Selling your main residence triggers the tax on real estate profits and gains — the IBGI in Geneva. But if the proceeds of the sale are used to buy another main residence in Switzerland, this tax can be deferred. This is reinvestment relief, one of the most effective — and most misunderstood — tax mechanisms in a homeowner’s journey.
The principle: a deferral, not an exemption
Reinvestment relief does not make the tax disappear: it postpones it. If the replacement property is later resold, the deferred gain AND the new gain will be taxed — unless a further reinvestment relief is granted. Some cantons, such as Neuchâtel, allow such successive reinvestments in a chain: the tax is then only paid on the first sale not followed by a repurchase.
Since a 2018 Federal Supreme Court ruling, it is the canton where the replacement property is located that has the exclusive right to tax the deferred gain — not the canton of the property sold.
The five conditions
- The seller of the replaced property and the buyer of the replacement property are the same person;
- both properties serve their own, lasting and exclusive use — in most cantons, the main residence;
- the gain from the sale is reinvested, in whole or in part, in the acquisition or construction of the replacement property;
- the repurchase takes place within the deadline set by the canton of the property sold;
- the replacement property is located in Switzerland.
Selling undeveloped land does not give rise to a right to reinvestment relief — it could not have served as a main residence. However, the replacement property may be a plot of land, provided it is built on and lived in within the legal deadline.
The deadlines: 5 years in Geneva
Each canton sets its own. In Geneva, you have a maximum of 5 years after the sale to use the proceeds for a replacement property in Switzerland. Most cantons apply two years; the range runs from one to five years.
Watch out for a second deadline, often forgotten: the one for requesting reinvestment relief from the tax authorities. Each canton sets its own, and missing it means losing the right to the deferral — even if all the substantive conditions are met.
A worked example, from Vaud to Geneva
Mr A buys a flat for CHF 500’000 and resells it for CHF 800’000: a gain of CHF 300’000. He then buys, in co-ownership with B, a house for CHF 1’400’000 — his own investment amounts to CHF 700’000.
| Stage | Amount | Tax effect |
|---|---|---|
| Gain on sale (Vaud, short holding period) | CHF 300’000 | Taxed at 27%: CHF 81’000 paid |
| Portion of gain reinvested (700’000 − 500’000) | CHF 200’000 | Reinvestment relief granted: CHF 54’000 refunded |
| Portion not reinvested | CHF 100’000 | Remains taxed immediately |
When the Geneva house is resold years later, the Geneva tax authorities take into account the combined holding period of both properties to set the rate — in this example, the deferred gain and A’s new gain are taxed at 10% instead of 20%. Reinvestment relief has therefore not only deferred the tax: the combined holding period has reduced its rate.
Partial reinvestment relief: when the repurchase is cheaper
Only the portion of the gain actually reinvested benefits from the deferral, under the federal tax harmonisation law (LHID). Practical consequence: if you sell a large house to buy a flat cheaper than the purchase price of the house, there is no reinvestment relief at all — a case that is common at retirement, and one that comes as a surprise.
Buying before selling: possible in Geneva, under conditions
Few cantons allow this. Geneva accepts it if you can prove that the property sold was already for sale at the time the replacement property was purchased — a signed brokerage mandate or a listing published at an earlier date is sufficient — and if the sale takes place within 18 months of the purchase. Fribourg, for example, allows the deferral within a two-year period, before or after the sale.
A cash-flow point to anticipate: in some cantons, the tax is paid or held in escrow with the notary at the time of sale, and only refunded after you move into the replacement property. This liquidity may therefore be lacking at the time of purchase.
Two clocks are running, and not at the same speed
This is the most costly trap in the whole matter, because it is invisible. If your home was financed in part by an early withdrawal of 2nd pillar funds, the sale triggers a second obligation, entirely separate from the tax reinvestment relief: repayment of the early withdrawal is mandatory in the event of a sale. The pension fund wants to recover what it advanced.
A way out exists, but it is narrower than the tax authorities’ one. If you intend to reinvest in your own home the sale proceeds corresponding to the early withdrawal, you can transfer this amount to a vested-benefits institution — and there is no obligation to repay it, provided the proceeds are actually reinvested in a new home within two years. This regime is set out in Articles 30a to 30g of the LPP (Federal Law on Occupational Pensions) and in the OEPL ordinance.
Do the maths: in Geneva, tax reinvestment relief gives you five years to repurchase; pension provision gives you only two. A seller who relies on the tax deadline and takes their time can perfectly well comply with the reinvestment relief and still miss the OEPL deadline — in which case the early withdrawal must be repaid to the pension fund, in cash, at the precise moment when funds are lacking to buy. Both clocks start on the same day; it is the shorter one that dictates the search timetable.
In practice, for your project
And reinvestment relief has one very concrete consequence: you need to find a property — within five years, in Switzerland, for your main use. This is the half of the process that people forget to prepare. Our properties for sale on the Left Bank and our new-build projects are the starting point; and some of our sales appear nowhere else — off-market listings are often where the replacement property you couldn’t find turns out to be.
Reinvestment relief is prepared before the sale, not after: the timetable, proof of listing and the request to the tax authorities are decided early on. Our net seller proceeds simulator applies the Geneva IBGI scale to your situation, and the notary — who holds the tax in escrow — is your best technical ally on the matter. If your project starts with a sale, begin with a valuation based on real transactions. The terms used here are defined in the glossary.