Few taxes generate more confusion at the notary table than the *Impuesto sobre el Incremento de Valor de los Terrenos de Naturaleza Urbana* — known almost universally as plusvalía municipal. Sellers hear the word and assume a large, somewhat arbitrary bill is coming. Buyers occasionally assume they have no exposure at all. Neither instinct is entirely reliable in 2026, after a sequence of legal changes that fundamentally restructured how the tax is assessed and, in certain circumstances, whether it applies at all.
This piece works through the current mechanics as they operate in Andalusia — specifically across the municipios most relevant to high-value residential transactions: Marbella, Benahavís, Estepona, Ojén, Casares, and San Roque, which covers Sotogrande.
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What the Tax Actually Measures
Plusvalía municipal is a local tax levied on the increase in the cadastral value of the urban *land* component of a property during the period it has been held. It is not a tax on the total capital gain realised by the seller — that distinction matters enormously at the top end of the market, where the construction value of a villa can represent the majority of the purchase price while the land component is assessed at a cadastral figure that may be decades out of date.
The tax base is calculated from the *valor catastral del suelo* — the cadastral value attributed specifically to land, not buildings. This figure appears on the annual IBI receipt and is typically a fraction of market value. In Marbella's Golden Mile and Sierra Blanca, the cadastral land value used for this calculation is usually far below the market value of the land, depending on when the last general revision took place. Those base figures have not moved uniformly with the market.
The tax is a municipal tax. It is administered by the ayuntamiento, not the regional government in Seville or the central government in Madrid. The rates and coefficients within nationally set limits are set locally, which is why two adjacent municipios can produce materially different bills on comparable transactions.
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The 2021 Constitutional Reset and What It Changed
In October 2021, Spain's Constitutional Court issued ruling 182/2021, striking down two articles of the *Texto Refundido de la Ley de Haciendas Locales* that governed the old calculation method. The court found it unconstitutional to levy the tax in situations where no real gain in land value had occurred. The old objective method had calculated a gain regardless of market reality — if you sold at a loss, you still owed plusvalía.
The government responded with Royal Decree-Law 26/2021, which came into force on 10 November 2021. It introduced two parallel calculation methods and — critically — a genuine no-gain exemption.
The two current methods are:
**The Objective Method** applies coefficients to the cadastral land value. The law sets maximum coefficients by holding period, and each town hall may apply coefficients at or below those maximums; the resulting tax base is then multiplied by the local rate in the town hall's fiscal ordinance. Real Decreto-ley 26/2026 sets new maximum coefficients from 1 December 2026, provided Congress ratifies the decree — one more reason to take the figures from the town hall rather than from an article.
**The Real Gain Method** allows the seller to calculate the actual increase in the cadastral land value proportionally, based on the difference between acquisition price and sale price, then applying the land-to-total-value ratio from the cadastral record. If this method produces a lower tax base than the objective method, the taxpayer may choose it.
The right to choose the more favourable result is not automatic — the seller must actively declare using the preferred method and present supporting documentation.
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When the Liability Reaches Zero
The no-gain exemption introduced in 2021 is the most significant practical change for high-value transactions in Andalusia. If the seller can demonstrate that the land value has not increased between acquisition and disposal, no tax is owed.
Demonstrating this requires comparing the land component of the purchase price with the land component of the sale price. The land proportion is derived from the cadastral breakdown — specifically the ratio of *valor catastral del suelo* to total *valor catastral*. In practice, for properties purchased during certain years of the Spanish market correction — roughly 2010 through 2015 — sellers who acquired at peak-to-trough prices and are now selling above their acquisition price may nonetheless show no taxable gain on the land component alone, because the cadastral land value has been stable while the market recovery has been driven by construction quality and improvements.
There are also two statutory exemptions worth noting. Transfers between spouses, or to direct descendants as part of an inheritance or *herencia*, follow different rules — inheritance itself does not trigger plusvalía in the way a sale does, though subsequent onward sales restart the holding-period clock. Donations between parents and children do trigger the tax on the donor.
For properties held more than twenty years, the objective-method coefficients plateau. A seller in La Zagaleta or Cascada de Camoján who acquired in 2000 and sells in 2026 faces the same coefficient as one who acquired in 2001 — the twenty-year cap is a structural ceiling on the objective-method liability.
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What the Bill Depends On
No typical bill can honestly be quoted for a zone or for a price. The amount depends on the cadastral land value printed on the property's own IBI receipt, on the years it has been held, and on the coefficients and the rate in the town hall's current fiscal ordinance — three inputs that differ from one house to the next and between Marbella, Benahavís, Estepona and San Roque. The seller's lawyer computes it from those documents before the deed.
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Who Pays and When
In a standard private sale between two individuals, the seller pays the tax. It is owed to the ayuntamiento of the municipio where the property is located, not where either party resides. The declaration is due within thirty working days of the deed (Article 110.2 of the Haciendas Locales law) for inter vivos transfers (sales, donations). For inheritances, the period extends to six months from the date of death, with a possible extension to one year on request.
If the seller is a non-resident individual, the buyer is liable to the town hall in the seller's place (Article 106.2), so the amount is retained from the price. In practice the buyer's lawyer retains the sum at completion and pays the plusvalía directly. Any competent conveyancing solicitor operating in Andalusia will have a protocol for this.
The self-assessment form (*autoliquidación*) is filed at the local tax office — in Marbella, this is managed through the *Organismo Autónomo de Gestión Tributaria* rather than the ayuntamiento directly. The calculation, documentation, and payment can often be handled digitally if the seller holds a valid *certificado digital* or has authorised a gestor.
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A Note on Cadastral Revisions Ahead
A general cadastral revision, when a municipality carries one out, resets the cadastral values that this tax and IBI both start from. If one takes effect before a planned sale, the tax base for plusvalía can change even though the local rate and the coefficients do not.
For owners in La Zagaleta, El Madroñal, or Nueva Andalucía who are considering a sale within a five-to-seven-year horizon, the timing of any cadastral revision is a variable worth monitoring. The revision process is public and tracked through the *Dirección General del Catastro*.
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Plusvalía municipal rarely moves a transaction at the top of the Andalusian market. The amounts, properly calculated, tend to be modest relative to total consideration. What does occasionally create friction is the uncertainty — sellers who have received informal estimates, buyers who have heard anecdotes from a different municipio or a different decade. The tax has a specific current structure, a defined calculation methodology, and a genuine exemption for no-gain scenarios. Working through the actual numbers for a specific property, cadastral record in hand, usually converts an open question into a manageable line on the closing statement.