Law 2/2026 exceptional fiscal measure: what changes for companies and self-employed

Key data

Companies, self-employed workers and taxpayers in general have a new tax regulation to review. Law 2/2026, of February 27, introduces an exceptional measure in the Spanish tax system, published in the BOE with reference BOE-A-2026-7044. The regulation has been in force since February 27 itself, although its official publication came on March 27, 2026.

The qualification of exceptional is not a minor detail: it indicates that this law responds to a specific cyclical situation, economic or emergency, which has direct implications for its scope and duration. This is not a structural reform of the tax system, but a specific intervention that may have limited validity in time or apply only to certain subjects or sectors.

What does this regulation establish?

Law 2/2026 introduces an exceptional fiscal measure in the Spanish tax system. According to available information, this regulation may affect one or more of the following elements of the tax system:

• Tax rates: modification of the rates applicable to one or more taxes.
• Taxable bases: changes in how the base on which the tax is applied is calculated.
• Declaration deadlines: alteration of usual tax calendars.
• New tax obligations: introduction of additional charges or requirements for certain taxpayers.

The exceptional nature of the measure implies two possibilities that must be verified in the full text:

• Limited temporal validity: the regulation could have an expiration date or be conditioned on the persistence of the situation that motivates it.
• Restricted application: it may not affect all taxpayers equally, but only certain specific taxpayers or economic sectors.

To know the exact tax affected and the specific scope of the measure, it is essential to consult the full text published in the BOE.

Economic and operational impact

The specific impact in terms of costs or savings depends on the tax affected and the taxpayer's profile, data that require verification in the full text of the regulation. However, there are operational consequences that any company or self-employed worker should anticipate:

• Review of current tax planning: if the regulation modifies rates or taxable bases, the tax burden calculations for 2026 may have become outdated.
• Possible changes in declaration deadlines: if the law alters the tax calendar, there may be new deadlines that were not planned in the tax agenda for the fiscal year.
• Risk of retroactive non-compliance: given that the regulation entered into force on February 27, 2026 but was published on March 27, there is a period in which the regulation was already applicable before its official publication. This gap should be analyzed with the tax advisor.
• Impact on treasury: if new payment obligations are introduced or deadlines are advanced, liquidity planning may be affected.

Who does it affect?

The subjective scope declared by the regulation is broad, although its exceptional nature may restrict practical application:

• Companies: commercial corporations and other legal entities subject to the Spanish tax system.
• Self-employed workers: self-employed workers who pay taxes under the IRPF or special regimes.
• Taxpayers in general: any citizen or entity subject to the Spanish tax system.
• Tax advisors and management firms: must analyze the impact on their clients' tax planning and update advisory models.
• CFOs and financial directors: responsible for reviewing whether the fiscal budgets for fiscal year 2026 should be recalculated.

The application may be restricted to certain taxpayers or sectors, so the first step is to verify whether your activity or tax profile falls within the scope of the regulation.

Practical example

A medium-sized company with activity in Spain has closed its fiscal budget for 2026 based on the regulations in force at the end of 2025. On February 27, 2026, Law 2/2026 enters into force, introducing an exceptional measure that could modify, for example, the rate applicable to a tax that the company settles quarterly.

If the CFO does not detect this change before the next settlement period, the company could submit a declaration with the incorrect rate or base, generating a discrepancy with the tax authority. Given that the regulation is already in force since February, the risk of surcharge or penalty for incorrect declaration is real from that date.

The immediate step in this case would be: the tax advisor reviews the full text of Law 2/2026 (BOE-A-2026-7044), determines whether the tax that the company settles is affected, and recalculates the declaration for the corresponding period before its submission.

What should companies do now?

1. Access the full text in the BOE: consult Law 2/2026 in the BOE (BOE-A-2026-7044) to identify the specific tax affected and the exact scope of the measure.
2. Verify whether the company or self-employed worker is within the scope of application: check whether the regulation affects your sector, activity or tax profile, given that its exceptional nature may imply restricted application.
3. Review the 2026 tax planning: if the regulation modifies rates, bases or deadlines, update the tax burden calculations and the calendar of tax obligations for the fiscal year.
4. Analyze the period between February 27 and March 27: given the gap between entry into force and publication in the BOE, review whether there are declarations submitted in that period that should be corrected.
5. Coordinate with the tax advisor: commission a specific analysis of the impact of Law 2/2026 on tax planning, especially if the validity is temporary and may require subsequent adjustments when the measure expires.
6. Monitor the validity of the regulation: given its exceptional and possibly temporary nature, be alert to possible modifications or repeal of the measure during fiscal year 2026.