What forfait fiscal is — and is not
Swiss lump-sum taxation, called forfait fiscal or Pauschalbesteuerung, is an expenditure-based tax regime. Instead of taxing your actual worldwide income and wealth, Switzerland taxes a deemed annual spending base. It is governed by Article 14 of the Federal Direct Tax Act and cantonal law. That makes it a powerful Swiss-side planning tool for a wealthy, non-working arrival — but it is a Swiss rule, not a US one.
Who can actually use it
- You cannot hold Swiss citizenship and must become Swiss tax resident for the first time or after at least 10 years abroad.
- You cannot be gainfully employed in Switzerland.
- The right ends if you later acquire Swiss citizenship or take up gainful employment.
How the deemed base is calculated
Switzerland does not tax your actual income; it taxes your annual worldwide living expenses. In practice, the base is the highest of three comparison figures: the federal minimum, seven times your annual rent or imputed rental value, or three times your annual full-board lodging cost if you live in a hotel. The 2026 federal minimum assessment base is CHF 435,000, indexed annually.
CHF 435,000
2026 federal minimum assessment base (indexed annually)
Cantonal floors vary sharply
The federal figure is only the starting point. Cantons set their own minima, and they differ widely: Valais and Fribourg sit around CHF 250,000, Ticino around CHF 400,000, Graubünden near the federal floor at roughly CHF 435,000, Vaud around CHF 450,000, Geneva around CHF 500,000, and Zug around CHF 750,000. Five cantons — Zurich, Basel-Stadt, Basel-Landschaft, Schaffhausen and Appenzell Ausserrhoden — have abolished the regime at cantonal level, leaving 21 of 26 cantons still offering it in 2026.
What you actually save on the Swiss side
The typical total Swiss bill on the deemed base runs roughly CHF 150,000–250,000 per year in the cheaper cantons and more in Vaud or Geneva. That is not a small number, but it can be far lower than ordinary Swiss income and wealth tax for someone whose actual global income and assets would otherwise produce a much larger local bill. Because the regime requires no gainful employment, it is only relevant for wealthy, non-working arrivals — retirees, investors and family-office principals.
Why the US bill does not disappear
A US citizen remains taxable on worldwide income no matter what Switzerland does. The US-Switzerland tax treaty's saving clause explicitly preserves US taxation of US citizens, so the forfait fiscal election changes your Swiss bill, not your US taxable income. You still owe FBAR and Form 8938 reporting on foreign accounts, and net investment income tax still applies to investment income if you meet the thresholds. If a Swiss pension scheme enters the picture, the reporting picture expands — see Swiss Pension Plans and US Taxes: Compliance Guide for American Expats.
The Form 1116 credit question
The central practical question is whether the Swiss lump-sum levy can be claimed as a foreign tax credit on Form 1116. Some advisers, including KPMG, take the view that it is not creditable because the tax is assessed by reference to your standard of living, not your actual income. Others argue it should qualify as an IRC 903 'in lieu of' tax. The 2022 final foreign-tax-credit regulations tightened IRC 903 by adding a jurisdictional nexus and sourcing-conformity requirement, which makes the 'in lieu of' argument harder. Swiss wealth tax, church tax and VAT are not creditable in any case. For a non-working lump-sum taxpayer, salary-based relief like the foreign earned income exclusion usually does not help, so the credit analysis matters even more — see our FEIE vs Foreign Tax Credit: The Switzerland Decision Guide for Americans.
A question for your cross-border advisor
Generic articles cannot tell you whether a specific lump-sum arrangement will credit on your US return. That depends on the cantonal assessment notice, your actual income composition and your treaty position. Get personal advice before relying on a credit.
Your next step if you are considering it
Forfait fiscal can be a legitimate Swiss-side planning tool for the right profile, but it creates a genuine US tax issue that many Swiss-only tax advisors never discuss. The constructive path is to model your Swiss bill under the lump-sum regime, compare it with ordinary Swiss taxation, and separately determine how much of the Swiss levy will survive US foreign-tax-credit scrutiny. At US Expat Wealth, we help Americans in Switzerland model both sides of that equation before they commit.