U.S. Tax Guide for New Immigrants

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.

Your Tax Obligations as a New Immigrant

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.

Step 1: Determine Your Residency Status

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.

The Green Card Test

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.

The Substantial Presence Test

You meet this test if you are physically present in the U.S. for:

Key Point — Dual-Status Year

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.

Step 2: Understanding Your Filing Requirements

Once you know your residency status, the next step is determining what forms to file and what income to report:

1

Resident Aliens — File Form 1040

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.

2

Non-Resident Aliens — File Form 1040-NR

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.

3

Dual-Status Aliens — Special Rules Apply

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.

Step 3: Reporting Foreign Income & Assets

As a U.S. tax resident, your worldwide income is reportable. Here are the most common foreign reporting scenarios for new immigrants:

Step 4: Check for Tax Treaty Benefits

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:

Important

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.

Common Mistakes New Immigrants Make

Pitfalls to Avoid

  • Assuming you don't need to file because you just arrived — Even if you were in the U.S. for only part of the year, you may have a filing obligation. The filing thresholds for residents are based on worldwide income; for non-residents, U.S.-source income.
  • Not reporting foreign accounts and income — Many new immigrants assume they only need to report U.S.-source income. As a resident, your worldwide income is taxable. Foreign accounts also trigger FBAR and Form 8938 obligations.
  • Filing as Single when you could file as Head of Household — If you support dependents, you may qualify for the more favorable Head of Household status, even if you're married. The rules for "considered unmarried" can apply to new immigrants.
  • Not claiming treaty benefits you're entitled to — Treaty benefits can significantly reduce your tax, but they must be affirmatively claimed. Many new immigrants miss out simply because they don't know a treaty exists.
  • Ignoring state tax obligations — State income tax is separate from federal. Your state of residence (where you live and work) may require a state tax return even if the federal filing threshold isn't met.
  • Failing to coordinate with your home country's tax system — You may have ongoing filing obligations in your home country, especially if you maintain assets or income sources there. The interaction between the two systems requires careful coordination.

Frequently Asked Questions

When am I considered a U.S. tax resident?
You are a U.S. resident for tax purposes if you meet either the Green Card Test (you're a lawful permanent resident at any time during the calendar year) or the Substantial Presence Test (you're physically present in the U.S. for at least 31 days in the current year and 183 days using a weighted 3-year formula). The first year you arrive or leave may be a dual-status year — part non-resident, part resident.
What is a dual-status tax year?
A dual-status year is a year in which you are a non-resident for part of the year and a resident for the other part. This commonly happens in the year you arrive in the U.S. or the year you leave. During your non-resident period, only U.S.-source income is taxable; during your resident period, worldwide income is taxable. Special rules restrict your ability to file jointly or claim certain deductions during a dual-status year.
Do I need to report income from my home country?
If you are a U.S. tax resident, yes — your worldwide income is generally taxable. This includes wages paid by a foreign employer, rental income from foreign property, interest from foreign bank accounts, dividends from foreign companies, and capital gains from selling foreign assets. You may be able to claim a Foreign Tax Credit (Form 1116) for taxes paid to the foreign country to avoid double taxation.
Can I claim the standard deduction as a new immigrant?
U.S. tax residents can claim the standard deduction. Non-resident aliens generally cannot (with limited exceptions for students and business apprentices from India under the U.S.-India tax treaty). Dual-status filers also generally cannot claim the standard deduction unless they make a special election under Section 6013(g) or (h) to be treated as a full-year resident.
What forms do I need besides Form 1040?
Depending on your situation, you may also need: FBAR (FinCEN Form 114) if foreign account balances exceed $10,000; Form 8938 if foreign assets exceed FATCA thresholds; Form 8833 to claim treaty benefits; Form 1116 for Foreign Tax Credit; Form 2555 for Foreign Earned Income Exclusion; Form 3520 for foreign gifts or trusts; and state tax returns for each state where you lived or worked.
I'm on an H-1B visa. What's my tax status?
H-1B workers who meet the Substantial Presence Test are generally treated as U.S. tax residents and file Form 1040. In the year of arrival or departure, a dual-status filing may be needed. The specific answer depends on how many days you've been present in the U.S. over the current and prior two years. A CPA can run the substantial presence calculation for you.

Navigating Your First U.S. Tax Return?

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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