What is the official value (tax value) of a property?

The official scales: How value is created

What exactly is the assessed value of a property for tax purposes?

Put simply: The tax value of a property is the amount at which your property is listed as an asset in your tax return.

Unlike stocks or bank accounts, whose value can be precisely determined, real estate must be appraised. The government cannot re-evaluate every house every year. Therefore, a standardized value is established. This assessed value of a property primarily serves to levy wealth tax. In many cantons, however, it also indirectly influences the imputed rental value tax (the fictitious income you have to pay taxes on because you live in your own home).

The calculation: A formula with many variables

How does the office arrive at this figure? The methods vary depending on the canton, but are mostly based on similar principles.

The assessed value of a property is generally composed of:

• Land value : The price of land per square meter, based on zoning plans and location classes.
• Building value: The current value of the building (volume multiplied by a construction price index, less depreciation due to age).

It's important to know that the assessed value of a property is often legally limited to a value that does not correspond to its full market value. The Federal Court has ruled that the assessed value of a property must generally be significantly lower than its market value, often by 70 to 90 percent. This is intended to prevent hardship, as property prices can fluctuate dramatically in the short term (a "safety margin").

Why the assessed value of a property is important

You shouldn't ignore this figure on your tax return. It has direct financial consequences.

• Wealth tax: The higher the assessed value of a property , the higher your taxable wealth. Since wealth tax is progressive, a reassessment can push you into a higher tax bracket.
• Imputed rental value: In many cantons, the imputed rental value is derived as a percentage of a property's assessed value or its market value. If the official value increases, your income tax burden often increases as well.
• Inheritances and gifts: When real estate is passed on within the family, the tax value of a property often serves as the basis for calculating advance inheritances or gift taxes (where these still exist).
• Sale: When selling a property, the assessed value is usually irrelevant for capital gains tax purposes (here, the difference between the purchase and sale price is what counts), but it can play a role in property transfer tax in certain cantons.

The cantonal spirit: Regional differences

Switzerland wouldn't be Switzerland without its federal differences. The term "tax value" of a property is not universally used.

• Canton of Bern: Here, the term "official value" is used. It is considered notoriously low, which is why it is often the subject of political debate.
• Canton of Zurich: Here, the tax value of a property is adjusted relatively regularly based on land value and current market value .
• Other cantons: Use terms such as "cadastral value" or "assessment value".

The adjustment cycles also vary. Some cantons conduct a general reassessment ("revision") every 10 to 15 years. During these years, all property owners receive new assessments of their property's assessed value . This often leads to objections, as values can rise dramatically during boom periods.

Difference to market value (fair market value)

It is the most common misconception among laypeople: "My house has a tax value of 800,000 francs, so I can sell it for 800,000 francs."

That's incorrect. The assessed value of a property almost always lags behind the market value.

When you sell a property, you achieve the market value. This is the result of supply and demand. In hot markets like Zurich or Geneva, the market value can be twice as high as the assessed value of a property .

Conversely, if you buy a property, don't be surprised if its assessed value on your tax return is much lower than the price you paid. This is normal and to your advantage (lower taxes).

What to do if the value seems too high?

Mistakes happen. Government offices work with formulas, not with home visits.

If your property's assessed value is newly determined and seems far too high to you (e.g., higher than the actual market value), you can file an objection.

Arguments could include:

• The situation is worse than expected (investment backlog).
• The location was incorrectly classified (e.g., noise pollution was not taken into account).
• The volume calculation is incorrect.

Since the assessed value of a property directly impacts your annual tax bill, it is often worthwhile to review the ruling.

The impact of renovations

Be careful with renovations. If you significantly increase the value of your house (e.g., extension, conservatory, attic conversion), you must report this. This usually leads to a reassessment. The assessed value of the property increases, and consequently, so do your taxes. Maintenance measures (painting, installing a new heating system of the same type), on the other hand, rarely result in an immediate increase in the assessed value of a property .

Conclusion

The assessed value of a property (or official value) is a purely tax-related figure. It's the government's tool for including your real estate in the wealth tax. Important for you: It's not the same as the selling price. It should be a "conservative estimate" and significantly below the current market value.

For property owners, it's worthwhile to carefully examine every new assessment of a property's assessed value . Is the increase justified? Are the figures accurate? Since this value serves as a multiplier for wealth tax and often also imputed rental value, it has a significant impact on your finances. Don't view it as a market analysis, but rather as a basis for taxation.

If you want to know how far the official valuation differs from the actual market value, or if you are looking for a realistic assessment for a sale, Loft offers you the necessary data and independent analyses to provide clarity.

Glossary

• Taxable value of a property: The officially determined value of a property, which serves as the basis for wealth tax (synonyms: official value, cadastral value).
• Imputed rental value: A notional income that homeowners must pay taxes on because they live in their own property. It often correlates with the assessed value of a property .
• Market value: The price that could be achieved in a sale under normal circumstances. It is usually higher than the assessed value of a property .
• Cadastral value: The term for the tax value of a property in certain cantons (e.g., Fribourg, Valais, Ticino).
• General reassessment: A periodic process (every 10-20 years) in which a canton adjusts the tax value of a property across the board to reflect market developments.