VAT pro-rata according to the TEAC and limits for its modification outside the deadline

VAT pro-rata as a tax election and its irrevocable nature

The Spanish Central Economic-Administrative Court (TEAC), in its resolution of 27 February 2026, has clarified two key aspects of the VAT deduction regime, with particular relevance for taxpayers carrying out transactions both with and without the right to deduction. First, it confirms that the choice between the general and special pro-rata methods constitutes a tax election. Second, it adopts a restrictive approach regarding its modification once the filing deadline has expired.

From a legal standpoint, the TEAC aligns with recent Supreme Court case law by considering that the choice of the pro-rata method implies opting between mutually exclusive regimes. This means that, once exercised through the VAT return, it cannot be amended outside the statutory period, in accordance with Article 119.3 of the General Tax Law (LGT).

The resolution also highlights that the regulatory reform introduced in 2013 eliminated the issue of making a “blind” choice, allowing taxpayers to decide at year-end with full knowledge of the transactions carried out, thereby removing the basis for more flexible interpretations previously accepted.

Furthermore, the TEAC recalls that the irrevocability of tax elections only allows for very limited exceptions: a substantial change in circumstances, absence of culpable conduct, and impact on principles such as economic capacity. In the case analysed, it rejects its application on the grounds that the relevant circumstances were already known to the taxpayer.

Particular importance is also given to the criteria regarding the calculation of the general pro-rata. The Court confirms that exempt real estate transactions arising from expropriations must be included in the denominator when they form part of the ordinary business activity. The determining factor is not whether the transaction is occasional, but its connection to the economic activity, in line with the doctrine of the Supreme Court and the CJEU (Court of Justice of the European Union) on non-ancillary transactions.

Finally, the existence of separate sectors is rejected, as expropriations are considered to be part of real estate development activity.