Valor Catastral: The cadastral value as the basis for IBI, Plusvalía and IRNR

Anyone who owns, buys or sells a property on Mallorca will inevitably come across the valor catastral – the official cadastral value that the Spanish tax authorities assign to every plot of land and building. This value appears on the IBI assessment, determines the calculation of the Plusvalía municipal on sale, and feeds into income tax for owner-occupiers and non-residents (IRPF/IRNR). Unlike the market price, the cadastral value is not renegotiated annually but is set by the Catastro in rare, complex procedures – and is generally well below the actual market value. In this guide you'll learn how the valor catastral is calculated, what it's specifically used for, how it differs from the newer Valor de Referencia, and what you can do if it seems too high to you.

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What exactly is the Valor Catastral?

The valor catastral is a tax value that the land registry offices (Catastro) set for every property in Spain. It does not describe the market value, but rather an objective, administrative assessment made up of several factors: location, plot size, construction costs, build quality, age of the property, type of use and – as one of several factors – the general market level of the zone. It is calculated by the Ministerio de Economía y Hacienda via the Dirección General del Catastro.

Important: The valor catastral is not determined individually for each transaction, but through so-called collective valuation procedures, which are only carried out at larger intervals and per municipality or property category. This explains why the cadastral value often remains stable for years, while market prices move considerably faster.

Note: In practice, the valor catastral is almost always below the actual sale price. This is precisely why, for a long time, it was not sufficient to prevent tax avoidance through artificially low purchase prices – one reason for the introduction of the Valor de Referencia in 2022.

What is the Valor Catastral used for?

The cadastral value is the basis for calculating several independent taxes – both municipal and national. Anyone who sells, rents out, or simply owns a property cannot avoid any of these items.

For landlords, it is particularly relevant that the cadastral value also serves as the basis for calculating the so-called "imputación de rentas" for periods when a second home is not rented out. You can find more details in the guide Taxing rental income for non-residents.

Valor Catastral, Valor de Referencia and market value compared

Since 1 January 2022, there has been a second, annually updated value, the Valor de Referencia, introduced on the basis of Ley 11/2021 (Ley de medidas de prevención y lucha contra el fraude fiscal). It is also set by the Dirección General del Catastro, but is based on real notarial sales data for the respective zone and is therefore much closer to the market value than the traditional valor catastral.

Please note: If the Valor de Referencia exceeds the agreed purchase price, the transaction tax (ITP) is still calculated on the basis of this higher value – regardless of what was actually paid. The Spanish Constitutional Court declared this system constitutional in its Ruling 13/2026 of 12 February 2026 and unanimously rejected the corresponding referral question.

You can find more on the specific calculation when buying in the guide Foreign Buyers in Mallorca.

The Valor Catastral for IBI purposes

IBI is the annual property tax levied by the Ayuntamiento and is calculated directly on the basis of the valor catastral. Since this value is set at different levels from one municipality to another and is reassessed at irregular intervals, the actual tax burden can vary considerably depending on location in Mallorca – even for comparable market values.

You can find detailed information on rates, due dates and possible reductions in the guides IBI Tax in Spain and IBI Reduction in Mallorca.

The Valor Catastral and the Plusvalía municipal on sale

The Plusvalía municipal (Impuesto sobre el Incremento de Valor de los Terrenos de Naturaleza Urbana, IIVTNU) is a municipal tax that taxes the increase in value of the land portion – not the building – between purchase and sale. The basis is expressly the Valor catastral del suelo, i.e. the land portion of the cadastral value.

The basic formula is:

Plusvalía = tax base (Valor catastral del suelo) × coefficient (holding period, max. 20 years) × municipal tax rate

Each Ayuntamiento sets the tax rate itself. Under Article 108 of the Real Decreto Legislativo 2/2004 (Ley Reguladora de las Haciendas Locales), it may not exceed 30 %; the specific rate is set out in the respective municipality's tax bylaw (ordenanza fiscal).

1. The seller and the notary determine the relevant Valor catastral del suelo from the most recent IBI notice.
2. The municipality calculates the coefficient based on the years of ownership.
3. The tax is usually filed with the Ayuntamiento via a gestoría.

Note: In principle, the seller is liable for payment. A different contractual arrangement between buyer and seller is possible, but rarely occurs in practice.

A complete overview of all selling-side costs can be found in the guide Taxes on property sales in Spain.

Valor Catastral for IRPF and IRNR

For owners who do not rent out their property year-round, a portion of the cadastral value is treated as a notional income from personal use and taxed via IRPF (residents) or IRNR (non-residents). Here too, the Valor catastral forms the calculation basis – not the market value and not the actual rental income. Anyone who rents out their property part-time should take this rule into account in their tax return, particularly regarding the interplay between rented and non-rented periods.

Details on the taxation of rental income for non-residents can be found in the guide Taxing rental income for non-residents. For owners who could become liable for wealth tax across borders, it's also worth taking a look at the guide Wealth tax when buying property.

Where can I find my Valor Catastral?

The cadastral value appears on every IBI notice (Recibo del IBI) sent annually by the Ayuntamiento. It can also be viewed via the Sede Electrónica del Catastro once the property's reference number or cadastral reference is known.

When verifying property data for a purchase, sale or financing, it's also worth checking the land registry. More on this in the guide Checking the land registry in Spain.

If the Valor Catastral seems too high: objection and clarification

If the assessed Valor catastral feels excessive – for example because it no longer reflects the condition or use of the property – an objection can generally be filed against the underlying notice. Since the cadastral value feeds directly into IBI and Plusvalía, a correction has a direct impact on several tax items.

Regarding the closely related Valor de Referencia, the Constitutional Court confirmed with Judgment 13/2026 of 12 February 2026 that the system as such is constitutional. The judgment also holds that the value can still be contested in individual cases, and that the taxpayer may present objections using any admissible means of evidence. Constitutional does not mean unassailable in the specific case. However, the value can only be contested once it is actually applied — that is, in connection with the taxed transaction, not as a precaution.

Note: Objections to cadastral values relate exclusively to the valor catastral itself, not to the calculation method of the respective tax. Anyone who is unsure should seek professional advice before deadlines expire.

For tax and legal questions relating to the purchase, it is generally advisable to involve a specialised lawyer at an early stage, see Lawyer for property purchase in Spain.

Most common mistakes when dealing with the Valor Catastral

• Confusing the valor catastral with the market value: Anyone who calculates a sale or financing based on the cadastral value instead of the actual market price regularly underestimates the real market value.
• Equating the valor catastral with the Valor de Referencia: Both values are set by the Catastro, but they serve different taxes and are updated at different intervals.
• Calculating the Plusvalía based on the total cadastral value instead of the land value: Only the Valor catastral del suelo is relevant.
• Relying on outdated IBI notices: Following a collective revaluation by the municipality, the value can change significantly.
• Overlooking notional income for owner-occupation: Non-residents in particular often forget that even without renting out the property, a tax charge based on the cadastral value still applies.

What comes next?

After buying a property, you should check the current Valor catastral as soon as the first IBI notice arrives – ideally together with a gestoría or local tax adviser. If you plan to rent out the property, it is also worth clarifying how periods of owner-occupation affect taxation via the cadastral value. Anyone planning to sell in the long term should keep an eye on the development of the Valor catastral del suelo, as it directly affects the later Plusvalía. If you are planning to move away or change your residence, special tax rules may also apply, see Exit tax Spain.

Checklist: Keeping the Valor Catastral under control

1. Check the current IBI notice and note the Valor catastral (land and building components).
2. Cross-check the cadastral reference via the Sede Electrónica del Catastro.
3. When planning a sale: have the Valor catastral del suelo ready for the Plusvalía calculation.
4. For rental/owner-occupation: clarify the impact on IRPF/IRNR with a tax adviser.
5. When buying: compare the Valor de Referencia with the agreed purchase price.
6. If in doubt about the amount: check appeal options within the deadline.

Conclusion

The valor catastral is not a niche topic for specialists, but the central calculation basis behind IBI, Plusvalía municipal and parts of income tax for owners and non-residents in Mallorca. Anyone who knows their current cadastral value, can distinguish the land value from the total value, and understands the difference to the newer Valor de Referencia avoids unpleasant surprises when it comes to tax assessments, sales or tax returns. Since values differ depending on the municipality and valuation method, an individual review is always worthwhile for larger transactions.

Official sources

• Constitutional Court, ruling 13/2026 of 12 February 2026 (Valor de Referencia) – https://www.boe.es/diario_boe/txt.php?id=BOE-A-2026-6480

• Ley 11/2021, de 9 de julio, de medidas de prevención y lucha contra el fraude fiscal – https://www.boe.es

• Dirección General del Catastro / Sede Electrónica del Catastro – https://www.sedecatastro.gob.es

• Agencia Estatal de Administración Tributaria (AEAT) – https://www.agenciatributaria.es

• Agència Tributària de les Illes Balears (ATIB) – https://www.atib.es