What My First Encounter with the U.S. Tax System Taught Me About the Real Start of Settling In



The First Spring After Getting My Green Card, When Everything Changed
The excitement of the day I held my green card in my hands didn't last long.
The following spring, when my first tax filing season arrived, the reality hit me: "Now I really have to live like an American."
Until then, my company had handled my taxes for me, but now, as a U.S. tax resident,
I had the responsibility of reporting my worldwide income myself.



■ "The United States Also Knows About Your Korean Bank Accounts."

This was the most shocking thing I heard.
If foreign assets in Korea — savings accounts, stock accounts, rental income, and more — exceeded a certain amount, they had to be reported to the U.S. Internal Revenue Service (IRS). 'I already paid taxes in Korea, so why do I have to report again?' This simple question is the very first trap that most new green card holders run into.

The United States treats both citizens and green card holders as subject to worldwide taxation. Taxes already paid in Korea can be partially offset through the Foreign Tax Credit, but failing to file at all is classified as a tax law violation regardless of intent. That's when I finally understood: a green card is not just permission to stay, but the starting point of a tax relationship.



■ Receipts, Account Statements, and Endless Forms

Ahead of my first tax filing, my accountant asked for three things.

- U.S. pay statements (W-2 or 1099)
- Korean financial account statements
- Proof of taxes paid in Korea

The problem was that most new immigrants had not kept these three things systematically organized. Korean banks take time to issue English-language balance certificates, and local employers sometimes send tax forms by email. In the end, the differences between the systems of the two countries were the biggest obstacle in the preparation process.



■ "Can't I Just Leave It As Is?"

If the balance of a foreign financial account exceeds $10,000 even once during the year, it becomes subject to FinCEN Form 114 (FBAR) reporting.
At first, I thought it was just a simple financial report, but learning that the penalty for failing to file could be up to 50% of the account balance changed how seriously I took it.
My accountant said, "This isn't a tax — it's a reporting obligation. Not filing it doesn't immediately increase your taxes, but a single omission can work against you when you apply for citizenship in the future."
From that day on, I organized all my accounts, and instead of closing my Korean bank accounts, I converted them into 'accounts for U.S. residents.'



■ "If You're Married, It's More Advantageous to File Jointly."

Under U.S. tax law, it is common for married couples to file taxes as 'Married Filing Jointly.'​
However, if a spouse is not yet a green card holder or lives abroad, they must separately obtain an ITIN (Individual Taxpayer Identification Number).
This process was more complicated than expected, and delays in the paperwork pushed my tax refund back by several months.
That's when I realized that the U.S. tax system is not simply about paying money — it is a process by which your family unit gets registered in the system.



■ The Day I Received My First Refund, I Felt Like a Real Member of Society

A few weeks after submitting all my documents, a small refund was deposited by the IRS via direct deposit. The amount wasn't large, but the moment was symbolic. I felt that I had fulfilled my tax obligations as a green card holder and had been recognized as a member of the system. I learned that although the U.S. system is complex, it protects those who report honestly and keep their records.​



■ "Immigration Is Not About a Visa, but About Adapting to the System."

What I realized after finishing my first tax filing is simple.
Obtaining a green card is only the first step toward joining American society; real immigration begins after that.
Banking, taxes, health insurance, credit scores, address changes — the entire administrative system is connected around tax filing.
When your status changes, your taxes change, and when your taxes change, your life changes.



■ Your First Tax Filing Is 'an Interpretation of Your Records'

A green card holder's first tax filing is not simply an accounting procedure — it is the official starting point of your status history in the United States.​

- Organizing your foreign assets
- Adjusting your spouse's tax status
- Correctly distinguishing between deductions and reporting items,
these three things minimize financial risk after immigrating.

The U.S. tax system is complex, but it operates on clear principles. Not knowing it leads to disadvantages, but knowing it protects you accordingly.
Therefore, even if you leave your first tax filing to an accountant, you need to develop the habit of personally understanding and checking every item written on the return.



■ My First Step Not as a 'Green Card Holder' but as a 'Taxpayer'

That spring, after finishing my first tax filing, I finally felt that I had become not just a green card holder, but a taxpayer and member of American society.​
The process was cumbersome and unfamiliar, but through it I learned about the transparency and trustworthiness of the U.S. system. The real beginning of immigration was not arriving at the airport, but the moment my name was registered with the IRS.