When nephews and nieces inherit: the tax impact linked to demographic change

Inheritance and gift tax has occupied a prominent place in public debate in Spain for years, both because of its impact on family taxation and its structure within the tax system. Under the current framework, the autonomous communities have powers to regulate certain aspects, such as reductions in the taxable base, rebates on the tax payable and the tax scale.

This regulatory framework has resulted in the tax being applied with certain territorial particularities, which influence the final outcome in each case. In this context, analyses tend to focus on the most common transfers, particularly those taking place between direct relatives, such as parents and children or between spouses, as these are the most frequent in practice.

However, there are other less visible but increasingly common situations in which the tax impact may be substantially higher. We are referring to scenarios in which the beneficiaries are collateral relatives and, in particular, nephews and nieces.

From a regulatory perspective, nephews and nieces fall within the so-called Group III category of kinship, together with siblings and certain other relatives. This group has traditionally been subject to less favourable tax treatment: lower reductions than those available to direct descendants, higher multiplying coefficients and, in most regions, the absence of significant discounts. The result is a markedly heavier tax burden which, in some cases, may compromise the economic viability of the transfer.

This framework reflects a traditional conception of the family system, in which wealth is transferred linearly from parents to children. Under this model, nephews and nieces played only a marginal role in inheritance matters. However, Spain’s social and demographic reality is evolving rapidly.

Declining birth rates, the growing number of households without direct descendants and the lack of interest among descendants in business continuity are altering patterns of wealth transfer. In this new context, nephews and nieces are no longer exceptional heirs but, in many cases, the natural recipients of family wealth. In addition, it is not uncommon for them to take on a significant role in caring for elderly relatives or in ensuring the continuity of certain assets, whether personal or business-related.

In response to these situations, some autonomous communities are showing greater awareness and adapting their legislation accordingly.

It is true that, in the area of family businesses, the reduction has in many cases already been extended to nephews and nieces. Inheritance and gift tax legislation provides for a very significant reduction — which may reach 95% or even 99%, depending on the autonomous community — for the transfer of business shareholdings, provided that certain requirements relating to the business activity or continuity are met. This approach introduces a shift in the system: the determining criterion is no longer exclusively the degree of kinship, but rather economic continuity.

This development has become even more relevant in light of recent legislative changes. Several autonomous communities have approved discounts on the tax payable for nephews and nieces, in line with those already applicable to inheritances involving direct descendants. These include the Community of Madrid, the Valencian Community, the Balearic Islands and the Canary Islands, the latter providing full equal treatment for relatives falling within the closest kinship groups. This represents the first measure introducing direct and widespread tax relief for this category of relatives.

However, beyond this specific case, the general rule remains that nephews and nieces continue to bear a heavier tax burden than direct relatives in most autonomous communities. As a result, situations in which there are no factors — such as a family business — allowing significant reductions to be applied are particularly complex.

In such scenarios, estate planning becomes essential. Forward planning through gifts, the proper structuring of assets or analysing the territorial impact can make a substantial difference to the final tax bill.

For all these reasons, the role of specialised advice is crucial. The growing complexity of the tax, together with the regulatory differences between autonomous communities, requires a technical and strategic approach capable of adapting each case to the various alternatives available within the legal framework.

Citywire 8.6.26