Solothurn · Bezirk Gösgen · BFS commune no. 2493^[7]

Lostorf

Left of CHF 100’000CHF 76’712per year, after tax and insurance

Income tax^[1]CHF 16’21016.2% of income

Health insurance^[3]CHF 590adult, per month

Residents^[4]4’11312.4% foreign nationals

Nearest job hub^[6]36 minto Olten

Single person, gross income CHF 100’000, median insurer. See how Lostorf ranks for your household →
Compare Lostorf with another commune →

Lostorf has 4’113 residents, making it the 21st largest of the 104 communes in the canton of Solothurn.

12% of residents are foreign nationals, below the Swiss average of 28%.

With 24% of residents aged 65 or over, the population is older than the Swiss average (20%).

A single person earning CHF 100’000 pays about CHF 16’210 a year in income tax here, less than in 6 of its 7 neighbouring communes.

The median standard adult health insurance premium is CHF 590 a month, above the Swiss median of CHF 564.

The closest of our job hubs by public transport is Olten, about 36 minutes away on a weekday morning.

Income tax

Income tax 2026 (federal, cantonal and communal; no church tax) for an employee with gross labour income of…^[1]

Profile	CHF 50’000	CHF 80’000	CHF 100’000	CHF 150’000	CHF 200’000	CHF 300’000
Single, no children	4’960 9.9%	11’485 14.4%	16’210 16.2%	30’032 20.0%	46’146 23.1%	80’706 26.9%
Married, single income, no children	1’638 3.3%	6’774 8.5%	10’917 10.9%	22’805 15.2%	37’920 19.0%	72’075 24.0%
Married, dual income (70/30), no children	1’322 2.6%	6’170 7.7%	10’267 10.3%	21’638 14.4%	35’102 17.6%	68’550 22.9%
Married, single income, 2 children	60 0.1%	2’426 3.0%	5’754 5.8%	16’793 11.2%	30’886 15.4%	64’608 21.5%

Tax multipliers 2026: canton 104%, commune 113%. Church tax, if you are a member: Protestant 17%, Roman Catholic 18%.^[2]

Health insurance premiums 2027

Monthly basic insurance premium, standard model, single premium region of Solothurn.^[3]

	Cheapest insurer	Median insurer
Adult (26+), CHF 300 deductible, without accident cover	CHF 553	CHF 590
Child (0–18), CHF 0 deductible, with accident cover	CHF 128	CHF 149

Commute to job hubs

Median door-to-door time by public transport and on foot, weekday departures every minute 07:00–08:30, from the commune's busiest station. Includes waiting for the next departure.^[6]

Hub	Minutes
Olten	36
Aarau	46
Liestal	67
Basel SBB	76
Solothurn	77
Muttenz	77
Zürich HB	80
Baden	81

Hubs more than 3 hours away are not listed. Commute to any commune or postcode: Ranking →

Compared with neighbouring communes

Single person, gross income CHF 100’000: income tax per year and median adult premium per month (CHF).

Commune	Tax CHF/yr^[1]	Premium CHF/mo^[3]	Population^[4]
Niedergösgen	16’009	590	4’297
Lostorf	16’210	590	4’113
ZeglingenBL	16’628	619	535
Obergösgen	16’810	590	2’553
Wisen (SO)	16’840	590	451
Stüsslingen	17’010	590	1’265
Winznau	17’356	590	2’061
Trimbach	18’061	590	6’928

Population

Residents4’113^[4]

Foreign nationals12.4%

Aged 0–1919.1%

Aged 20–6457.4%

Aged 65+23.5%

Area13.25 km²^[5]

Sources

Source: Federal Tax Administration (FTA/ESTV), tax burden statistics 2026. Tax burden in the communes, tax year 2026; reference date tax year 2026; downloaded 2026-11-03. Licence.
Source: Federal Tax Administration (FTA/ESTV), tax multipliers 2026. Tax multipliers (income tax), tax year 2026; reference date tax year 2026; downloaded 2026-11-03. Licence.
Source: Federal Office of Public Health (FOPH), health insurance premiums 2027. Health insurance premiums 2027 (mandatory basic insurance); reference date 2027 premiums (published Sept 2026); downloaded 2026-11-03. Licence.
Source: Federal Statistical Office (FSO/BFS), STATPOP 2025. Permanent resident population (STATPOP) 2025; reference date 2025-12-31; downloaded 2026-11-03. Licence.
Timetable: opentransportdata.swiss; walking network © OpenStreetMap contributors. Public transport commute to job hubs (computed); reference date timetable fahrplan-2026-gtfs2020, 2026-11-03 07:00–08:30; downloaded 2026-11-02. Licence.
Source: Federal Statistical Office (FSO/BFS), Swiss official commune register. Swiss official commune register (historicized); reference date 2026-11-03; downloaded 2026-11-03. Licence.
Wikimedia Commons. Coats of arms of Swiss communes; reference date 2026-11-03; downloaded 2026-11-03. Licence.

Coat of arms: Lostorf-blazon.svg, Unknown, Public domain. Shown to identify the commune; Vicinus is not affiliated with it.