About

In many jurisdictions (especially in Europe and Latin America), property tax is not based on the fluctuating market price. It relies on the Cadastral Value. This is an administrative value assigned by the government. It is calculated using rigid formulas involving the property's physical characteristics and location. Market booms do not immediately affect this tax base. However, administrative re-evaluations can cause sudden spikes.

This calculator reconstructs the cadastral formula. It allows owners to verify their tax bill against government parameters. It applies specific coefficients for location quality, building age, and material type to a base unit value. This helps in identifying discrepancies in official records that could lead to successful tax appeals.

Formulas

The Cadastral Value (Vc) is the product of the base area value and a series of adjustment coefficients.

Vc = (A × B) × kloc × kage × kmat

Where A is Area (m²) and B is the municipal Base Price per m². The final tax is:

Tax = Vc × Rate%

Reference Data

Coefficient Type	Description	Typical Range	Impact
Location (kloc)	Proximity to city center/services	0.80 - 1.50	High
Age (kage)	Depreciation of structure	0.60 - 1.00	Medium
Conservation (kcon)	State of repair	0.80 - 1.10	Low
Surface (ksurf)	Adjustment for very small/large plots	0.90 - 1.20	Medium
Usage (kuse)	Residential vs Commercial	1.00 - 1.80	High
Floor Level (klvl)	Higher floors often valued higher	1.00 - 1.15	Low

Frequently Asked Questions

This is a price per square meter set by the municipality for a specific zone or neighborhood. It represents the theoretical cost of construction plus land value in that sector, before applying specific adjustments for the individual property.

Older buildings generally receive a reduction coefficient (less than 1.0) to account for depreciation and obsolescence. However, if a building undergoes major renovation, the cadastral record may be updated, resetting the age coefficient to 1.0.

Yes. If you can prove that the coefficients applied (e.g., area size or building material) are incorrect in the registry, you can file an administrative appeal. Using a tool like this helps verify if the math matches the official parameters.

Rarely. Cadastral value is usually 30% to 70% lower than market value. It serves strictly for tax purposes. However, in some transfers or inheritance tax calculations, the government may use whichever is higher.