Final Answer:
The Green card test relies on immigration status, considering green card holders as U.S. residents. The Substantial presence test evaluates the number of days an individual spends in the U.S. over a three-year period, determining tax residency. So, the correct options are:
a. Green card test
b. Substantial presence test
Step-by-step explanation:
The two tests for U.S. tax residency are the Green card test and the Substantial presence test. The Green card test is a straightforward assessment based on immigration status. Individuals holding a U.S. green card are deemed residents for tax purposes, regardless of the duration of their physical presence in the country. This test provides a clear criterion for tax residency, tying it directly to legal permanent residency.
On the other hand, the Substantial presence test takes into account the number of days an individual has been physically present in the United States over a three-year period. It uses a weighted formula, counting each day in the current year as a full day, one-third of the days in the preceding year, and one-sixth of the days in the second preceding year. If the total exceeds 183 days, the individual is considered a U.S. tax resident. This test is designed to capture individuals who may not have a green card but have a significant presence in the country over time.
Both tests play a crucial role in determining an individual's tax residency status, reflecting the intricate interplay between immigration status and physical presence. Understanding these tests is essential for individuals navigating the complexities of U.S. tax regulations.