Inheritance Tax in Cataluña: Spouses at 99%, a Sliding Scale for Everyone Else (2026)
Cataluña does not give every heir the same flat percentage the way Madrid or Andalucía do. Instead, art. 58 bis of Ley 19/2010 splits the benefit in two: a flat 99 percent bonificación for the surviving spouse, and a sliding scale for everyone else in Grupo I and II that shrinks as the inheritance grows.
Information last verified on 23 July 2026. The current version of art. 58 bis dates to Ley 5/2020, in force since 1 May 2020. No later amendment to this article was found in this review, but confirm against the current consolidated text before relying on a specific percentage.
Who is a spouse, and who is "the rest" of Grupo I and II
Article 58 bis.1 gives the surviving spouse a clean, flat 99 percent bonificación on the cuota tributaria for mortis causa acquisitions, including life-insurance sums, no matter how large the estate is. That certainty is unusual among the sliding-scale comunidades.
Everyone else in Grupo I and II, meaning descendants, adopted children, ascendants and adoptive parents, falls under art. 58 bis.2 instead, where the bonificación is not flat but calculated by bracket.
The sliding scale for descendants and ascendants
For the rest of Grupo I, the bonificación starts at 99 percent on the first 100.000 € of base imponible and tapers down, bracket by bracket, to a marginal 20 percent once the base passes 3.000.000 €. For the rest of Grupo II, meaning adult descendants and ascendants outside the spouse, the scale starts at 60 percent on that same first bracket and tapers to 0 percent above 3.000.000 €.
The practical effect is that a modest inheritance from a parent to an adult child receives close to the top rate for that group, while a very large inheritance receives progressively less relief on the portion above each threshold. This is a weighted average across brackets, not a single flat percentage, so the effective rate on a specific estate depends on exactly where its base imponible falls.
The forfeiture rule: bonificación versus other reducciones
Article 58 bis.4 attaches a condition most of the flat-rate comunidades do not have, and it applies to the non-spouse Grupo I and II beneficiaries on the sliding scale (spouses keep their unconditional 99 percent): opting into the bonificación forfeits most of the other state and Catalan reducciones such an heir might otherwise claim. The reduction for the deceased's vivienda habitual is the one named exception, so it stacks with the bonificación rather than being traded away.
This makes Cataluña the one comunidad on this site where the bonificación is not automatically the best outcome. An heir eligible for a large empresa familiar or negocio profesional reduction, for example, may come out ahead by claiming that reduction instead of the bonificación. Comparing the two routes with a gestor before filing is worth the time.
Cataluña's legítima is unusually small
One more Catalan peculiarity changes the picture before the ISD calculation even begins. Cataluña reserves only one quarter of the estate as legítima, the forced share the law guarantees to certain heirs, compared with the two-thirds general regime under the Código Civil. That smaller reserved share means a Catalan testator has far more freedom to direct the estate away from any particular heir than a testator under the common regime does.
This does not change the bonificación rate itself, but it does change how much of the estate reaches a given heir's base imponible in the first place. See the legítima and forced heirship page for the full civil-law mechanics behind that one-quarter figure.
Where this fits
This page covers only Cataluña's bonificación step. For the full state mechanism, the six-month filing deadline, and how the scale and coefficient work, see the inheritance tax overview. To compare Cataluña against the other comunidades, see the inheritance tax comparison by comunidad.
This page is general legal information about Cataluña's regional tax rules and does not constitute legal or tax advice in an individual case. Bonificaciones change with each autonomic budget; verify the current figures against the BOE or the Generalitat de Catalunya's tax portal before acting.
This page is general legal information about Spanish tax law and does not constitute legal advice in an individual case. The controlling texts are the current versions in the BOE and each comunidad's consolidated tax rules, which change frequently.
Frequently Asked Questions
Does the surviving spouse pay inheritance tax in Cataluña?
Very little. Under art. 58 bis.1 of Ley 19/2010, the surviving spouse applies a flat 99 percent bonificación to the cuota tributaria regardless of the amount inherited, one of the few flat guarantees in Cataluña's otherwise bracket-based system.
How does Cataluña's sliding scale work for children?
A descendant outside the spouse starts at 99 percent (if under 21, Grupo I) or 60 percent (if 21 or over, Grupo II) on the first 100.000 € of base imponible, and the bonificación tapers down bracket by bracket as the base rises, reaching 20 percent and 0 percent respectively above 3.000.000 €.
Can I combine Cataluña's bonificación with other reducciones?
For non-spouse Grupo I and II beneficiaries on the sliding scale, generally no: art. 58 bis.4 forfeits most other state and Catalan reducciones once the bonificación is claimed, with the vivienda habitual reduction as the named exception. A spouse’s flat 99 percent carries no such condition. Compare both routes before filing, since the reduction can outperform the bonificación in some estates.
Is the forced-heirship share the same in Cataluña as in the rest of Spain?
No. Cataluña reserves only one quarter of the estate as legítima, compared with two thirds under the general Código Civil regime, which is one of the largest differences among Spain's forced-heirship territories.