1. ENI and simplified category B regime: individual independence
ENI is the most-used form to launch an independent activity in Portugal, with an attractive simplified fiscal regime.
ENI (Empresário em Nome Individual) is the Portuguese equivalent of the French sole proprietorship. No share capital required, fast registration with Autoridade Tributária (AT) and Segurança Social. The NIF (Número de Identificação Fiscal) is mandatory, and the CAE code (Classificação Portuguesa das Atividades Económicas) identifies the activity. ENI is often preferred for freelancers, consultants, service providers, and craft activities launching solo. The founder is jointly and personally liable on their personal assets.
The simplified category B regime (rendimentos empresariais e profissionais) is the most-used fiscal option among ENIs. It applies a flat coefficient to turnover to determine taxable profit: 15% for commerce and industry, 75% for services and liberal professions, 35% for hospitality and restauration, 95% for intellectual property income. The result is then subject to IRS (Imposto sobre o Rendimento das Pessoas Singulares) per the Portuguese progressive scale: 13.25% up to €8,059, then progressive brackets up to 48% beyond €81,199 (2025 rates, after 2024 reform).
The simplified regime ceiling is €200,000 annual turnover. Beyond, transition to contabilidade organizada (real accounting) is mandatory with real-profit declaration and expense deduction. The simplified regime presents a net advantage for activities with low professional expenses (consulting, intellectual services) as the 75% coefficient is generally more favorable than real-expense deduction. For high-expense activities (wholesale, transport, restauration), contabilidade organizada is more advantageous.
End of NHR regime / arrival of IFICI
The Non-Habitual Residents regime (RNH/NHR), which offered a flat 20% taxation on category B income for 10 years, was abolished in January 2024 for new arrivals. It is replaced by IFICI regime (Incentivo Fiscal à Investigação Científica e Inovação) targeted at researchers, scientists, and innovation talents. NHR beneficiaries before 31 December 2023 retain their status until the end of the initially-provided 10 years.