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Real Estate & Capital Gains

Real estate taxation in Switzerland includes capital gains tax on property (IBGI), imputed rental value, property tax, and wealth tax. We assist you during the purchase, ownership, or sale of property to optimize your tax burden. We precisely calculate deductions for maintenance costs, mortgage interest, and indirect amortization via pillar 3a.

Updated February 2026

Real estate taxation in Switzerland is a complex area that impacts every stage of a property owner's life: purchase, ownership, and sale. Good tax planning can generate significant savings over the long term.

At purchase: transfer duties vary from 0% to over 3% of the purchase price depending on the canton. Notary fees and intercalary interest during construction should be factored into the tax planning.

During ownership: the imputed rental value -- a notional income corresponding to approximately 60-70% of the market rent -- is added to your taxable income, even if you live in your own property. In return, you can deduct mortgage interest, maintenance costs (flat rate or actual costs), and building insurance premiums. The strategy is to alternate between the flat rate and actual costs depending on the year, grouping renovation work to maximize deductions.

At sale: capital gains tax on real estate (IBGI) applies to the difference between the sale price and the purchase price (including value-enhancing investments). The rate is degressive based on the holding period -- the longer you hold, the less you pay. A replacement purchase (reinvestment in another property) allows you to defer this tax.

Indirect amortization via pillar 3a allows you to maintain mortgage interest deductions while building up tax-deductible pension capital.

Our experts precisely calculate the tax impact of each option and recommend the optimal strategy for your situation.

Frequently asked questions

What is the imputed rental value and how is it calculated?
The imputed rental value is a notional income that property owners must declare, corresponding to the rent they could obtain on the market (generally 60-70% of the actual market rent). It is set by the cantonal tax authority and is added to your taxable income. In return, you can deduct mortgage interest and maintenance costs.
Is it better to deduct the flat rate or actual maintenance costs?
The flat rate generally represents 10-20% of the imputed rental value depending on the age of the building. If your actual maintenance costs (renovations, repairs) exceed this flat rate, opt for actual costs. The optimal strategy is to group renovation work into one year and alternate between the flat rate and actual costs.
How does indirect amortization via pillar 3a work?
Instead of directly repaying your mortgage, you contribute CHF 7,258/year into a pillar 3a account pledged in favor of the bank. You deduct both the mortgage interest (maintained because the principal is not repaid) and the 3a contributions. At maturity, the 3a capital repays the mortgage in a lump sum.

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