Family Office Tax: Protecting and Transmitting Wealth Across Generations

Tax advisory for Spanish family offices and high-net-worth individuals requires managing four tax layers simultaneously: the corporate income tax (IS) position of the holding structure, the wealth tax (IP) exposure on the family's net assets, the inheritance and gift tax (ISD) on intergenerational transfers, and the personal income tax (IRPF) on distributions. Spain provides powerful exemptions for qualifying family business structures: Art. 4.Ocho.Dos of Ley 19/1991 (IP) exempts qualifying family business shares from wealth tax when management functions, remuneration, and participation thresholds are met; Art. 20.2.c of Ley 29/1987 (ISD) provides a 95% reduction on the inheritance tax base for family business transfers; Art. 21 of Law 27/2014 (LIS) provides a 95% exemption on dividends and capital gains at the holding level; and the ETVE regime (Arts. 107–108 LIS) provides zero IRNR withholding on distributions to non-resident family members. The reform of the SICAV regime by Ley 11/2021 — requiring 100 genuine investors for the 1% CIT rate — has made these exemptions and the holding structure the primary tax planning tools for Spanish family offices.

We provide integrated family office tax advisory that covers every layer — from the IS optimisation of the holding structure to the IP and ISD planning for the family’s personal tax position — with the long-term succession plan as the anchoring objective.

Why Integrated Planning is Essential for Family Offices — The Interaction Between IS, IP, ISD, and IRPF

The Art. 4.Ocho.Dos IP exemption and the Art. 20.2.c ISD reduction are among the most powerful tax benefits available in Spanish law — but they are also the most fragile. Both depend on a set of conditions that must be met simultaneously, maintained continuously, and documented rigorously.

For the IP exemption: the company must carry out a genuine economic activity (not merely hold financial assets), a family member must perform effective management functions, those management functions must generate remuneration exceeding 50% of the manager’s total earned income from all sources, and the family must hold the qualifying participation level. Failing any one of these conditions in any tax year means the shares are included in the IP base for that year — potentially a very large liability for illiquid family business shares.

For the ISD 95% reduction at succession: the shares must have qualified for the IP exemption in the year of death (so the IP conditions must have been continuously maintained), and the heir must hold the shares for at least 10 years (5 in some autonomous communities). A failure of the IP conditions in the year of death eliminates the ISD reduction on the inheritance — potentially converting a manageable transfer into a liquidity crisis for the family.

Our Advisory Process for Family Office Tax Structuring

We begin with a comprehensive family office tax diagnostic: mapping all entities in the holding structure, all family members and their tax positions, all qualifying and non-qualifying assets, and all identified IS, IP, ISD, and IRPF exposures. We identify the gap between the current position and the optimal structure.

The holding structure review covers Art. 21 LIS optimisation (ensuring all qualifying participations benefit from the 95% exemption), ETVE election for international portfolios (zero-withholding on distributions to non-resident family members), and CIT rate efficiency across the holding group. For families with Canary Islands operations or international investments, ZEC and ETVE structuring may compound the efficiency further.

IP exemption compliance is an annual exercise: we review the management function conditions, remuneration proportions, and participation levels for each qualifying share package held by each family member, update the documentation, and advise on any adjustments needed to maintain the exemption.

Succession planning integration ensures that the ISD 95% reduction conditions are met at the moment of each transfer — not retrospectively discovered to be absent. We coordinate with our succession planning practice for the legal instruments (governance protocols, shareholder agreements, usufruct arrangements) that maintain the qualifying conditions through generational change.

Real Results in Family Office Tax Advisory

• IP exemption documentation and compliance that ensures qualifying family business shares are fully exempt from wealth tax each year.
• ISD succession plans structured around Art. 20.2.c to reduce inheritance tax on family business transfers from millions to hundreds of thousands.
• Art. 21 LIS compliance that maximises the 95% dividend and capital gains exemption at the holding level, with effective IS rates on qualifying income of approximately 1.25%.
• ETVE election and zero-withholding distributions for non-resident family members and international branches of the family.
• Post-SICAV investment portfolio restructuring into Luxembourg vehicles and direct portfolio mandates following the Ley 11/2021 reform.