Portugal Taxes 2025: How to Pay Less and Stay Fully Compliant

Yes. All tax residents in Portugal must file an annual tax return (IRS), even under the NHR or new IFICI regime. The regime affects how your income is taxed, not whether you file.

Portugal introduced the IFICI (Incentivo Fiscal à Investigação Científica e Inovação) regime, which offers a flat 20% tax rate on qualifying income for eligible new residents. It's narrower than NHR but still offers significant benefits for those who qualify.

In most cases, yes. Portugal has double taxation agreements (DTAs) with over 80 countries. These treaties determine which country has taxing rights and provide mechanisms to avoid being taxed twice on the same income.