Welcome to the USA and all Her Tax Complexities

Foreign citizens moving into the U.S. are an increasing population due to the ongoing globalization of business. They tend to be accomplished professionals who save at a much higher rate than their American peers. However, they also have far more complicated financial affairs than a typical American, and both their financial planning and investing needs can be quite different.  As a financial planning practice that specializes in cross-border families, many of our clients are foreign nationals in the U.S. who are looking for clarity on their taxes and other financial situations. This article is a primer on the typical tax issues confronting this group.

Foreign nationals living in the United States are technically referred to as “Resident Aliens” by the IRS, but they can also be known as “Tax Residents,” “U.S. Residents,” or “Permanent Residents” (if they hold a Green Card). It is important to understand that while they are here in the U.S., most will generally be taxed the same as any other American, except with the added complexity that they often own assets located outside of the U. S. and have additional foreign connections in their lives.

Learning the U.S. Tax System

Foreign nationals often struggle with understanding the U.S. tax code, with its complexity and worldwide reach. For those who are used to a simplistic or “flat” tax system, the U.S. tax code and its requirements can be truly mind-boggling. Similarly, foreign nationals are often faced with making decisions as to various retirement and investment options that are completely unfamiliar.

Many foreign nationals who work for large corporations come to the United States on short-term work visas or temporary assignments, where they are somewhat insulated from the full ramifications of becoming a U.S. tax resident. They will usually be required to file a U.S. tax return and will be taxed on U.S.-sourced income but often not on any foreign-sourced income, depending on their visa status.

Becoming a U.S. Resident for Tax Purposes

Foreign citizens who are newly arrived in the United States often misunderstand both whether they will be classified as a tax resident as well as what it means to be so classified. Some will have accumulated assets such as cash, real estate, investment portfolios, and retirement savings accounts overseas. These foreign assets can be immediately subjected to U.S. taxation, which often comes as a big and unwelcome surprise. For that reason, correctly planning a move to the U.S. is extremely important.

There are situations where a visiting worker can remain a non-resident for tax purposes and will only be taxed on his or her U.S-sourced income. However, U.S. tax residents are taxed on their worldwide income. For example, consider someone who owns a foreign business and comes to the United States for a short time to launch a subsidiary, and then ends up staying here longer than originally planned. This person could end up being classified as a U.S. tax resident, which could potentially expose their entire worldwide business operation to U.S. taxation. That would come as quite a nasty surprise to someone who did not realize they had become a U.S. tax resident.

Two Tests to Determine U.S. Residency

There are two tests used to determine whether a foreign person has become a U.S. tax resident. Anyone who meets the requirements of either of these two tests will be treated as a U.S. tax resident. These two tests are:

  1. The lawful permanent resident test
  2. The substantial presence test

Lawful Permanent Resident Test (the “Green Card” Test)

The first of the two tests for determining whether someone is a U.S. tax resident is very straightforward. A foreign national is considered a U.S. permanent resident if he or she has been issued a Green Card granting them the privilege of residing permanently in the United States. One important feature of a Green Card is that it can be surrendered by its holder, and, of course, it can also be revoked by the U.S. immigration authorities. The tax status and treatment of a Green Card holder is, for almost all purposes, exactly the same as that of a U.S. citizen.

Substantial Presence Test

The second test, known as the “substantial presence test,” is more complicated and relies on the number of days someone has been physically present in the United States for the current year plus the two prior years. Being present here for 183 days in the current year means the test has already been met. According to the IRS:[1]

You will be considered a United States resident for tax purposes if you meet the substantial presence test for the calendar year. To meet this test, you must be physically present in the United States on at least:


  • 31 days during the current year, and
  • 183 days during the 3-year period that includes the current year and the 2 years immediately before that, counting:

–  All the days you were present in the current year, and

–  1/3 of the days you were present in the first year before the current year, and

–  1/6 of the days you were present in the second year before the current year.

There are certain exceptions to the substantial presence test. For example, any days spent in the United States as an exempt person—such as a government official here on business, or a traveling teacher, student, or athlete—will not count as part of the total number of days. And, according to the formula, if someone spent less than 31 days in the current year, he or she does not meet the test. Another exception is called the “closer connection exception.” Here, even if one meets the substantial presence test according to the above formula, it can be argued that there is a taxable residence maintained in another country with a closer connection to that country. This exception, however, is pretty rare. Finally, if one has remained a tax resident in a home country, it is possible to be able to use an international treaty—if there is one—to avoid being considered a U.S. resident.

Once the residency status is determined, one major complication for foreign citizens is the increased reporting of personal foreign assets to the U.S. government via the Financial Crimes Enforcement Network (FinCEN) 114, Report of Foreign Bank and Financial Accounts (FBAR) as well as Form 8938, Statement of Special Foreign Financial Assets. Foreign citizens often view these requirements with suspicion and as an invasion of privacy.

Foreign Citizens Leaving the United States for Short-Term Assignments

Occasionally, foreign citizens who are permanent tax residents of the United States will pursue an opportunity abroad without necessarily planning to stay away from the United States forever. For that reason, many of them do not give up their Green Card just because they’ve left. The downside to holding onto their Green Card, however, is that they continue to be viewed—and taxed—by the IRS in the exact same way that an American citizen is taxed for as long as they retain their permanent tax residency. Of course, this also applies to foreign nationals who have become U.S. citizens or dual citizens.


We at Worldview always recommend to clients that they work with professional tax preparers familiar with cross-border issues, due to their inherent complexity.



Article originally written for Spidell’s Federal Taxletter, May 2018