RSUs and Stock Options in Spain: How They're Taxed

The two-event structure

Understanding how equity is taxed in Spain starts with understanding that there are typically two separate taxable events — and they are governed by completely different tax rules:

1. Vesting (RSUs) or Exercise (options): Employment income event — taxed at ordinary income rates (IRPF progressive brackets, or 24% under Beckham Law)
2. Sale of shares: Capital gain event — taxed at Spain's savings tax rates (19–28% on the gain above the cost basis established at vesting/exercise)

The U.S. treats these events differently depending on the type of equity (RSU vs. ISO vs. NQSO vs. ESPP). Spain does not make the same distinctions — it has its own framework that applies regardless of how the U.S. characterizes the instrument.

RSUs: the vesting event

When RSUs vest, you receive shares. On that date, the fair market value of the shares you receive is treated as employment income in Spain — specifically, rendimientos del trabajo en especie (in-kind employment income). This is added to your other employment income and taxed accordingly.

The key question: at what rate? This depends on your tax regime:

• Standard IRPF: The vesting value is added to your salary and taxed at your marginal rate — which can reach 47% for high earners combining national and regional rates. For a €50,000 RSU vest, that is potentially €23,500 in Spanish income tax due.
• Beckham Law: The rate is a flat 24%. Because employment income during the regime is deemed Spanish-source, a U.S.-granted RSU vest is generally taxed here at 24% — not exempt. The only real question is whether part of the vest is attributable to pre-residency work (covered below).

The cost basis for future capital gains purposes is set at the fair market value on the vesting date. When you eventually sell the shares, only the gain above that value is a capital gain in Spain.

RSUs under Beckham Law: the source question

Start from the rule that trips most people up: under Beckham Law, employment income is not exempt just because it comes from a U.S. company. Article 93.2.b LIRPF deems all employment income earned during the regime to be Spanish-source — and RSU vesting income is employment income. So RSUs that vest while you are under Beckham are, as a rule, taxed here at 24%, not vested tax-free.

There is one genuine nuance, and it is contested — not a free exemption. It concerns the portion of a vest attributable to work you performed before you became a Spanish tax resident:

• The portion tied to work performed while you were still in the U.S., before your Spanish residency began, may fall outside Spanish tax — treated as income of a period before the regime applied.
• The portion tied to the period you were already a Spanish resident is Spanish-source and taxed at 24%.

Example: RSUs granted in January 2023 (when you were in the U.S.) with a 4-year monthly vest. You move to Spain in January 2025. For shares vesting after your arrival, some advisors apportion the income between the pre-residency and post-residency parts of the vesting period. This apportionment is fact-specific and has been the subject of differing AEAT/DGT interpretations — it is not a settled "50% exempt" rule, and the safe planning assumption is that in-regime vesting is taxed at 24% unless your tax advisor confirms a defensible apportionment for your grants.

For RSUs granted after you have already moved to Spain — where the entire vesting period is while you are a Spanish resident — 100% of the vesting income is Spanish-source and taxed at 24% under Beckham Law.

Stock options: the exercise event

For non-qualified stock options (NQSOs), the taxable event in Spain is the exercise date. When you exercise options, the spread — the difference between the fair market value on the exercise date and the exercise price you paid — is treated as employment income in Spain, taxed at your applicable rate (marginal IRPF or 24% Beckham).

Spain does not recognize the U.S. distinction between ISOs and NQSOs. Incentive Stock Options receive favorable U.S. tax treatment (no regular tax at exercise, capital gains treatment if holding periods are met). Spain ignores this: at exercise, the spread is ordinary employment income regardless of what type of option it was under the U.S. grant agreement.

This creates a dangerous mismatch for Beckham Law holders who exercise ISOs: in the U.S., no tax is due at exercise. In Spain, 24% is due on the spread at exercise. You must have cash to cover the Spanish tax even if you have not sold the shares.

The sale of shares: capital gains

When you sell shares — whether from RSUs or options — the gain above your cost basis (established at vesting or exercise) is a capital gain. Spain taxes capital gains at the savings tax (impuesto del ahorro) rates:

• €0–€6,000 gain: 19%
• €6,000–€50,000 gain: 21%
• €50,000–€200,000 gain: 23%
• Above €200,000 gain: 28%

These rates apply under both standard IRPF and Beckham Law — the savings rates are the same in both regimes. Capital gains are generally considered Spanish-source when the underlying asset is Spanish property; for U.S. company shares, the capital gain may be considered foreign-source under Beckham Law, potentially making it exempt. This is an evolving area of interpretation — confirm the treatment with your gestor for your specific situation.

ESPP shares

Employee Stock Purchase Plan (ESPP) shares have their own treatment. The discount you receive when purchasing shares through an ESPP — the difference between the fair market value and the price you paid — is typically treated as employment income at purchase. Any subsequent appreciation from purchase price to sale price is a capital gain. The same IRPF vs. Beckham Law framework applies to the employment income component.

The U.S. side: what still applies

As a U.S. citizen, you still file Form 1040 and report all equity compensation events to the IRS. The U.S. tax treatment (ordinary income at vesting for RSUs, preferential ISO treatment for qualifying dispositions, etc.) runs in parallel with Spain's treatment. The Foreign Tax Credit prevents double taxation on the same income: Spanish tax paid on RSU vesting income generates a credit against U.S. tax liability on the same vesting event.

Critical coordination point: your U.S. CPA and your Spanish gestor need to be aware of each other's treatment of the same equity events. A vesting date, an exercise date, a sale date — each generates entries in both countries' tax returns. These must match, and the credits must be claimed correctly.

Modelo 720 and equity

Once shares vest and are held at a U.S. brokerage, they are foreign securities from Spain's perspective. If your total foreign securities holdings exceed €50,000, Modelo 720 requires you to declare them. Unvested RSUs (rights not yet converted to shares) are generally not reportable — you do not yet have the asset. Vested, unsold shares are reportable once the threshold is crossed.

Plan for this: a large RSU vest in December could immediately trigger a Modelo 720 obligation for the following March filing deadline.

Planning implications

The timing of equity events relative to your move to Spain creates meaningful tax planning opportunities:

• Vesting before you arrive: RSUs that vest before you become a Spanish tax resident are not subject to Spanish income tax — they are taxed only in the U.S. If you have large vests scheduled and your move is flexible by a few months, the timing of your Spanish tax residency start date matters significantly.
• Exercising options before the move: If you have underwater or at-the-money options, exercising them before moving to Spain (when there is no spread or minimal spread) avoids creating a large Spanish employment income event. Exercising after moving creates a Spanish tax liability at the spread on exercise date.
• Grant date under Beckham: RSUs granted after you move to Spain, for work performed in Spain, are 100% Spanish-source at vesting and taxed at 24%. For RSUs granted before your move but vesting after arrival, only the portion tied to pre-residency work may fall outside Spanish tax — and that apportionment is contested, so plan on 24% unless your advisor confirms otherwise. Know when your grants were made.
• Sale timing: Holding shares until you leave Spain (if you will eventually leave) could potentially shift the capital gains tax jurisdiction. This is a long-horizon consideration, not a year-one one.

Common mistakes

• Assuming Beckham Law makes RSU vesting fully exempt. The source analysis is required. RSUs for work performed in Spain after your move are Spanish-source and taxed at 24% — not exempt.
• Ignoring the U.S.-Spain credit coordination. If your gestor and your CPA are not coordinating, you may pay taxes twice on the same event or miss credits you are entitled to.
• Not having cash to pay the Spanish tax at vesting. RSU vesting and option exercise can create significant Spanish tax liabilities without corresponding cash — you receive shares, not cash. Budget accordingly, or plan to sell shares at vesting to cover the liability.
• Missing Modelo 720 after a large vest. A €60,000 RSU vest that stays in your brokerage triggers the Modelo 720 securities threshold. This is easy to miss and the deadlines are hard (March 31 for the prior year).