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What is the interest withholding rate between South Korea and United States?

Under the South Korea-United States tax treaty, the withholding rate on interest is 12%. Certain types of interest (such as government bonds) may qualify for additional exemptions under specific treaty articles. This 12% rate compares to a median of 10% across South Korea's 48 active treaty partners, and 10% across United States's 64 active partners.

Network Comparison

South Korea

Rank 46 of 48 active treaties (lowest rate = #1)

Lower rates with: Turkey (10%), Vietnam (10%), South Africa (10%)

Higher rates with: Australia (15%), Portugal (15%)

United States

Rank 50 of 64 active treaties (lowest rate = #1)

Lower rates with: Romania (10%), Venezuela (10%), Vietnam (10%)

Higher rates with: Jamaica (12.5%), Brazil (15%), Egypt (15%)

Sources

Data last reviewed: 2026-04-07

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.
View full South Korea-United Statestreaty details →
Guide: Interest withholding tax explained→

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