Your first Swiss tax year

The arrival-year rule, which is the one newcomers most need

Two common English versions are wrong: that you pay a full year of tax in your arrival year, and that you pay pro rata at the pro rata rate. The actual rule is the third option. Only the income you actually earned in the part-year is taxed, but the rate is set on the annualised figure.

The Federal Tax Administration's own worked example: you arrive from abroad on 1 July on a salary of CHF 5,000 a month with no other income. Your taxable income for the year is CHF 30,000. The rate applied is the one for a theoretical annual income of CHF 60,000.

Residence starts after at least 30 days in Switzerland with gainful employment, or 90 days without.

Moving between cantons is not a split year

Liability exists for the whole tax period in the canton where you are resident at the end of it. You pay the full year to the canton you moved to, owe nothing to the one you left, and any provisional instalments already paid in the old canton are refunded.

English content telling people to expect two partial cantonal bills after an internal move is simply misinforming them.

The timing shock

Switzerland assesses after the tax period ends, so a 2025 return is completed in 2026 and the 2025 tax is paid in 2026. If you arrive in year one and budget nothing, year two arrives with a bill for a year you have already spent.

Twenty-five of twenty-six cantons bill provisionally during the tax year — based on a previous assessment you do not have as a newcomer, or on an estimate you have to supply yourself. The schedules differ radically. Zurich takes three instalments and runs interest from 30 September of the tax year itself. Geneva and Vaud take twelve monthly instalments set in advance. Zug bills once at the end of June, payable by 31 December. Bern takes three instalments at 40, 70 and 100 percent, due 20 May, 20 August and 20 November.

Basel-Stadt is the outlier and the trap: nothing at all during the year, and then the whole cantonal tax is due on 31 May of the following year, regardless of when you filed or when the bill arrived.

Direct federal tax falls due on 1 March of the year following the tax year, with a thirty-day grace period.

Two recent votes that English content gets wrong in both directions

Imputed rental value on owner-occupied property is being abolished, but not yet. It was approved on 28 September 2025 with 57.7 percent in favour, and on 1 April 2026 the Federal Council fixed entry into force at 1 January 2029. It therefore applies in full for the 2026, 2027 and 2028 tax years. Both errors are already circulating: pages saying it is gone, and pages describing it as a permanent feature of Swiss law.

Individual taxation was approved on 8 March 2026 with 54.23 percent in favour, and comes into force by 2032 at the latest. The Federal Council may set an earlier date and, as things stand, has not. Joint assessment and the marriage penalty are the law today. Content saying individual taxation starts in 2026 or 2027 is wrong.

Why the English guidance drifts

The numbers a newcomer most needs — this year's federal thresholds, this canton's deadline, this canton's extension fee, this canton's payment calendar and interest rates — exist only behind a German, French or Italian page. That language gap is the structural cause of the drift, and it is the clearest opening for an accurate English guide.