The limitation in article 16 of the Spanish Corporate Income Tax Act shapes the tax position of any leveraged group, and identifying which items enter its calculation is not always straightforward. Binding ruling V0864-26, issued on 21 April 2026 by the Dirección General de Tributos (the Spanish tax authority's directorate that issues binding rulings), settles the treatment of an increasingly common arrangement in the energy sector: synthetic power purchase agreements.
The facts considered
An independent renewable energy producer, the parent of a group taxed under the consolidation regime, has entered through several group companies into long-term bilateral power purchase agreements, known by the acronym PPA.
Those signed in Spain are all synthetic. No energy is physically delivered to the counterparty: the companies owning the plants sell their output to the market and the contract operates as a financial hedge. The group undertakes to pay the hourly market price on a notional quantity of megawatt hours in exchange for a fixed price for that same quantity, over a period of ten to fifteen years.
They are accounted for in a manner similar to a derivative, recognised initially at fair value and remeasured at each year end using valuations by independent experts based on long-term electricity price curves. They are designated as hedges, meeting the requirements for hedge accounting.
The question is whether the income and expenses arising from those hedges fall within the article 16 limitation and must be included in its calculation.
The purpose of the limitation
The answer starts from the purpose of the rule rather than its wording. Article 16 seeks to limit the deductibility of ordinary expenses connected with corporate borrowing, so that, where such borrowing exists, the operating profit of a period is not reduced to zero for tax purposes.
Its proper scope is therefore income and expenses arising from corporate borrowing or from the transfer of own capital to third parties.
How the contract is characterised
Applied to this case, the contract described takes the form of an instrument hedging the risk of variation in the price of electricity associated with future energy purchases, aimed at stabilising the effective cost of that supply by offsetting the difference between an agreed fixed price and the reference market price. In principle, it does not serve a financing or borrowing purpose.
Accordingly, to the extent that the contracts are characterised and recorded for accounting purposes as derivative financial instruments hedging the risk associated with electricity price fluctuations, the resulting financial income and expenses should not be subject to the article 16 limitation, since they do not stem from corporate borrowing but from hedging a price risk tied to a supply necessary for the business.
The accounting requirement on which everything depends
It is worth noting that the conclusion is conditional. It rests on an accounting characterisation that is not a mere label.
Section 6 of recognition and measurement rule 9 of the Spanish General Accounting Plan requires, for any accounting hedge, formal designation and documentation of the hedging relationship at inception. It further requires the hedge to be highly effective, meaning that prospectively the changes in the fair value or cash flows of the hedged item can be expected to be almost fully offset by those of the hedging instrument, and that retrospectively the results have fallen within a range of eighty to one hundred and twenty-five per cent of the hedged item.
Practical implications
The ruling does not validate the taxpayer's particular contracts; it endorses a treatment conditional on a characterisation that the company must be able to evidence. The real work therefore lies not in the tax argument, which is sound and consistent with the purpose of the rule, but in the file that supports it.
Two elements prove decisive on any review. First, the formal documentation of the hedging relationship, prepared at inception rather than reconstructed afterwards. Second, the monitoring of effectiveness year by year, with the corresponding measurement. Without that support, the debate shifts: it would no longer concern the purpose of article 16 but whether a hedge existed at all.
Conclusion
The administrative position is favourable and well founded, but conditional. The lesson reaches beyond the energy sector: where a favourable answer rests on an accounting characterisation, the criterion is the easy part and the supporting documentation the demanding one.
Lex·on advises on corporate and group taxation and on complex financial arrangements from Palma de Mallorca and Manacor. If your group uses hedging instruments, we can review their treatment and the documentation behind it.
Source: Binding ruling V0864-26 of 21 April 2026, Spanish Directorate General for Taxation, Sub-Directorate for Corporate Income Tax.
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This article is for information purposes only and reflects the administrative position in force on the date of publication. It does not constitute legal or tax advice and does not replace an individual analysis of each case.