| Tax Residency Requirement | 💡 Optional (only if staying 183+ days/year) | 🔴 Mandatory (183+ days/year required) |
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| Worldwide Income Taxation | ✅ Only if tax resident | ✅ Yes, all tax residents |
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| Special Tax Benefits | ❌ No automatic tax incentives | ❌ No special tax incentives |
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| Double Taxation Agreements | ✅ Yes, Portugal has agreements | ✅ Yes, Spain has agreements |
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| Wealth Tax | ❌ No wealth tax in Portugal | 🔴 Yes, Spain applies a wealth tax |
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| Inheritance & Gift Tax | ✅ Low or none for close family | 🔴 Inheritance and gift tax applies |
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| Capital Gains Tax | 💰 28% on non-property gains (exemptions apply) | 💰 19-26% depending on amount |
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| Property Tax (IMI/IBI) | 🏡 0.3% - 0.45% annually (varies by region) | 🏡 0.4% - 1.1% annually |
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