How the DGT's position has evolved
Current position
The VAT (IVA) taxable base must be modified when a judicial or administrative ruling renders operations totally or partially ineffective or alters their price. The rectification of tax amounts must be carried out as long as four years have not elapsed since the accrual or since the circumstances of the alteration occurred. In the event of the ineffectiveness of the operation, a final ruling that legally renders it ineffective is necessary.
The DGT's position remains constant regarding the need for a final ruling to modify the taxable base. The doctrine has specified that the ineffectiveness of the operation must be total or partial and that the rectification has a time limit of four years from the accrual or the alteration. No changes in criterion are observed, but rather a systematic application of the rectification rules in the face of judgments.
Turning points
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Establishes that, in the event of a final judicial ruling that renders the operation ineffective, the taxable base may be modified within the four years following the finality of said ruling.
Analysis based on 9 of 10 rulings with a stated position. Updated 29 September 2026.