How the DGT's position has evolved
Current position
To access the transitional regime, the amounts must have been paid before January 1, 2013. If deductions for previous homes have been enjoyed, the new deduction only begins when the amounts invested in the new home exceed the sum of those invested in the previous homes subject to deduction. Only the amounts effectively paid by the holder may be deducted, excluding expenses shared with their partner.
The DGT's position remains constant regarding the application of the transitional regime and the requirement to exceed the previous investment. Aspects concerning the deduction base have been specified, clarifying that it does not include the purchase of materials from suppliers and that amounts can only be deducted in the tax year in which they are paid. Recently, it has been delimited that the right is strictly limited to what is paid by the holder.
Turning points
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Clarifies that the deduction base does not include the purchase of materials from different suppliers, as only payments made to those executing the work are deductible.
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Establishes that the amounts paid can only form part of the deduction base for the tax year in which they are paid, prohibiting their transfer to subsequent tax years.
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Specifies that the holder may only deduct the portion of the amounts that they have effectively paid, excluding amounts paid by their partner.
Analysis based on 20 of 20 rulings with a stated position. Updated 25 September 2026.