How the DGT's position has evolved
Current position
The personal and family allowance is determined according to the family circumstances provided for in the LIRPF (Personal Income Tax Law) and the RIRPF (Personal Income Tax Regulations). For the calculation of withholdings using Form 145, only descendants who entitle the taxpayer to the allowance for this concept are included, requiring a kinship bond by consanguinity, adoption, or assimilation. Stepchildren do not count for this calculation.
The DGT's position remains stable regarding the application of the personal and family allowance. Rulings have addressed different nuances, such as the application of the allowance to the savings base (V4478-16) or the inclusion of disability expenses for ascendants (V1147-20), but without altering the basic structure of the concept.
Turning points
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Specifies that, in the absence of a general taxable base, the personal and family allowance forms part of the savings taxable base.
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Clarifies that for Form 145, only children with a kinship bond by consanguinity, adoption, or assimilation count, excluding stepchildren.
Analysis based on 37 of 38 rulings with a stated position. Updated 23 September 2026.