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Tax

Wealth & Tax Disputes: Asset Protection and AEAT Defence

AEAT tax inspection defence, tax litigation, wealth tax, inheritance tax, R&D incentives and voluntary disclosure. Protect your wealth with specialist advisors.

98%
Favourable outcomes in tax litigation
€500M+
Assets under management
100%
AEAT notifications handled on time
25+
Years of tax experience

BMC’s tax disputes and wealth practice combines procedural defence before AEAT with proactive planning for businesses with high tax exposure and families with significant wealth. We cover everything from the first inspection summons to Supreme Court appeals, and from wealth tax diagnosis to intergenerational family business succession.

Defence in tax inspections and proceedings

Early intervention in a tax proceeding — from the first summons — is the most decisive variable for the outcome. A well-represented taxpayer from the outset can control deadlines, limit the scope of the inspection, provide documentation strategically, and formulate arguments that reduce or eliminate the proposed liability:

Voluntary tax disclosure — before AEAT acts

When a taxpayer identifies a tax irregularity, acting spontaneously before any administrative or criminal action is the decision that makes the difference between a disclosure with minimal surcharges and no penalties and a criminal tax fraud exposure:

Inheritance and Gift Tax planning

Inheritance and gift tax is one of the most distorting taxes in the Spanish system due to its regional fragmentation. The difference between a well-planned transfer and a reactive one can represent several hundred thousand euros in a mid-sized estate:

R&D and Innovation Tax Incentives and Patent Box

The R&D deductions under Art. 35 LIS are the most generous tax incentives in the EU for investment in innovation, but few companies apply them correctly due to inadequate technical documentation or lack of awareness of the Binding Motivated Report:

Wealth Tax and Temporary Solidarity Levy on Large Fortunes

The Wealth Tax and the Temporary Solidarity Levy on Large Fortunes are recurring taxes that annually assess the net worth of individuals resident in Spain. For medium-to-high net worth individuals, the combined burden can be significant. Legal instruments exist — exemptions, holding structures, Beckham Law, exit tax — that reduce exposure on a sustainable basis:

High-complexity taxation demands specialisation

Tax proceedings and high-complexity wealth planning share a common denominator: the taxpayer who acts late or without specialised advice starts at a disadvantage against an administration with superior technical and legal resources. At BMC we combine rigorous tax expertise with litigation experience and a wealth management perspective to design solutions that are effective today and sustainable under future reviews.

Have a deal in progress or under analysis?

Complimentary first consultation with our advisory team.

Methodology

Our approach

Case analysis

Thorough review of the notification or asset situation.

Defence strategy

Optimal legal-tax strategy: objections, appeals or voluntary regularisation.

Proceedings

Engagement with AEAT, TEAR and courts with controlled deadlines.

Resolution

Case closure with the best achievable outcome for the client.

Why choose us?

What sets us apart

Specialist tax defence

Dedicated team for tax inspections and litigation with deep knowledge of AEAT procedures.

High-net-worth wealth

Comprehensive wealth tax, inheritance and gift tax management for families with complex assets.

Voluntary disclosure

Cost-benefit analysis and processing of voluntary disclosures before inspection.

Experienced team with local insight and international reach

Our team

The professionals leading this practice

FAQ

Frequently asked questions

An audit can conclude with a conformity assessment (the taxpayer accepts the proposed adjustment, with a 30% penalty reduction) or a non-conformity assessment (the proposal is contested). If no agreement is reached, an appeal for reconsideration before AEAT is available, followed by an administrative claim before the TEAR/TEAC, and judicial review before the Audiencia Nacional or the Superior Court of Justice. Having specialised representation from the outset of the proceedings — even before the first diligence — is decisive for the outcome.
Voluntary disclosure before the tax authority or Public Prosecutor acts exempts the taxpayer from criminal liability for tax fraud (Art. 305 CP), eliminates formal tax penalties, and allows application of late-filing surcharges (10% to 20% depending on time elapsed) rather than ordinary penalties (50%–150%). The requirement is that the disclosure is complete, spontaneous, and prior to any administrative or criminal action. Once an inspection is initiated or a complaint filed, the exemption is no longer available.
Art. 20.2.c of the Inheritance and Gift Tax Act establishes a 95% reduction in the taxable base for transfers of family business shareholdings that meet: (1) the business carries out an economic activity (not mere asset holding); (2) the deceased or a family group member receives remuneration representing more than 50% of employment and business income; (3) the family group collectively holds at least 20% (or 5% individually) of the share capital. Autonomous communities may improve this reduction (some reach 99% or set quota reductions). Forward planning — at least five years before succession — is essential to ensure all requirements are met.
Art. 35 of the Corporate Income Tax Act establishes: (1) 25% deduction on R&D expenditure (on the two-year average) and 42% on the excess; (2) additional 17% deduction on research staff costs and 8% on R&D asset depreciation; (3) 12% deduction for technological innovation. With the Binding Motivated Report from the Ministry of Science, the deduction is unassailable before AEAT. Companies with insufficient tax liability can monetise 80% of the pending deduction.
Yes. Non-residents are subject to Wealth Tax on a limited liability basis — that is, on assets and rights located in Spain. The taxable base is calculated on the net value of assets in Spanish territory (real estate, balances in Spanish financial institutions, shareholdings in entities with greater asset value in Spain than abroad). The €700,000 minimum exemption also applies to non-residents from EU/EEA countries since the 2016 CJEU ruling. The applicable regional legislation depends on the location of the highest-value assets, not the taxpayer's domicile.

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Facing a tax inspection or managing significant assets?

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