neofidu.ch/en/communes/onex-ge
Coeff. 50.5%Taxes in Onex
Genève
Onex is a municipality in the canton of Genève. With 18'915 inhabitants and a density of 6731 inh./km2. The municipal coefficient is 50.5% (fiscal year 2026). Compared to other municipalities in the canton of Genève, Onex applies a relatively high municipal coefficient.
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18'915
6731 inh./km²
2.8 km²
Taxation in Onex
Municipal coefficient
50.5%
Fiscal year: 2026
Economy
Dominant sector: immobilier
View companies in OnexSource: FSO / LINDAS — Municipality code 6631
Tax estimation in Onex
In Switzerland, taxes are calculated by applying a municipal coefficient and a cantonal rate to a progressive tax scale. The exact amount depends on your income, family situation and applicable deductions.
In Switzerland, taxes are calculated by applying these coefficients to a progressive cantonal scale, not directly on income. Learn more
Economic fabric
626 active companies are registered in this municipality.
View companies in the ObservatoryDominant sector: immobilier
Main tax deductions (GE)
| Type | Amount / Limit |
|---|---|
| Meal expenses | CHF 15/day |
| Commuting expenses (home to work) | |
| Train / public transport | Actual costs (TPG, SBB subscription) |
| Car | Actual justified costs only (no per-km rate) |
| Bicycle | Not deductible |
| Transport cap | No fixed cap (actual costs) |
| Property maintenance | Flat 10% or actual costs |
| Pillar 3a | CHF 7,258 (employed) / CHF 36,288 (self-employed) |
Indicative amounts for the current fiscal year. Canton GE page
Frequently asked questions
What is the tax rate in Onex?
The municipal coefficient is 50.5%. These coefficients are applied to the cantonal base tax (progressive scale), not directly on your income.
How many inhabitants does Onex have?
Onex has 18.9k inhabitants, over an area of 2.81 km².
How to file a tax return in Onex?
Residents of Onex can entrust their tax return to NeoFidu, a Swiss online fiduciary, from CHF 149.