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What is the interest withholding rate between Spain and Portugal?
Under the Spain-Portugal tax treaty, the withholding rate on interest is 15%. Certain types of interest (such as government bonds) may qualify for additional exemptions under specific treaty articles. This 15% rate compares to a median of 10% across Spain's 40 active treaty partners, and 10% across Portugal's 28 active partners.
Network Comparison
Spain
Rank 39 of 40 active treaties (lowest rate = #1)
Lower rates with: Italy (12%), Brazil (15%), India (15%)
Higher rates with: Sweden (15%)
Portugal
Rank 24 of 28 active treaties (lowest rate = #1)
Lower rates with: South Africa (10%), Belgium (15%), Brazil (15%)
Higher rates with: Ireland (15%), Italy (15%), South Korea (15%)
Important: Treaty rates require proper claim forms (e.g., IRS Form W-8BEN for U.S. treaties, HMRC DT-Individual for U.K. treaties, CRA Form NR301 for Canadian treaties) filed before payment. Limitation on Benefits (LOB) provisions may restrict eligibility. A 0% withholding rate does not mean no tax — the residence country may still tax the income. This is not tax advice.