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Portuguese Nationality Law · 2026
Dual Citizenship in Portugal: Global Legal Matrix & Tax Rules (2026)
Portugal fully permits multiple citizenships with zero requirement to renounce original nationality. Compare country-specific retention rules, bilateral treaties, and tax obligations under CIRS Article 16.
Country Compatibility Matrix
Portugal allows multiple citizenships with zero restrictions. Country-by-country legal breakdown for US, UK, Canada, India, China, Germany, and South Africa.
Passport vs Tax Residency
Does having Portuguese citizenship trigger taxes? How CIRS Art. 16 works, why Portugal does not tax citizenship, and cross-border US/UK expat rules.
Related citizenship & residency guides
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