Receiving company shares? You may pay less income tax - if you pass the tax authority test
Receiving part of your salary in shares can significantly reduce your tax burden, but accessing the benefit depends on strict criteria and rigorous documentation from employers.
The allocation of shares to employees may grant access to IRS tax benefits, but it is not automatic. The Portuguese Tax Authority (AT) allows a more favorable regime, provided companies meet strict criteria and can prove them - something that, in practice, puts many employers to the test.
In a recent binding ruling, the Tax Authority clarified the tax treatment of instruments such as Restricted Stock Units (RSU) and Employee Stock Purchase Plans (ESPP), increasingly used in technology companies and startups.
How are these earnings taxed?
From a tax perspective, these gains continue to be classified as employment income (Category A) - ruling out any interpretation as capital gains. However, they may benefit from a special regime created in 2023, under Law No. 21/2023, aimed at reinforcing the attractiveness of startups and innovative companies in Portugal.
| Indicator | Value |
|---|---|
| Value considered for IRS under the special regime | 50% of the attributed value |
| Effective tax burden | ~14% (autonomous rate of 28% on 50%) |
The regime allows only half of the attributed value to be considered for IRS purposes, with an autonomous rate of 28% applied to that half - resulting in an effective burden of about 14%. Compared to progressive rates that can reach 48%, the benefit is substantial.
Who can access the benefit?
The regime is far from universal. The favorable framework depends on compliance with precise legal requirements, assessed at the level of the employer in Portugal - not the parent company in the case of a multinational.
Multinationals - Attention
The AT is clear: in the case of subsidiaries of international groups, the requirements must be assessed at the level of the employer entity in Portugal, not the parent company.
"The requirements must be assessed at the level of the requesting entity, as the employer, and not at the level of the parent company located in the USA."
- Portuguese Tax Authority
The scope goes beyond shares
The AT interpretation reinforces that the regime is not limited to shares in the strict sense. The framework "extends to all securities and equivalent rights" - which broadens the range of instruments covered and is especially relevant for hybrid or more complex plans used by international groups.
The role of proof and certification
The Tax Authority maintains a cautious position regarding the concrete validation of plans. For an RSU plan approved in 2023, the AT refused to comment on eligibility, citing lack of knowledge of changes that had occurred. For an ESPP plan from 2022, it admitted the possibility of classification but conditioned it on proof of R&D expenditure conditions.
"It is up to the company to prove that it meets the conditions and up to the AT to verify the respective evidence."
- Portuguese Tax and Customs Authority
What about plans approved before 2023?
The AT recalls the existence of a transitional regime for plans approved before 2023: these may also benefit from the new framework, provided they meet the required criteria.
Conclusion
In summary, the regime exists and can be very advantageous - but it requires companies to do their homework and be prepared to prove to the Tax Authority that they meet all requirements. For employees, the essential step is to confirm with their employer whether the share allocation plan they participate in is properly framed.
If you need support in the tax analysis of your stock or RSU plan, contact our tax advisory team for a personalized assessment.
