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cross-border-taxAnswered

What is the difference between a U.S. totalization agreement and an income tax treaty when someone works across borders?

LG
Leo Gardnernew member
April 11, 2026 1 answer
cross-bordertotalizationtax treatysocial securityIRS

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I want the serious distinction, not a blended expat answer. Please explain what totalization agreements are actually designed to solve, why they are about social taxes and benefit coverage, and why that does not automatically answer where salary is taxed for income-tax purposes.

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