Plusvalía Municipal in Bilbao: Basque foral rules, calculation method and specific exemptions

The plusvalía municipal in Bilbao, and in the Basque Country more broadly, has a fundamental characteristic that sets it apart from the rest of Spain: it is governed by the foral legislation of each historical territory and not by the national common legislation. In Bilbao, the applicable rules are those of the Juntas Generales de Bizkaia, which have introduced their own changes to the IIVTNU calculation and exemptions, with material differences from the general regime. Many Bilbao property owners and generalist advisers mistakenly apply national common-regime criteria when, in Bizkaia, the applicable law is the foral Norma Foral, which can lead to calculation errors and the loss of available exemptions or bonifications.

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Why BMC

Specialised advice and personal service

At BMC we know the foral rules of Bizkaia on the IIVTNU and calculate the plusvalía municipal in Bilbao using the coefficients and rules of the foral regime. We manage the self-assessment with the Ayuntamiento de Bilbao (Departamento de Hacienda y Finanzas), advise on foral exemptions, including those for inheritances to close family members, and represent clients before the Hacienda Foral de Bizkaia where necessary.

  • The plusvalía municipal in Bilbao is governed by the foral rules of Bizkaia (Juntas Generales), not by the national regime. The coefficients differ.

  • The STC 182/2021 and the RDL 26/2021 reformed the national common regime but do not apply directly in Bizkaia. The foral regime has adopted its own modifications.

  • Self-assessment must be filed with the Departamento de Hacienda y Finanzas of the Ayuntamiento de Bilbao. Deadline

    30 working days (sales and purchases) and 6 months (inheritances).

  • The foral administrative review route falls to the TEAF-B (Tribunal Económico-Administrativo Foral de Bizkaia), not the national TEAR.

How we work

From first contact to case completion

  1. Verification of the applicable foral regime

    We confirm that the property is located within the municipality of Bilbao (Bizkaia) and determine the applicable foral rules (Norma Foral del IIVTNU de Bizkaia) as distinct from the national common legislation. We identify the differences that are relevant to the specific case.

  2. Calculation under the Bizkaia foral rules

    We calculate the IIVTNU taxable base and liability using the coefficients and rates approved by the Juntas Generales de Bizkaia and the Ayuntamiento de Bilbao. We identify applicable foral exemptions and bonifications.

  3. Self-assessment filed with the Ayuntamiento de Bilbao

    We file the self-assessment with the Departamento de Hacienda y Finanzas of the Ayuntamiento de Bilbao or via the municipal electronic office within the statutory foral deadlines.

  4. Representation before the Hacienda Foral de Bizkaia

    If the Ayuntamiento de Bilbao initiates a verification procedure or the client wishes to challenge the assessment, we act as representative before the Ayuntamiento and, if necessary, before the Diputación Foral de Bizkaia.

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The problem

The plusvalía municipal in Bilbao, and in the Basque Country more broadly, has a fundamental characteristic that sets it apart from the rest of Spain: it is governed by the foral legislation of each historical territory and not by the national common legislation. In Bilbao, the applicable rules are those of the Juntas Generales de Bizkaia, which have introduced their own changes to the IIVTNU calculation and exemptions, with material differences from the general regime. Many Bilbao property owners and generalist advisers mistakenly apply national common-regime criteria when, in Bizkaia, the applicable law is the foral Norma Foral, which can lead to calculation errors and the loss of available exemptions or bonifications.

Our solution

At BMC we know the foral rules of Bizkaia on the IIVTNU and calculate the plusvalía municipal in Bilbao using the coefficients and rules of the foral regime. We manage the self-assessment with the Ayuntamiento de Bilbao (Departamento de Hacienda y Finanzas), advise on foral exemptions, including those for inheritances to close family members, and represent clients before the Hacienda Foral de Bizkaia where necessary.

Process

How we do it

1

Verification of the applicable foral regime

We confirm that the property is located within the municipality of Bilbao (Bizkaia) and determine the applicable foral rules (Norma Foral del IIVTNU de Bizkaia) as distinct from the national common legislation. We identify the differences that are relevant to the specific case.

2

Calculation under the Bizkaia foral rules

We calculate the IIVTNU taxable base and liability using the coefficients and rates approved by the Juntas Generales de Bizkaia and the Ayuntamiento de Bilbao. We identify applicable foral exemptions and bonifications.

3

Self-assessment filed with the Ayuntamiento de Bilbao

We file the self-assessment with the Departamento de Hacienda y Finanzas of the Ayuntamiento de Bilbao or via the municipal electronic office within the statutory foral deadlines.

4

Representation before the Hacienda Foral de Bizkaia

If the Ayuntamiento de Bilbao initiates a verification procedure or the client wishes to challenge the assessment, we act as representative before the Ayuntamiento and, if necessary, before the Diputación Foral de Bizkaia.

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Monthly searches 'plusvalía municipal Bilbao'
Foral
Applicable rules: Norma Foral de Bizkaia (not the national regime)
30 días
Self-assessment deadline for sales and purchases

I sold a flat in Bilbao La Vieja and my long-standing adviser calculated the plusvalía using Madrid tables. BMC identified the error: in Bizkaia the rules are foral and the coefficients are different. The correct calculation was 30% lower. The difference between knowing and not knowing the foral rules was enormous.

Ane Elizondo Private individual, Bilbao

The plusvalía municipal in Bilbao, formally the Impuesto sobre el Incremento de Valor de los Terrenos de Naturaleza Urbana (IIVTNU), is one of the most distinctive local taxes in the Spanish context: in Bizkaia it is governed by the foral legislation of the Juntas Generales de Bizkaia, with coefficients, tax rates and exemptions that differ from those of the national common regime. Applying the national rules in error to a Bilbao transaction can lead to incorrect calculations and the loss of relevant foral exemptions. At BMC we know the foral IIVTNU rules for Bizkaia, calculate the correct liability and manage the self-assessment with the Ayuntamiento de Bilbao. For background on the tax in general and on fiscal planning for property transactions.

The distinctive nature of the IIVTNU in Bilbao: the Bizkaia foral regime

The Basque Country has its own tax system (the Concierto Económico) that grants the Juntas Generales of each historical territory (Álava, Bizkaia and Gipuzkoa) the competence to regulate their own taxes, including the IIVTNU. This means:

  • In Bilbao and Bizkaia: the foral Norma Foral del IIVTNU of the Juntas Generales de Bizkaia applies, with the rates and coefficients approved by the Ayuntamiento de Bilbao within the foral limits.
  • In Vitoria-Gasteiz and Álava: the Norma Foral de Álava applies.
  • In San Sebastián and Gipuzkoa: the Norma Foral de Gipuzkoa applies.

The IIVTNU reform in the common regime introduced by Royal Decree-Law 26/2021 (which established the objective and real-gain methods for the taxpayer to choose following STC 182/2021) does not apply directly in the Basque Country. The foral institutions have adopted their own reforms, generally with the same philosophy (the ability to choose the most favourable method for the taxpayer) but with their own technical specificities and timetables for entry into force.

Calculating the IIVTNU in Bilbao under the foral rules

Taxable base under the Bizkaia foral regime

The IIVTNU taxable base in Bilbao is calculated by applying the coefficients approved by the Juntas Generales de Bizkaia to the cadastral value of the land of the property. The Ayuntamiento de Bilbao approves its own tax rates annually within the foral maxima.

The foral coefficients of Bizkaia for the IIVTNU are based on the ownership period and may differ from those of the common regime. For the most recent tax years, the Juntas Generales de Bizkaia have introduced the possibility for the taxpayer to opt for whichever method is more favourable (as in the common regime), but with the specific technical formulation of the foral normative framework.

Tax rate in Bilbao

The IIVTNU tax rate in Bilbao is the one approved by the Ayuntamiento de Bilbao in its fiscal ordinance, within the maxima authorised by the foral rules of Bizkaia. This rate may differ from the rate applied in other cities under the common regime (which ranges up to 30%).

For the exact coefficients and rates in force in the current tax year, consult the Ayuntamiento de Bilbao fiscal ordinance or contact BMC.

Filing the self-assessment with the Ayuntamiento de Bilbao

The IIVTNU self-assessment in Bilbao is filed with the Departamento de Hacienda y Finanzas of the Ayuntamiento de Bilbao, in person at its offices or through the Ayuntamiento de Bilbao electronic office (bilbao.eus).

The filing deadlines set out in the foral rules are:

  • Onerous inter vivos transfers (sales and purchases): 30 working days from the date of the deed.
  • Inheritances (mortis causa transfers): 6 months from the date of death, extendable by a further 6 months on prior application.
  • Gifts: 30 working days from the deed.

Exemptions under the IIVTNU foral rules of Bizkaia

The foral IIVTNU rules of Bizkaia provide for specific exemptions that may differ from those in the common regime:

  • Deed in lieu of foreclosure on habitual residence: as in the common regime, the transfer of the habitual residence by an insolvent mortgage debtor to cancel the debt is exempt.
  • Transfers to spouses or registered civil partners: the Basque foral rules give broad recognition to registered civil partnerships.
  • Inheritances under Basque succession arrangements: Basque civil law recognises its own succession arrangements (gifts of future assets, heir designations in matrimonial agreements) which receive specific treatment under the foral IIVTNU rules.
  • Exemption for transfers without an increase in value: the Bizkaia foral rules also incorporate the exemption where there is no real increase in the value of the land, in line with the constitutional case law.

The foral administrative review route: the TEAF de Bizkaia

In Bilbao, claims against Ayuntamiento de Bilbao IIVTNU assessments are not lodged before the national TEAR (Tribunal Económico-Administrativo Regional) but before the Tribunal Económico-Administrativo Foral de Bizkaia (TEAF-B). This distinction is fundamental: a challenge lodged with the wrong body can result in the deadline being lost.

The foral review procedure is:

  1. Objection for reconsideration (recurso de reposición) before the Ayuntamiento de Bilbao (deadline: 1 month from notification of the assessment).
  2. Claim before the TEAF-B (if the objection is dismissed).
  3. Administrative litigation (recurso contencioso-administrativo) before the Superior Court of Justice of the Basque Country (TSJPV), once administrative remedies are exhausted.

Interaction with the foral inheritance tax of Bizkaia

In Bizkaia, the Impuesto de Sucesiones y Donaciones (inheritance and gift tax) is governed by Norma Foral 4/2015 de Bizkaia, which generally provides more favourable terms for direct heirs than the national common regime. The Basque foral succession rules have their own parentage groups and specific reductions for transfers of family businesses and habitual residences.

In an inheritance involving a property in Bilbao, the heir must settle both the foral ISD before the Hacienda Foral de Bizkaia and the IIVTNU before the Ayuntamiento de Bilbao. BMC coordinates both obligations to minimise the total tax cost of the inheritance.

Read our in-depth article on the Constitutional Court ruling and the current plusvalía municipal regime and our calculation guide for the complete picture of the tax.

BMC is represented in Bilbao. Find out about our Bilbao office for local support.

What comes next

Real estate purchase contractFormalise the transaction with a contract that protects buyer and seller, sets out cost allocation, and avoids post-sale surprises.
Municipal capital gains tax appealIf the municipal plusvalía tax assessed is disproportionate or the transaction resulted in a loss, we can claim a refund.
FAQ

Frequently asked questions

In Bilbao and throughout the historical territory of Bizkaia, the plusvalía municipal (IIVTNU) is governed by the foral rules of Bizkaia, approved by the Juntas Generales de Bizkaia. This is different from the national common regime under the TRLHL that applies in the rest of Spain. The foral regime has its own coefficients, tax rates, exemptions and bonifications, which can differ significantly from those of the common regime. The STC 182/2021 and the Royal Decree-Law 26/2021 that reformed the IIVTNU in the common-regime territory do not apply directly in Bizkaia: the Juntas Generales de Bizkaia have adopted their own normative reforms adapted to the foral framework.
The foral IIVTNU rules of Bizkaia set out their own coefficients for updating the cadastral value of the land and their own maximum tax rates, which the Ayuntamiento de Bilbao specifies in its municipal fiscal ordinance within the foral limits. As in the common regime, the calculation starts from the cadastral value of the land (shown on the IBI bill) and the ownership period. At BMC we have the updated foral coefficients for Bizkaia and calculate the exact liability under the rules in force in each tax year.
The foral rules of Bizkaia provide for exemptions and reductions on the IIVTNU for certain family transfers, which may differ from those in the common regime. In particular, the Bizkaia foral regime has historically regulated inheritances and the testamentary arrangements characteristic of Basque civil law (such as the comunicación foral de bienes and the universal usufruct of the surviving spouse) in greater detail. For the specific exemptions applicable to your case in Bilbao, consult BMC, which verifies the current foral rules in each tax year.
The rules applicable to each plusvalía municipal depend on the municipality where the property is located, not on the owner's place of residence. For the property in Bilbao (Bizkaia), the foral rules of Bizkaia apply; for the property in Madrid, the national common regime applies with the coefficients of the Ayuntamiento de Madrid. These are entirely independent self-assessments filed with different bodies (Ayuntamiento de Bilbao and Ayuntamiento de Madrid). BMC can manage both in a coordinated manner, ensuring each is calculated correctly under its specific rules.
Yes, although the deadlines and claim mechanisms are governed by the foral rules of Bizkaia and the foral administrative procedure, not by the national TEAR. If the sale price of the property in Bilbao was equal to or lower than the purchase price (a real loss), the plusvalía municipal is not chargeable. If it was paid, a refund may be claimed from the Ayuntamiento de Bilbao (Departamento de Hacienda) within the foral limitation period (4 years under the Bizkaia foral regime). The foral administrative appeal falls to the Tribunal Económico-Administrativo Foral de Bizkaia (TEAF-B), not the national TEAR.
In Bilbao and Bizkaia, the Impuesto de Sucesiones y Donaciones (inheritance and gift tax) is governed by Norma Foral 4/2015 de Bizkaia, which sets out different rates and reductions from those in the national territory. The Basque foral succession rules are generally more favourable for direct heirs than the national regime. In an inheritance in Bilbao, the heir must settle both the foral ISD before the Hacienda Foral de Bizkaia and the IIVTNU before the Ayuntamiento de Bilbao. Both are independent obligations. BMC advises on the full picture of inheritances involving Bizkaia property, applying the foral rules throughout.

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Frequently asked questions

Questions about Plusvalía Municipal Bilbao: Calculation Under Basque Foral Rules, Exemptions and Advice

In Bilbao and throughout the historical territory of Bizkaia, the plusvalía municipal (IIVTNU) is governed by the foral rules of Bizkaia, approved by the Juntas Generales de Bizkaia. This is different from the national common regime under the TRLHL that applies in the rest of Spain. The foral regime has its own coefficients, tax rates, exemptions and bonifications, which can differ significantly from those of the common regime. The STC 182/2021 and the Royal Decree-Law 26/2021 that reformed the IIVTNU in the common-regime territory do not apply directly in Bizkaia: the Juntas Generales de Bizkaia have adopted their own normative reforms adapted to the foral framework.
The foral IIVTNU rules of Bizkaia set out their own coefficients for updating the cadastral value of the land and their own maximum tax rates, which the Ayuntamiento de Bilbao specifies in its municipal fiscal ordinance within the foral limits. As in the common regime, the calculation starts from the cadastral value of the land (shown on the IBI bill) and the ownership period. At BMC we have the updated foral coefficients for Bizkaia and calculate the exact liability under the rules in force in each tax year.
The foral rules of Bizkaia provide for exemptions and reductions on the IIVTNU for certain family transfers, which may differ from those in the common regime. In particular, the Bizkaia foral regime has historically regulated inheritances and the testamentary arrangements characteristic of Basque civil law (such as the comunicación foral de bienes and the universal usufruct of the surviving spouse) in greater detail. For the specific exemptions applicable to your case in Bilbao, consult BMC, which verifies the current foral rules in each tax year.
The rules applicable to each plusvalía municipal depend on the municipality where the property is located, not on the owner's place of residence. For the property in Bilbao (Bizkaia), the foral rules of Bizkaia apply; for the property in Madrid, the national common regime applies with the coefficients of the Ayuntamiento de Madrid. These are entirely independent self-assessments filed with different bodies (Ayuntamiento de Bilbao and Ayuntamiento de Madrid). BMC can manage both in a coordinated manner, ensuring each is calculated correctly under its specific rules.
Yes, although the deadlines and claim mechanisms are governed by the foral rules of Bizkaia and the foral administrative procedure, not by the national TEAR. If the sale price of the property in Bilbao was equal to or lower than the purchase price (a real loss), the plusvalía municipal is not chargeable. If it was paid, a refund may be claimed from the Ayuntamiento de Bilbao (Departamento de Hacienda) within the foral limitation period (4 years under the Bizkaia foral regime). The foral administrative appeal falls to the Tribunal Económico-Administrativo Foral de Bizkaia (TEAF-B), not the national TEAR.
In Bilbao and Bizkaia, the Impuesto de Sucesiones y Donaciones (inheritance and gift tax) is governed by Norma Foral 4/2015 de Bizkaia, which sets out different rates and reductions from those in the national territory. The Basque foral succession rules are generally more favourable for direct heirs than the national regime. In an inheritance in Bilbao, the heir must settle both the foral ISD before the Hacienda Foral de Bizkaia and the IIVTNU before the Ayuntamiento de Bilbao. Both are independent obligations. BMC advises on the full picture of inheritances involving Bizkaia property, applying the foral rules throughout.
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