The tax neutrality regime in Spain: key to business restructurings

What is the tax neutrality regime?

The tax neutrality regime is a mechanism provided for in Chapter VII of Title VII of the Corporate Income Tax Law (LIS) that allows companies to carry out restructuring operations —such as mergers, spin-offs, asset contributions or share exchanges— without generating immediate taxation on the latent income derived from such operations.

Its objective is clear: to prevent taxation from distorting business decisions. If an operation responds to valid economic reasons, the regulation allows taxation to be deferred until a later time, thus avoiding tax burdens that could hinder legitimate reorganizations.

What business operations can the tax neutrality regime apply to?

The tax neutrality regime applies, among others, to the following operations:

• Mergers (by absorption or by creation of new company)
• Spin-offs (total or partial)
• Non-monetary contributions of business branches
• Asset contributions
• Share exchanges
• Change of registered office of European Companies within the EU

All of them must meet the established requirements and be carried out for valid economic reasons.

Benefits of the regime

The advantages of applying for the regime are significant:

• ✅ No integration of income in the Corporate Income Tax taxable base.
• ✅ Deferral of taxation on capital gains until a subsequent transfer.
• ✅ Maintenance of tax value and acquisition date of assets or rights.
• ✅ Avoids double taxation in complex restructuring processes.
• ✅ Facilitates cross-border operations within the European Union.

Key requirements

To validly apply for the tax neutrality regime, the following requirements must be met, among others:

• Real economic motivation: the operation cannot have as its main purpose a tax advantage.
• Minimum participation: in asset contributions, at least 5% continued participation.
• Autonomous economic unit: in non-monetary contributions, there must be a business branch with its own entity.
• Elements related to economic activities and with accounting in accordance with the Commercial Code.

The Administration may deny the application of the tax neutrality regime if it detects fraud, simulation or abuse of rights.

Relevant real cases

The regime has been subject to judicial and administrative examination in numerous cases:

Santander Bank – Popular Bank Merger (2017): The Tax Agency did not question the application of the regime despite Popular's critical situation, as an evident economic reason was appreciated —the stability of the financial system—.

National Court, SAN 2721/2019 (July 17, 2019): the regime was denied in a partial spin-off due to lack of real economic motivation. It was proven that the operation pursued exclusively tax advantages.

Supreme Court, STS 3872/2020 (November 11, 2020): emphasizes that valid reasons must be sufficiently justified and not be generic or formal. The burden of proof falls on the taxpayer.

These precedents show that the Tax Agency and the courts especially value the economic substance of the operation. The existence of documentation supporting the business reasons is essential to avoid adjustments.

Communication procedure to the Tax Agency

The application of the regime is not automatic. It is essential to communicate it correctly to the AEAT within the legal deadlines:

• General deadline: three months from the registration of the operation in the Commercial Registry or, failing that, from the signing of the public deed.
• Responsible parties: depends on the tax residence of the parties; it may fall on the transferring entity or the partners.
• Content: identification of the parties, description of the operation, option for the regime and supporting documentation (deeds, brochures, etc.).
• Place of submission: Competent Delegation according to tax domicile; in relevant operations, the Central Delegation of Large Taxpayers (DCGC).

Failure to make this communication on time may result in a serious tax offense punishable by €10,000 per operation.

VERY IMPORTANT: Even in the case of an operation that is not going to apply for the tax neutrality regime, the communication must still be made indicating such circumstance or sanctions may be imposed equally.

Consequences of non-compliance

The improper use of the regime or its defective communication entails important risks:

• Loss of tax deferral: latent income becomes immediately taxable.
• Recategorization of the operation: application of the general regime of article 17 LIS.
• Tax regularization: IRPF, IS, IIVTNU, ITP-AJD, VAT, depending on the type of operation.
• Tax sanctions: severe economic fines.

Non-compliance may render ineffective the intended advantage of the tax neutrality regime and even lead to broader inspections.

Conclusion

The tax neutrality regime is a fundamental tool for executing business restructuring operations with legal security and tax efficiency. However, it is not a simple procedure or an "automatic exemption": it requires planning, economic motivation and rigorous compliance with formal and material requirements.

Do you need support to apply this tax neutrality regime?

At Legal Core Labs we have lawyers and tax experts specialized in business restructurings. We help you:

• Design the most efficient corporate and tax structure.
• Correctly justify the economic reasons for the operation.
• Prepare and submit the communication to the Tax Agency.
• Avoid contingencies and sanctions later.

With Legal Core Labs, your business restructurings have maximum legal and tax security.