The Impuesto sobre Bienes Inmuebles (IBI) is an ongoing annual municipal tax owed by whoever owns a property in Spain on 1 January each year, calculated as the property's official cadastral value (valor catastral) multiplied by a tax rate (tipo de gravamen) that each town hall (ayuntamiento) sets within limits fixed by national law. It is separate from, and in addition to, any one-time purchase tax (ITP) paid at acquisition. Property owners with a high property-heavy net worth may also need to consider the separate Impuesto sobre el Patrimonio (wealth tax), which varies significantly by autonomous community and carries a 100% rebate in some regions.
IBI is a recurring cost of owning Spanish real estate — every owner, resident or non-resident, receives a bill each year from their local council, and non-payment can lead to fines, interest, and ultimately a lien on the property. Newcomers buying property should budget for it annually and understand that its cadastral-value basis (not the purchase price) determines the bill, while also being aware that owning valuable property may bring them into wealth-tax territory depending on where in Spain they live.
Key Facts
IBI is a local (municipal) tax, not collected by the Agencia Tributaria — each ayuntamiento (or a delegated provincial tax agency) bills and collects it directly.
The tax base is the valor catastral (cadastral value), an administrative value set by the Dirección General del Catastro, which is typically lower than market value; it can be looked up via the Sede Electrónica del Catastro using the property's cadastral reference.
By law (Art. 72, Real Decreto Legislativo 2/2004), the default/minimum rate is 0.4% for urban property and 0.3% for rustic (rural) property, with a legal maximum of 1.10% for urban and 0.90% for rustic property; each municipality sets its own rate within these bounds, and rates commonly cited in practice fall roughly between 0.4% and 1.3% depending on the town (Source: BOE, Real Decreto Legislativo 2/2004, Art. 72).
Properties classified as "of special characteristics" (large infrastructure, etc.) carry a different default rate of 0.6%, with a municipal range of 0.4% to 1.3%.
Whoever owns the property on 1 January of the tax year is liable for the full year's IBI, even if the property is sold partway through the year (the tax is not automatically prorated by law, though buyer/seller sometimes agree privately to split it in the sale contract).
The Impuesto sobre el Patrimonio (wealth tax) is a separate, distinct tax on an individual's net worth (including real estate), administered by Agencia Tributaria/regional tax authorities; the general state-level exempt minimum is €700,000 per taxpayer, with an additional exemption of up to €300,000 for a taxpayer's primary residence — but each autonomous community can set its own minimum exemption and rebates (Source: Agencia Tributaria, Manual Práctico Patrimonio 2025).
Some autonomous communities apply a 100% bonus (bonificación) on the wealth tax, effectively eliminating it for residents there — Madrid, Andalucía, Cantabria, and La Rioja are commonly cited as applying this 100% rebate, though La Rioja has introduced a transitional adjustment linked to the separate national Impuesto de Solidaridad a las Grandes Fortunas (temporary solidarity tax on large fortunes) (Source: Agencia Tributaria, Manual Práctico Patrimonio 2025, "Principales Novedades").
Costs
Urban property IBI rate: 0.4% (legal minimum/default) to 1.10% (legal maximum) of cadastral value, municipality-dependent
Rustic property IBI rate: 0.3% (legal minimum/default) to 0.90% (legal maximum) of cadastral value
Special-characteristics property IBI rate: 0.6% default, 0.4%–1.3% municipal range
Wealth tax (Patrimonio) general exempt minimum: €700,000 per taxpayer (varies by autonomous community; e.g. Valencian Community has raised its own minimum to €1,000,000)
Wealth tax primary-residence exemption: up to €300,000 additional exemption on top of the general minimum
Required Documents
Cadastral reference (referencia catastral) for the property, to look up its valor catastral via the Sede Electrónica del Catastro
Annual IBI payment notice/bill (recibo) issued by the ayuntamiento or its collecting agency
Property deed (escritura) showing ownership as of 1 January
Common Mistakes
Assuming IBI is billed by the Agencia Tributaria — it is a municipal tax, so bills, payment methods, and rates are set locally, not nationally.
Not confirming who is liable for IBI in the year of purchase — legally it falls on whoever owns the property on 1 January, so buyers completing later in the year should check the sale contract for any agreed proration.
Confusing IBI (annual, ongoing) with ITP/transfer tax (one-time, paid at purchase) or with Plusvalía Municipal (one-time, paid at sale) — these are three separate taxes.
Overlooking that owning property in a high-value or property-heavy portfolio may trigger wealth tax (Patrimonio) liability, which depends heavily on the autonomous community of tax residence and its specific exemptions/rebates.