What a SICAV is and why it's taxed so lightly
A SICAV is a type of collective investment institution, similar in how it works to a mutual fund, but set up as a public limited company whose capital can vary as investors come and go. Its main historical tax appeal is that it's taxed at 1% under corporate tax on its profits, versus the general 25%, a rate originally designed not to tax collective savings channeled through these vehicles, similar to how index funds also don't get taxed on their internal capital gains until the individual investor realizes them.
The trade-off for that 1% rate is a strict legal requirement: a SICAV needs a minimum of 100 shareholders to be set up and maintained as such, which in practice has historically led many large family SICAVs to bring in minority shareholders with symbolic stakes solely to meet the numerical requirement, a practice Spanish regulation has increasingly tightened and scrutinized in recent years.
What a holding company is and how it differs from a SICAV
A holding company (sociedad patrimonial) is, unlike a SICAV, an ordinary company (it doesn't require 100 shareholders) whose defining feature is that more than half its assets are securities or items not tied to a genuine business activity: it is, in essence, a company created mainly to manage wealth (an investment portfolio, several rental properties) rather than run a genuine operating business.
That classification carries important tax consequences: a holding company is taxed at the general corporate tax rate (25%), but loses access to certain tax benefits reserved for companies with genuine business activity, such as specific reductions in inheritance and gift tax or wealth-tax exemptions that do apply to shares in operating family businesses.
A comparative example: managing a portfolio as an individual versus as a company
imagine a €5 million investment portfolio generating €200,000 a year in dividends and capital gains. Managed as an individual, those gains would be taxed under the personal income tax savings base, between 19% and 28% depending on the bracket. Managed through a holding company, they'd be taxed at the 25% corporate rate, a difference that may not pay off in the simplest scenario, especially if you eventually need to distribute that profit to shareholders, which adds a second layer of taxation as a dividend.
The real advantage of these structures rarely lies in the isolated tax rate, but in the ability to reinvest profit inside the company without needing to distribute it every year, deferring the second layer of personal taxation, and in making it easier to plan the transfer of wealth between generations within the same family.
Why these structures only pay off above a very high net worth
Both a SICAV and a holding company carry setup, accounting, audit (mandatory for SICAVs) and compliance costs that easily exceed several tens of thousands of euros a year. On a net worth of €200,000 or even €1 million, those fixed costs would easily outweigh any tax saving obtained, making the structure clearly counterproductive.
That's why these tools, unlike others we've covered elsewhere in this Academy such as ETFs or index funds, aren't relevant for the vast majority of individual savers: their break-even point tends to sit at estates worth several million euros, and using them should always come with specialized tax and legal advice.
- SICAV: taxed at 1%, but requires a minimum of 100 shareholders and mandatory audits.
- Holding company: taxed at the general 25% rate, but loses tax benefits available to companies with genuine business activity.
- Both: only pay off economically from estates worth several million euros, due to their fixed maintenance costs.
What this means if your net worth isn't in that range
For the vast majority of people, reasonable tax optimization comes from much more accessible tools already covered in this Academy: contributing to pension plans within the legal limits, using tax-free transfers between index funds, or timing when you realize capital gains well, not setting up a company whose maintenance costs would outweigh any real tax saving at that scale of wealth.
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Frequently Asked Questions
It's a collective investment institution set up as an open-ended public limited company, taxed at 1% under corporate tax in exchange for meeting strict requirements, such as a minimum of 100 shareholders.
It's a company whose main activity is managing wealth (securities or real estate) rather than running a genuine business. It's taxed at the general 25% corporate tax rate, but loses certain tax benefits reserved for companies with genuine business activity.
It's a legal requirement to be set up and maintained as such, designed so the 1% tax benefit is reserved for genuine collective investment vehicles rather than structures serving a single large family estate.
As a general benchmark, from several million euros, since setup, accounting, audit, and compliance costs usually outweigh any tax saving on smaller estates.
Much more accessible tools: pension plans within the legal limits, index funds with tax-free transfers, and good timing on when to realize capital gains, which cover most of the reasonable tax optimization without a company's fixed costs.