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Due to Switzerland’s federal structure, the tax system is both complex and highly distinctive. Each canton and municipality applies its own tax rules, particularly regarding tax rates and allowable deductions. To ensure a minimum level of consistency across the country, tax authorities follow national frameworks such as the LIFD (Federal Act on Direct Federal Taxation) and the LHID (Federal Act on the Harmonisation of Direct Taxes).
Income tax is levied at the federal, cantonal, and municipal levels. Taxable income generally includes salaries, rental income, interest, and other sources of earnings. Taxpayers must declare all income and eligible deductions by the deadline, such as pension contributions, transportation costs, and health‑insurance premiums, to determine their taxable income.
In Switzerland, married couples are generally taxed jointly, whereas cohabiting partners are taxed individually. As a result, spouses’ incomes are combined, while cohabitants are assessed solely on their own earnings. This distinction can significantly affect a couple’s overall tax burden, especially when one partner earns considerably more than the other. Understanding these differences is therefore crucial when planning your finances.
Cantons and municipalities also levy wealth tax, calculated on the value of taxable assets, including savings, investments, and real estate (primary residence, investment property, etc.) after deducting outstanding debts.
Assets held abroad must also be declared. Under international tax rules, an individual’s country of residence is responsible for taxing all securities they hold, whether in Switzerland or abroad. Real estate, however, is always taxed in the country where the property is located. Swiss tax authorities nonetheless consider foreign real‑estate wealth and income to determine the applicable tax rate on Swiss assets, which can increase the effective tax rate. Double‑taxation agreements help prevent the same assets from being taxed twice.
In a country with such diverse tax systems across cantons, a solid understanding of cantonal tax regimes and tax‑optimisation strategies is essential.
Piguet Galland offers a complimentary wealth assessment to evaluate your overall situation and identify tailored strategies to help you optimise your tax position.