For inheritance tax purposes there is another concept: Group
There are four groups into which the relatives can be classified according to the closeness of the relationship.
(That is determined by LINE AND GRADE)
GROUP I
Group II
Group III
Group IV
A descendant or an ascendant- in- law ( son-in-law or daughter-in-law, parents-in-law) as well as a stepchild is included in the inheritance tax law as kin in Group III.
The collateral relations by » Afinidad» in-laws ( siblings, aunt, uncles, niece nephew in-laws) are not included in the law but recent court judgements state that if the law does not distinguish, we must not distinguish either, so brothers, uncles, aunts, nephews and nieces by marriage ( in-laws) are also included in Group III, as are the corresponding blood relations. Even in the case that the spouse of the actual deceased, ( to whom the relationship is established), has already died.
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