RSUs in Spain. Spanish law has no figure called an RSU. Your tax comes from three places at once: what the plan says, where you were resident while it vested, and what you did with the shares afterwards. Change one of the three and the answer changes, sometimes by a lot of money.
A warrant (and its French equivalent, the bon de souscription d'actions or BSA) is a right to subscribe new shares in the company at a fixed price. Seen that way it looks very much like a share option, which is why the two are often treated as if they were the same. They are not, and the difference lies not in the mechanics but in the reason you hold it: a warrant can reach your hands because it is given to you as part of your pay, or because you buy it by paying what it is worth, just as any investor buys. Which side of that line it falls on decides whether what you obtain later is employment income, which goes to the general base at your marginal rate, or a capital gain, which goes to the savings base, the separate band of Spanish income tax with lower rates.
The rate difference between the two is enormous, and that is why it is one of the points reviewed most often. This guide explains exactly where the line sits, how each side is documented and what happens if the tax authorities do not share your characterisation.
The two ways in
| Warrant received as pay | Warrant subscribed at its value | |
|---|---|---|
| Why you hold it | Because of your work or your services | Because you bought it, like any investor |
| What you pay on receiving it | Nothing, or a token amount | The premium: what the right is worth |
| Characterisation of what you obtain | Employment income or business income | Capital gain or loss |
| Income tax base | General, at the marginal rate | Savings |
| If it goes badly | You have paid tax on something that never materialised | A capital loss, which can be offset within its own category |
Put another way: whoever pays for the warrant what the warrant is worth is not receiving pay, they are investing. And whoever receives it free because of who they are inside the company is receiving pay, whatever the paper is called.
The premium is the evidence, and it has to be calculated
The investment argument rests on one fact: that the price paid for the warrant matches its value on that date. And the value of a subscription right is not zero just because the exercise price is high: it has time value while there is time left to run and volatility. Paying a token euro for a right worth a good deal more is not acquiring at market value; it is receiving an advantage, and the difference is pay.
That is why, in deals that are done properly, there is a valuation report on the warrant at the date of subscription, prepared by a third party with an explained method, and proof that the premium was actually paid from an account belonging to the subscriber. In French practice with BSAs this is almost standard. In improvised deals there is neither one nor the other, and then treating it as an investment is hard to defend.
There is a second front: who the offer was made to. If the warrant is offered only to people linked to the company, on terms no outside investor could obtain, the tax authorities can argue that the reason is still the service relationship even though a payment was made. The argument is easier to defend when there are outside investors who subscribed on the same terms, or when the instrument is not tied to staying with the company.
The clauses that give away pay
When we read the document we look for features that only make sense in an employment contract, not in an investment contract:
- A condition that you stay. If you lose the warrant when you leave the company, the right is rewarding your continued service, not your money. This is the strongest sign.
- A vesting schedule. An investor who pays today does not see the investment vest in tranches over four years.
- An absolute ban on transfer. A financial asset bought at market price can usually be assigned; a personal incentive cannot.
- Performance conditions. If the right is triggered by reaching professional targets, it is variable pay under another name.
- Automatic buy-back on departure. Especially if it is at the price paid, without capturing the growth in value.
This is not a list that disqualifies automatically: an instrument can have one of these features and still be a real investment. But the more of them appear, the weaker the position, and the client is entitled to know that before deciding how to file.
If it is pay: when, and for how much
When the warrant is received as payment, the logic is the same as for any right given to an employee. If the right cannot be transferred (the usual case in these schemes), the approach we apply is that there is no income until it is exercised, and then the income is the difference between the market value of the shares subscribed and what was paid for them, adding in any premium paid at the time. If the right could be transferred freely, the income arises on delivery, for the value of the right itself.
It is worth saying plainly: Spanish income tax has no article devoted to warrants given as pay. What exists are the general rules in articles 17.1, 14 and 43 of the Spanish Income Tax Act, applied to a contract that was not written with them in mind. It is a disputed area; it is argued with its reasoning, and the outcome is not guaranteed.
If it is an investment: how the gain is calculated
The route is that of any financial asset. If you sell the warrant, the gain is the difference between what you receive and the premium you paid. If you exercise it and subscribe the shares, there is no change in your assets at that point: the acquisition cost of the shares is the premium paid plus the subscription price, and the gain appears when you sell the shares. If the warrant expires worthless, there is a capital loss for the lost premium, which goes into the savings base under the offsetting rules for its category.
If the shares subscribed are not listed, the valuation floor in article 37.1.b) of the Spanish Income Tax Act also comes in when you sell them, as we explain in market value when the company is not listed.
The French BSA, in a Spanish case
BSAs arrive mostly with French companies and with employees who were in France and now live in Spain. Two warnings.
The first: we do not advise on French tax law. If the transaction also has consequences there, the client appoints the French adviser and we coordinate with them. Saying so up front avoids the misunderstanding that a Spanish report covers both countries, which it does not.
The second: when the right was generated while working in another country and materialises while you are resident in Spain, taxing rights have to be shared out under the applicable double tax treaty, and that means rebuilding the working days in each territory over the generation period. It is documentary work done with calendars, contracts and certificates, and it should start before the milestone arrives. The document that holds all of that together is the tax residence certificate, and it has its own guide.
How it differs from an ordinary plan option
Do not lose sight of the fact that a warrant and a stock option given as pay are not the same, even if they look alike. The plan option is a right against the company to buy existing or newly issued shares, granted as an incentive and normally with no outlay at all on receipt. The warrant is a security with a life of its own, which in many jurisdictions is issued, subscribed and can be traded, and whose subscription price is precisely what opens the door to treating it as an investment.
Two practical consequences follow from that difference. The first is that the warrant carries a figure that the option does not have (the premium paid), and that figure is what has to be documented. The second is that, when the conclusion is that the warrant was pay, the treatment ends up very close to that of an option, and everything we set out in the three moments of an option applies again, including the asymmetry between income in the general base and a possible loss in the savings base.
The warrant in the hands of someone who is not an employee
One situation turns up more and more: warrants given to an adviser, a non-executive director or a service provider who invoices the company. There is no employment relationship, so there is no employment income and no chance of claiming breaks designed for employees. If the right is received in return for professional services, what you have is business or professional income, with its own timing rules, its own payment on account and, depending on the case, its own VAT treatment as part of the consideration for a taxable supply.
It is a scenario that should be resolved at the start, because it affects the invoice that is issued and the tax forms that are filed, not only the annual return. Our page on invoicing clients abroad from Spain covers this situation when the company is outside Spain.
How a debatable characterisation is documented
The sample shows the part that matters most when the characterisation is not settled: how the reasoning is set out, where the risk is flagged and what the client is expressly warned about. Twelve anonymised pages from a case handled by this firm, written in Spanish.
What happens if the tax authorities recharacterise it
The scenario to keep in mind when deciding is the worst one: you declared a capital gain at savings rates and the tax authorities argue it was employment income at your marginal rate. The difference in tax can run to several tens of points, and on top of that come late-payment interest and, depending on the case, a penalty. Against that there is no defence other than the one built at the time: the valuation report, the proof that the premium was paid, the absence of clauses requiring you to stay and the existence of other independent subscribers.
The useful conversation, therefore, is the one beforehand. If you are about to subscribe warrants or BSAs in a company you provide services to, the question to answer before signing is what documentation you will be able to show five years from now. That is the work we do in this service: you can start it in the stock options and equity form, or first read the general scheme on the page for this service.