Moving to the U.S.? Your Complete First-Year Tax Guide for New Residents

If you are moving to the United States, understanding your U.S. tax obligations from the start is one of the most important steps you can take to avoid penalties and surprises.

Understanding how moving to the USA affects your taxes in the first year helps you avoid penalties, double taxation, and last‑minute surprises when you file your return.

If you want to know more about first-year US tax return rules, new US resident taxes, and green card holder taxes, this guide explains them in simple language. 

Understanding Your First Year in the U.S. Tax System

In the year you arrive, you may be classified as a nonresident, a resident, or a dual-status taxpayer. Your category depends on how long you stay in the U.S. and what type of visa you have.

Your tax status in that first calendar year drives everything—what income is taxable, which forms you file, and whether you can claim key deductions and credits.

What Is a Dual-Status Return in the Year of Arrival?

When you first arrive, you may be considered both a nonresident and a resident during different parts of the same year. This is called dual status.

When Dual-Status Applies

• Started the year as a nonresident alien and later became a resident alien.
• Became a green card holder during the year.
• Changed immigration or tax status mid-year in certain cases.

How Dual-Status Affects Your Tax Return

• Nonresident periods are generally taxed only on U.S.-source income.
• Resident periods are taxed on worldwide income.
• Dual-status taxpayers usually cannot file jointly with a spouse.
• Cannot take the standard deduction in most cases.
• May face more complex reporting requirements.

Forms for Dual-Status Returns

• Typically involves Form 1040 for the resident period and Form 1040-NR as a dual-status statement for the nonresident portion.
• Special statements or attachments are often required.

How Is the U.S. Tax Residency Status Determined?

To understand U.S. tax rules for moving to the USA, you must know when you become a U.S. tax resident. The IRS uses two main rules: the Green Card Test and the Substantial Presence Test.

Green Card Test

• You are a U.S. tax resident for any year in which you are a lawful permanent resident at any time, meaning you hold a green card. 
• Green card holder taxes apply even if you live abroad for part of the year.

Substantial Presence Test

You may become a resident alien if you are physically present in the U.S. for:

1. At least 31 days in the current year
2. 183 days over 3 years, counting:
   • All days in the current year
   • One-third of the days in the previous year
   • One-sixth of the days in the year before that

Many people who move to the U.S. are unaware that they may qualify as tax residents under the Substantial Presence Test without realizing it.

Why Residency Status Matters

• Resident aliens file Form 1040 and report worldwide income.
• Nonresident aliens file Form 1040-NR to report only U.S.-source income — this is the primary tax form for foreign nationals who have not yet established U.S. tax residency. 
• Properly classifying your status is essential for a compliant first-year US tax return.

New U.S. residents from countries that have tax treaties with the U.S. may also be able to use treaty tiebreaker rules to clarify their residency status and reduce double taxation. 

Reporting Foreign Assets and Bank Accounts Immediately

For many people, the biggest shock when moving to the USA is the requirement to report foreign accounts and assets, not just U.S. ones.

FBAR (FinCEN Form 114) – Foreign Bank Account Reporting

• You must file an FBAR if the total value of your foreign financial accounts exceeds $10,000 at any time during the year.
• Reportable accounts can include foreign bank accounts, investment accounts, and certain online financial accounts held outside the U.S.
• FBAR is filed electronically with the Financial Crimes Enforcement Network (FinCEN), separate from your tax return.

FATCA (Form 8938) – Statement of Specified Foreign Financial Assets

• Form 8938 may be required if the value of your foreign financial assets exceeds certain thresholds.
• This form is filed with your Form 1040 and may include foreign assets, such as accounts, certain foreign stocks, and interests in foreign entities.

Why You Should Report Early

• Penalties for failing to report foreign accounts can be very high.
• Getting this right in your first-year US tax return sets a clean baseline for future years.

SSN or ITIN: How New U.S. Residents Should Apply

You cannot fully navigate new U.S. resident tax requirements without a U.S. tax identification number. This is either a Social Security Number (SSN) or an Individual Taxpayer Identification Number (ITIN).

Social Security Number (SSN)

• Eligible individuals should apply for an SSN as soon as possible after arrival.
• An SSN is used for employment, taxes, banking, and many other aspects of life in the U.S.

Individual Taxpayer Identification Number (ITIN)

• An ITIN is for individuals who are not eligible for an SSN but still need to file a U.S. tax return.
• You apply using Form W-7, often submitted with your first tax return.

Why Is a Tax ID Essential?

• You need an SSN or ITIN to file your first-year US tax return, claim treaty benefits, or receive a refund.
• A valid tax ID is also required for many financial institutions and payroll systems.

Deadlines and Forms for Your First U.S. Tax Return

Getting the timing right is just as important as understanding the rules when it comes to moving to the USA and filing taxes in your first year.

Federal Deadlines

• The standard due date for individual U.S. tax returns is April 15.
• New residents can file Form 4868 to request an automatic extension of time to file until about mid-October, though taxes owed are still due by the original deadline.

Core Forms for New U.S. Residents

• Form 1040 – For residents and green card holder tax filers reporting worldwide income.
• Form 1040-NR – For nonresident aliens reporting U.S.-source income.
• Form 8938 – To report specified foreign financial assets under FATCA rules.
• FinCEN Form 114 (FBAR) – To report foreign financial accounts.
• Form W-7 – To obtain an ITIN if you cannot get an SSN.

State Taxes for New Residents

• Many U.S. states also have their own tax returns, with separate residency rules and deadlines.
• If you live or work in a state with income tax, you may need to file a separate state tax return. Each state has its own residency rules, deadlines, and tax rates — consulting a tax professional familiar with your specific state can help avoid errors.

When you feel confused about the tax guidelines for moving to the USA, you may contact an international tax professional specializing in foreign national and new U.S. resident taxation.

Get Ready for Your First Year of U.S. Taxes

Your first year in the U.S. is a big transition, and your first-year U.S. tax return is a key part of building your financial life here.

Understanding dual-status rules, residency tests, foreign asset reporting, tax ID applications, and filing deadlines puts you in a much stronger position as a new US resident or green card holder.

Working with an international tax professional experienced in new U.S. resident taxation ensures your first-year return is filed correctly, all foreign accounts are properly reported, and you take full advantage of any available treaty benefits.