Aargau vs Basel-Stadt 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 | Basel-Stadt |
|---|---|---|
| Municipal tax multiplier (capital) | ≈97% (Aarau) | No municipal multiplier — the city is the canton |
| 3.5-room rent (CHF/month) | ≈ 2’300 | ≈ 2’900 |
| Health premium, adult (CHF/month) | ≈ 350 | ≈ 410 |
| Language zone | German-speaking | German-speaking |
| Rental market | One of the best value-for-space markets within commuting distance of Zürich and Basel. | Cheaper than Zürich or Geneva but still competitive; pharma hiring cycles drive demand in spring. |
| Commuting | Aarau to Zürich 35 min, Basel 35 min; Baden and Brugg are even closer to Zürich. | Basel SBB, Badischer Bahnhof and the French station put Germany and France within 15 min. Trams reach everywhere. |
| Culture | German-speaking and decentralised — no dominant city, so life is village-shaped. | German-speaking, with Basel dialect and a strong carnival/museum culture; French and German are both useful across the borders. |
Full breakdown
| Item | Aargau | Basel-Stadt | 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 Basel-Stadt
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 guideBasel-Stadt
Basel-Stadt is Switzerland's smallest full canton by area but punches far above its weight economically — Roche and Novartis are headquartered here and together with a dense pharma supply chain (Lonza, Syngenta, Bachem) make this the country's life-sciences capital. The canton has only three communes (Basel, Riehen, Bettingen), German is the working language, and the city's tri-border position with Germany and France shapes everything from grocery shopping to weekend airports. Wealth tax is among the highest in Switzerland, which matters more than the headline income rate for high earners.
Local insight
Almost every newcomer to Basel-Stadt arrives because of pharma. Roche's twin towers (Bau 1 and Bau 2) and the Novartis Campus dominate the riverfront and pull in scientists, clinicians, regulatory and IT staff from across the world. Below that layer sits a deep CRO/biotech sub-economy (Bachem in Bubendorf, Lonza in Visp/Basel, IDORSIA, Basilea) — meaning if pharma doesn't work out, you can usually find another pharma role without moving. Culturally the city is small enough that you bump into colleagues at Fasnacht, on the Rhine in summer, and at the Kunstmuseum on weekends. The big practical fact: most expats live in BS for the first year then move to BL for the lower rent and family-friendly communes.
Full Basel-Stadt relocation guideTry other salary levels
Other comparisons
People also asked
Which canton has lower taxes — Aargau or Basel-Stadt?▾
On a CHF 120’000 salary, Aargau leaves you with CHF 1’936 more take-home per year (2.4% difference) compared to Basel-Stadt.
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 Basel-Stadt?▾
On CHF 120’000, the effective rate in Basel-Stadt (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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