Key data
| Regulation | Royal Decree-Law 25/2026, of September 29 — validated by Congress Resolution of October 16, 2026 |
|---|---|
| Publication | October 20, 2026 |
| Entry into force | September 30, 2026 |
| Affected parties | Transport companies (air, maritime and road), fishing, agriculture, energy and consumers of fuels and electricity |
| Category | Tax News |
| Fiscal year | 2026 |
| Official source | BOE-A-2026-21788 |
If your company operates in transport, fishing, agriculture or consumes fuels and electricity intensively, the Royal Decree-Law 25/2026 affects you directly from September 30, 2026. The Government approved this decree on September 29 as part of the Comprehensive Response Plan to the Middle East Crisis, and Congress validated it on October 16, giving it full legal force. Without that validation, the measures would have automatically lapsed.
The decree is not a one-off regulation: it covers a broad spectrum of sectors and tax figures. Anyone who does not review it in time will lose benefits that are already active.
What does this regulation establish?
RDL 25/2026 adopts and extends a set of emergency measures grouped into several blocks. Below are all the areas covered:
| Area | Measure |
|---|---|
| Special Tax on Hydrocarbons | Bonuses or adjustments to the applicable rate on fuels |
| VAT | Adjustments to the VAT rate applicable in sectors affected by the crisis |
| Electricity Tax | Reduction or adjustment of the tax rate for affected consumers |
| Fishing fleet | Specific support measures for the fishing sector |
| Agriculture | Support measures for the agricultural sector |
| Air transport | Support measures for the civil aviation sector |
| Maritime transport | Support measures for shipping and merchant fleet |
| Road transport | Support measures for land transport of goods and passengers |
| Gas sector | Measures within the framework of gas energy policy |
| General energy policy | Strategic actions in the energy sector |
| Strategic oil reserves | Actions on the Strategic Corporation for Petroleum Products Reserves |
| Canary Islands | Specific measures adapted to the Canary Islands' tax and territorial regime |
Parliamentary validation is the step that converts an emergency decree into a regulation with full legal coverage. Without it, any tax benefit applied during the provisional validity period could have been questioned. With the Congress Resolution of October 16, 2026, that uncertainty disappears.
Economic and operational impact
The most immediate impact is the reduction in tax costs on fuels and electricity for the included sectors. In a context of high energy prices due to the Middle East crisis, each point of bonus on the Special Tax on Hydrocarbons or on the Electricity Tax translates directly into operational savings.
The sectors with the greatest exposure to energy costs — road transport, fishing and agriculture — are those that can obtain the greatest relative benefit. Air and maritime transport companies, with fuel-intensive cost structures, are also in the focus of these measures.
From an operational perspective, there are two main risks:
- Not applying the benefits due to lack of knowledge or failure to update tax settlement procedures.
- Applying them incorrectly — for example, in periods or activities not covered — which can generate contingencies in a subsequent inspection.
Companies with activity in the Canary Islands should pay additional attention, as the decree contemplates specific measures for that territory, which has a differentiated tax regime.
Who does it affect?
- Road transport companies: truck fleets, logistics and distribution companies, independent transporters.
- Air transport companies: airlines and civil aviation operators.
- Maritime transport companies: shipping companies, shipowners and merchant fleet operators.
- Fishing sector: shipowners, fishing associations and national fishing fleet companies.
- Agricultural sector: farms, cooperatives and agribusiness companies with intensive fuel or electricity consumption.
- Energy sector companies: gas operators and companies with activity in energy policy.
- Large electricity consumers: industries with high electricity bills that can benefit from the Electricity Tax adjustment.
- Companies with activity in the Canary Islands: any company from the previous sectors with operations in the archipelago.
Practical example
A road transport company with a fleet of 30 trucks consumes large volumes of professional diesel monthly. With the bonuses active on the Special Tax on Hydrocarbons from September 30, 2026, each refueling carried out from that date can benefit from the reduced or bonused rate provided for in RDL 25/2026.
If the company has not updated its fuel purchasing procedures or has not communicated to its supplier or accounting firm the application of this benefit, it will be settling the tax at the ordinary rate and will lose the savings corresponding to all refuelings carried out since entry into force. Recovering that amount later requires a rectification procedure with the Tax Agency, with the administrative cost that entails.
The same reasoning applies to a fishing company that consumes diesel for its fleet, or to an agricultural operation with machinery intensive in fuel: the savings window is open from September 30, 2026 and is not recovered if not activated in time.
What should companies do now?
- Identify if your sector is included: review the decree's areas table and confirm if your main or secondary activity is covered (transport, fishing, agriculture, energy, Canary Islands).
- Review tax settlements from September 30, 2026: check if you are already applying the bonused rates on the Special Tax on Hydrocarbons, VAT and Electricity Tax. If not, contact your tax advisor immediately.
- Update your fuel and energy purchasing procedures: communicate to suppliers and accounting firms the new applicable rates so that invoices correctly reflect tax benefits.
- Pay special attention if you operate in the Canary Islands: specific measures for the archipelago may require additional procedures or justifications given the singularity of its tax regime.
- Document the application of each benefit: in case of inspection, you must prove that the reduced rates were applied within the period and conditions provided for by RDL 25/2026.
- Monitor the decree's validity: emergency decrees-law have defined application periods. Control the end date of validity to avoid continuing to apply benefits once expired, which would generate tax contingencies.
Frequently asked questions
When do the measures of RDL 25/2026 come into force?
The measures came into force on September 30, 2026, the date of approval of Royal Decree-Law 25/2026. Parliamentary validation on October 16, 2026 confirms its full legal force retroactively from that date, so tax benefits apply to all operations carried out from September 30.
What taxes are affected by RDL 25/2026?
The decree contemplates bonuses or adjustments in three tax figures: the Special Tax on Hydrocarbons, VAT and the Electricity Tax. The specific applicable rates must be verified in the full text of the decree published in the BOE (BOE-A-2026-21788).
Do Canary Islands companies have different measures?
Yes. RDL 25/2026 contemplates specific measures for the Canary Islands, adapted to the differentiated tax and territorial regime of the archipelago. Canary Islands companies in the affected sectors must review those specific provisions, as they may differ from those applicable in the rest of the national territory.
What happens if my company does not apply the tax benefits of the decree?
If you do not apply the benefits during the decree's validity period, you will lose the corresponding tax savings. Recovering it later requires submitting a self-assessment rectification to the Tax Agency, with the administrative and time cost that entails. There is no penalty for not applying them, but there is a real opportunity cost.
What is the Strategic Corporation for Petroleum Products Reserves and why does it appear in the decree?
The Strategic Corporation for Petroleum Products Reserves is the body responsible for managing Spain's minimum security reserves of fuels. RDL 25/2026 includes actions on this entity as part of the strategic response to the Middle East crisis, which affects the supply and price of petroleum products.
Official source
Consult complete regulation at official source
Notice: This article is for informational purposes only and does not constitute legal advice. For specific decisions, consult a qualified professional. Source: https://www.boe.es/diario_boe/txt.php?id=BOE-A-2026-21788
