In Switzerland, the canton decides what your home costs you on the way in and on the way out

The property you already own abroad stays out of the Swiss tax base, but not out of the rate

Once you are resident in Switzerland, you are taxed on your worldwide income and wealth, with one structural exception: real estate abroad is excluded. Federal law says so for the direct federal tax, and the cantons follow the same rule; Schwyz, for example, writes it into its tax law in almost the same words. Rent from your flat in Munich or Vienna and the gain when you sell it are not taxed in Switzerland.

The property still counts. You declare it, with its value and the rental income, in your Swiss tax return, and Switzerland taxes your Swiss income and wealth at the rate that applies to your total. A large portfolio abroad therefore pushes up the rate on everything you hold in Switzerland. Debts and interest follow the Swiss allocation rules: they are split in proportion to where the assets lie, so a mortgage on the foreign property does not simply reduce your Swiss taxable wealth in full.

Two consequences for planning:

1. Keep a current valuation and the rental statements of every foreign property, because the Swiss return asks for them every year.
2. From 2029 a let flat abroad does not help your interest deduction for the direct federal tax: the new interest rule counts only let real estate in Switzerland. The details are on Swiss property tax and the 2029 reform.

How your home country taxes that property after you leave is a separate question, and it starts with the treaty between Switzerland and that country; see tax residence and treaties.

What the purchase costs you: transfer tax by canton

The Confederation levies no transfer tax. Cantons do, and the spread is wide. The Federal Tax Administration's overview (legal status 1 January 2022) shows:

• no transfer tax in Schwyz;
• only land-register and notarial fees in Zurich, Uri, Glarus, Zug and Schaffhausen;
• elsewhere a proportional tax that in most cantons lies between 10 and 33 per mille (1 to 3.3 percent) of the price, on top of the land-register fees.

Two cantons in detail:

Bern charges 1.8 percent. If the home will be your main residence, you can apply at the moment the purchase is filed with the land registry for the tax on the first CHF 800,000 of the price to be deferred. The land registry defers it for up to four years and secures it with a statutory lien. It is waived if you move in within one year (two years for a new build) and live there for at least two years without interruption, personally and exclusively. Within 30 days after the deferral ends you must prove it to the land registry without being asked. Miss the application at filing and the full 1.8 percent is due. Transfers to a spouse, registered partner or descendants, including on division of an estate, pay no Bern transfer tax.

Geneva charges 3 percent registration duty on the sale deed. For a main residence the duty is reduced by CHF 20,924 on purchases up to CHF 1,394,928 (amounts indexed from 1 March 2026), and the duty on the mortgage deeds is halved within the same limit. You must prove the use as main residence within two years of registration and then live there for three continuous years; otherwise the remaining duty becomes due at once.

On a CHF 1,500,000 house the gap is visible: no transfer tax in Zurich or Zug (fees only), CHF 27,000 in Bern before any main-residence relief, CHF 45,000 in Geneva. Ask the notary for the canton's figure in writing before you sign the reservation agreement, and diarise the deadlines for any main-residence relief on the day of purchase.

While you own: three annual taxes

Your Swiss home is part of your wealth tax, at its cantonal tax value minus the mortgage; some cantons and communes add a separate property tax on the gross value; and until the end of 2028 you pay income tax on the imputed rental value, against which you deduct mortgage interest and maintenance. That third tax is why Swiss owners have traditionally kept large mortgages, and it ends on 1 January 2029. Rates by canton, the 2029 reform and the new second-home taxes are on Swiss property tax; how the bank looks at the mortgage is on mortgages and the bank relationship.

What the sale costs you: real estate gains tax, with no exit by holding period

Private capital gains are tax-free at federal level, real estate included. Every canton, however, must tax real estate gains, and federal law obliges the cantons to tax short-term gains more heavily. There is no holding period after which the gain becomes tax-free; the longest holding only reduces the tax.

Zurich taxes the gain at progressive rates from 10 to 40 percent (40 percent on the part above CHF 100,000). The tax is increased by 50 percent if you sell within one year and by 25 percent within two years. After five full years it is reduced by 5 percent, rising by 3 points a year to a 50 percent reduction after 20 years.

Geneva taxes the whole gain at a rate set purely by holding period:

One deferral matters for owner-occupiers: if you sell a home you lived in permanently and exclusively and use the proceeds within a reasonable period to buy or build a replacement home for the same use in Switzerland, the gains tax is deferred. Buy the replacement abroad and the tax is due.

What to do: if there is any chance you will leave Switzerland or move canton within five years, model the exit before you buy. In Geneva a sale after 18 months costs half the gain; in Zurich the surcharge alone adds half the tax.

Inheritance and gifts: cantonal, with the transfer tax as a second layer

There is no federal inheritance or gift tax. Each canton decides: Schwyz, for example, levies neither an inheritance nor a gift tax, while other cantons tax heirs depending on how closely they are related. Which relatives are exempt where is on inheritance and gift tax.

Property adds a second layer: a transfer of real estate on death or by gift can be caught by the transfer tax as well. Many cantons exempt or reduce it for inheritance; Bern exempts spouses, registered partners and descendants entirely. Check both taxes for the canton where the property lies, not only the canton where you live.

Before you sign anything, in this order

1. Settle your residence status and the authorisation question on Lex Koller. As a buyer abroad, add the quota and location check with the cantonal authorisation office.
2. Get the commune's numbers in writing: transfer tax or fees, any property tax rate, and the canton's gains tax scale for your likely holding period.
3. Note the relief deadlines on day one: in Bern the main-residence application at filing, the one-year move-in and the two-year residence; in Geneva the two-year proof and three-year occupation.
4. Line up the financing on Swiss terms before you pay a reservation fee.
5. Prepare the tax return side: valuations and rental statements for every property abroad, and the purchase deed of the Swiss home for the first-time buyer rules that apply from 2029.

If you want the purchase, the canton and the exit worked through on your own numbers before you commit, book a consultation on your Swiss move.