Biel/Bienne vs Sion

Sion leaves you CHF 2’911 more per year than Biel/Bienne (CHF 243 a month).iPer year, for the household and income above; median insurer; average rent for 2 rooms (single), 3 rooms (couple) or 4 rooms (family). Excludes commute costs. The better value in each row is highlighted.Hints, not a verdict; they don't change money left or the order. Rent > ⅓ income: 12 × the average net rent for your flat size is more than a third of your gross household income. Many landlords and agencies expect rent to stay within about a third of income; they usually count rent with service charges, which this figure leaves out, so the real share is higher. Vacancy < 0.5%: fewer than 1 in 200 dwellings stood empty and on offer on 1 June 2026 (BFS). The federal housing office sees the market in balance at about 1.5% and tight below 1%; below 0.5% flats are very hard to find. In small communes a few flats change the rate a lot.Source: Federal Tax Administration (FTA/ESTV), tax burden statistics 2026; reference date tax year 2026.Source: Federal Tax Administration (FTA/ESTV), tax multipliers 2026; reference date tax year 2026.Source: Federal Office of Public Health (FOPH), health insurance premiums 2027; reference date 2027 premiums (published Sept 2026).Source: Federal Statistical Office (FSO/BFS), Structural Survey 2023; reference date 2023 (Structural Survey).Source: Alliance SwissPass, tariffs T650, T654, T603; reference date T650 prices valid from 2023-12-10 (edition 2026-06-01); GA CHF 3995 (T654 edition 2026-06-01).All sources →