New to the United States? The U.S. tax system operates differently from most other countries — and your obligations depend heavily on your residency status. This guide explains what you need to know for your first U.S. tax return.
If you recently moved to the United States — whether on an H-1B visa, as a green card holder, as a student on an F-1 visa, or as a new citizen — you likely have U.S. tax filing obligations. The U.S. tax system is unique in that it taxes its citizens and residents on their worldwide income. This means that even income you earn from sources outside the U.S., or accounts you maintain in your home country, may need to be reported to the IRS.
Your specific obligations depend on your tax residency status, which is determined by a set of objective tests under U.S. law — not by your immigration status alone. A green card holder is generally a U.S. resident for tax purposes, but an H-1B worker may also be a resident (or dual-status) depending on how many days they've been in the U.S. Understanding your status is the first and most important step.
This guide walks through residency determination, the types of income you must report, special rules for your first (or last) year in the U.S., treaty benefits, and common pitfalls for new immigrants. Tax laws are complex and facts vary — this guide is informational and does not replace personalized advice from a CPA.
The IRS determines whether you are a resident alien or non-resident alien using two independent tests. Meeting either one makes you a U.S. tax resident.
You are a U.S. tax resident if you are a lawful permanent resident of the United States at any time during the calendar year. This status continues until it is revoked or administratively abandoned. Even if you spend most of the year abroad, holding a green card generally makes you a U.S. tax resident.
You meet this test if you are physically present in the U.S. for:
Your first year in the U.S. (and sometimes your last) may be a dual-status year: part of the year taxed as a non-resident and part taxed as a resident. Different rules apply to each portion — deductions, filing status, and what income is taxable all differ. This is one of the most common areas where new immigrants need professional help.
Once you know your residency status, the next step is determining what forms to file and what income to report:
If you're a U.S. tax resident (green card or substantial presence), you generally file Form 1040 — the same form U.S. citizens use. You report your worldwide income: wages, self-employment income, interest, dividends, rental income, and capital gains from anywhere in the world. You can claim the standard deduction or itemize, and you may qualify for credits like the Child Tax Credit and Earned Income Tax Credit.
If you're a non-resident, you generally file Form 1040-NR and report only your U.S.-source income. You cannot claim the standard deduction, and your available credits and deductions are more limited. Certain types of U.S.-source investment income (such as bank interest) may be exempt for non-residents.
In a dual-status year, you may file a dual-status return that combines elements of both resident and non-resident treatment. The rules are complex: you cannot file jointly with a U.S. spouse unless you make a special election (the 6013(g) election) to be treated as a full-year resident. Most dual-status filers benefit from professional preparation.
As a U.S. tax resident, your worldwide income is reportable. Here are the most common foreign reporting scenarios for new immigrants:
The United States has income tax treaties with over 60 countries, including China, India, Canada, Mexico, the United Kingdom, and many others. Treaties can override or modify certain U.S. tax rules, potentially reducing or eliminating tax on specific types of income. Common treaty benefits include:
Treaty benefits are not automatic. You must claim them on your tax return, generally by filing Form 8833 to disclose the treaty position. Failing to disclose can result in penalties, even if the treaty position is valid. Always work with a CPA who understands treaty interpretation.
Our CPA is bilingual in English and Chinese and specializes in tax returns for new immigrants, H-1B workers, and cross-border families.
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IRS Circular 230 Disclosure: Any tax advice contained in this communication is not intended or written to be used, and cannot be used, for the purpose of avoiding federal tax penalties or promoting, marketing, or recommending any transaction or matter addressed herein.
Important: Do not send sensitive personal information such as Social Security numbers or banking details through unsecured forms or email. Use our secure client portal for document uploads. The information on this page is for general informational purposes only and does not constitute professional tax advice. Every taxpayer's situation is unique — please consult with a CPA regarding your specific facts and circumstances.