How the DGT's position has evolved
Current position
Under the transitional regime of the Personal Income Tax Law (LIRPF), investment in the primary residence is deductible, including the amortization of principal and interest. In the year of the sale, only the amounts paid while the property maintained its status as a primary residence are deductible. It is mandatory that the wealth at the close of the period exceeds the initial value by the amount of the investments made to ensure that the investment originates from income from the period itself.
The DGT's position remains constant regarding the application of the LIRPF transitional regime. Rulings repeatedly confirm the requirements of primary residence and the necessity for net wealth to increase by the amount of the investment made. No changes in criterion are observed, but rather a uniform application of the rule regarding the deductibility of the amounts paid.
Analysis based on 13 of 14 rulings with a stated position. Updated 26 September 2026.