When Are You a U.S. Tax Resident? Rules & Tests Understanding when you are a U.S. tax resident is very important, especially if you are living, working, or investing in the United States. Being a U.S. tax resident means that the U.S. government will tax you on your worldwide income. But how do you know if you are a tax resident? The U.S. uses specific rules and tests to decide this.
The first and most common rule is called the Green Card...