Ireland, Greece, United Kingdom, Portugal: Tax Rates & Remote Work Compared
Side-by-side breakdown of tax rates, remote work, startup ecosystem, and 6 more dimensions for founders choosing where to incorporate in 2026.
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United Kingdom and Greece tax all worldwide income once you become a tax resident (top rate: 45%). Portugal does not - only locally-sourced income is taxed. This is a fundamental structural difference that affects your total effective tax burden.
Ireland and Portugal and Greece have an exit tax. If you establish residency and later wish to leave, you may owe tax on unrealized gains or assets at departure. The other country in this comparison does not have an exit tax.
Portugal (IFICI (Incentivo Fiscal para a Internacionalização de Competências e Investimento)) offers a qualifying program that may exempt foreign-source income from local tax for up to 10 years. This can significantly reduce your effective rate compared to the standard regime.
Not tax advice. Tax laws change frequently. Verify with a qualified professional before making residency decisions.
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