Sao Tome and Principe, Singapore, Thailand, Costa Rica: Tax Rates & Startup Ecosystem Compared
Side-by-side breakdown of tax rates, startup ecosystem, remote work, and 6 more dimensions for founders choosing where to incorporate in 2026.
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Thailand and Sao Tome and Principe tax all worldwide income once you become a tax resident (top rate: 35%). Singapore and Costa Rica do not - only locally-sourced income is taxed. This is a fundamental structural difference that affects your total effective tax burden.
Both countries tax worldwide income, but the top personal income tax rates differ materially. Thailand: 35% vs Sao Tome and Principe: 25%. Both apply to all global earnings once you establish residency.
Not tax advice. Tax laws change frequently. Verify with a qualified professional before making residency decisions.
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