US SB199

Reduces U.S. withholding tax rates on interest, dividends, and royalties paid to qualified Taiwan residents from 30% to 10% (or 15% for most dividends, 10% for qualifying corporate dividends from 10%+ shareholders)

Exempts qualified Taiwan residents from U.S. tax on wages paid by non-U.S. employers, entertainment/athletic income under $30,000 annually, and income from international shipping/aircraft operations

Establishes "limitation on benefits" rules requiring Taiwan corporate entities to meet ownership tests (50%+ Taiwan ownership), public trading requirements, or qualified subsidiary status to claim treaty benefits

Authorizes the President to negotiate a formal U.S.-Taiwan tax agreement, contingent on reciprocal benefits from Taiwan and requiring congressional approval through implementing legislation

Creates framework for resolving dual residency between U.S. and Taiwan using tie-breaker rules based on permanent home, center of vital interests, and habitual abode