How the DGT's position has evolved
Current position
The deduction for investment in the primary residence is limited to the transitional regime for acquisitions made before January 1, 2013. Mortgage cancellation expenses and those derived from financing are considered amounts paid for the acquisition and allow for the application of the deduction in the period in which they are paid.
The DGT's position remains constant in the application of the transitional regime, restricting the right to those who acquired the housing before 2013. No changes are observed in the interpretation of the deadline, but the inclusion of mortgage cancellation expenses in the deduction base is confirmed.
Turning points
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It is established that mortgage cancellation expenses and those derived from financing are included in the base for the deduction for investment in the primary residence.
Analysis based on 57 of 62 rulings with a stated position. Updated 23 September 2026.