Startup Tax in Spain: 15% CIT, 50% Angel Deduction, and €50K Stock Option Exemption

Spain's Start-Up Act (Ley 28/2022, de 21 de diciembre, de fomento del ecosistema de las empresas emergentes) introduced a comprehensive set of tax incentives for qualifying innovative startups: a reduced 15% corporate income tax rate for the first four profitable years following ENISA accreditation (compared to the general 25% rate), a 12-month CIT deferral for the first two profitable years without guarantees, a 50% angel investor IRPF deduction on qualifying investments up to €100,000 per taxpayer per year (Art. 68.1 LIRPF), and a €50,000 annual IRPF exemption for employee delivery of startup shares or options (Art. 42.3.f LIRPF, increased from the previous €12,000 limit). All benefits are conditioned on ENISA accreditation — the company must be accredited as an innovative startup by ENISA (Empresa Nacional de Innovación) before the first profitable year closes. Failing to obtain accreditation in time forfeits the reduced rate and deferral permanently.

We advise startups from the earliest stage on the complete Startup Act tax framework — ENISA accreditation management, CIT rate election and compliance, employee equity plan design, angel investor documentation, and coordination with R&D deduction planning under Arts. 35–36 LIS.

Why ENISA Accreditation Timing is the Single Most Critical Decision for a Spanish Startup

The 15% CIT rate and the 12-month deferral apply from the first profitable tax period following accreditation. If the company becomes profitable before obtaining accreditation, those first profitable years are taxed at the general 25% rate — permanently. There is no retroactive accreditation. For a startup generating €1M in its first profitable year, the difference between 15% and 25% is €100,000 in that year alone. Across four profitable years with growing revenue, the cumulative saving can be €500,000+.

The €50k employee equity exemption and the 50% angel investor deduction are independently valuable and have their own conditions, but they too require careful structuring from the outset. An employee option pool set up without reference to Art. 42.3.f LIRPF conditions — plan design, market price at grant, holding period commitments — may not qualify for the exemption when options vest and are exercised. An investor who subscribes for shares without the company’s certification documentation may not be able to claim the 50% IRPF deduction in their annual return.

Our Advisory Process for Spanish Startup Tax Optimisation Under Ley 28/2022

We engage at or before incorporation, or at the latest immediately when the startup begins generating revenue. The first conversation is always about ENISA accreditation timing: is the company still within the five-year (or seven-year) window, and is there a risk that the first profitable year will close before accreditation is obtained? We manage the ENISA application proactively to protect the accreditation window.

For employee equity, we design the stock and option plan documentation with specific attention to Art. 42.3.f LIRPF conditions: the plan must be available to all employees under equivalent conditions, options must be granted at or above market price, and the holding period commitment must be documented. We prepare the payroll tax treatment for each grant and exercise event and advise on the interaction with secondary market liquidity events and M&A transactions.

For angel investors, we prepare the company’s certification documentation — the evidence that the company qualifies as an innovative startup for Art. 68.1 LIRPF purposes — and provide each investor with the documentation they need to claim the 50% deduction in their IRPF return. We track the holding period (3–12 years) and advise investors on exit timing relative to the holding period conditions.

Regulatory Framework: Ley 28/2022 (Start-Up Act), Art. 42.3.f LIRPF, Art. 68.1 LIRPF, and Arts. 35–36 LIS

Ley 28/2022 establishes the innovative startup definition, ENISA accreditation conditions, and the general framework for all Start-Up Act benefits. Art. 42.3.f LIRPF provides the €50k annual equity exemption. Art. 68.1 LIRPF provides the 50% angel investor deduction (up to €100k base). Arts. 35–36 LIS provide the R&D and technology innovation deductions (25% base + 42% incremental for R&D; 12% for technology innovation) that are compatible with the 15% Start-Up Act CIT rate.

The no-quarterly-instalment benefit (no Modelo 202 for the first two years of activity) is provided under the general LIS quarterly instalment rules as applied to newly incorporated entities — the Startup Act confirms this treatment extends to qualifying startups regardless of their actual revenue level in those first two years.

Real Results in Startup Tax Advisory Under the Spanish Start-Up Act

• ENISA accreditations managed before the first profitable year closed, securing the 15% rate and 12-month deferral.
• Employee option plans structured to qualify for the €50k annual IRPF exemption, with payroll tax treatment prepared for each grant, vesting, and exercise event.
• Angel investor documentation packages provided to seed and Series A investors, enabling the 50% IRPF deduction on qualifying investments.
• R&D deduction analysis that combined the 15% CIT rate with Arts. 35–36 LIS deductions, achieving effective CIT rates materially below 15% for research-intensive startups.
• CIT deferral election for the first two profitable years, preserving cash for reinvestment at the critical growth stage.