax rate in Aargau?▾
On CHF 120’000, the effective rate in Aargau (capital city) is approximately 17.2%, including federal direct tax and cantonal/municipal tax.
What is the effective tax rate in Solothurn?▾
On CHF 120’000, the effective rate in Solothurn (capital city) is approximately 18.8%, including federal direct tax and cantonal/municipal tax.
Estimates only. Always verify with the official cantonal calculator before making a relocation decision.
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