How the DGT's position has evolved
Current position
The entrepreneur who unduly receives compensations must refund them directly to the Tax Administration using form 309. Customers are not obliged to rectify their receipts or deductions. If customers have already refunded the compensation through receipts and the entrepreneur holds a copy, they may pass on the VAT through corrective invoices, provided that four years have not elapsed since the accrual.
The DGT's position remains constant regarding deduction requirements, demanding effective payment and possession of the supporting receipt. The evolution focuses on error management, clarifying that the refund of undue compensations is the direct responsibility of the entrepreneur who received them. No change in criterion is observed, but rather a clarification regarding the refund mechanics and the relationship with customers.
Turning points
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Establishes that the entrepreneur must directly refund undue compensations to the Tax Administration without their customers having to rectify their receipts or deductions.
Analysis based on 18 of 18 rulings with a stated position. Updated 25 September 2026.