Why You Need an ITIN: 10 Key Benefits Explained

An Individual Taxpayer Identification Number (ITIN) is a nine-digit tax processing number issued by the IRS to individuals who are not eligible for a Social Security Number. If you are a non-US resident, a foreign national doing business in the United States, or a resident alien without SSN eligibility, an ITIN may be one of the most valuable documents you can obtain. It is not just a tax number — it is a key that unlocks significant parts of the US financial system.

What Is an ITIN?

An ITIN always begins with the number 9 and follows the format 9XX-XX-XXXX. It is issued by the IRS specifically for federal tax purposes. It does not authorize work in the United States, does not provide eligibility for Social Security benefits, and does not change your immigration status. What it does is allow you to meet your US tax obligations and, importantly, access financial services that require a US tax identification number.

1. Open a US Bank Account

This is perhaps the single most common reason non-residents apply for an ITIN. Major US banks including Bank of America, Chase, Wells Fargo, and Citibank accept ITINs in lieu of Social Security Numbers when opening personal or business checking and savings accounts.

Having a US bank account allows you to receive wire transfers in USD, pay US vendors and contractors, hold funds in a stable currency, and access US-based payment platforms that require a domestic bank account. For freelancers, remote workers, and international business owners, a US bank account is often essential.

2. File US Tax Returns

If you earn income from US sources — rental income, investment dividends, freelance contracts with US clients, royalties, or business revenue — you may have a legal obligation to file a US tax return. An ITIN is required to do so. Filing taxes also creates an official record of your US financial activity, which can support future visa applications and other administrative processes.

Even if you are not legally required to file, voluntarily filing can sometimes result in refunds if withholding taxes were applied to your income at source.

3. Build a US Credit History

This is one of the most powerful long-term benefits of having an ITIN. Many financial institutions will open a secured credit card account using your ITIN. Once you begin using that card and paying on time, you start building a credit file with the three major US bureaus — Experian, Equifax, and TransUnion.

Over time, a strong US credit score opens access to unsecured credit cards, personal loans, auto financing, and eventually mortgages. For anyone planning to build a life, business, or investment portfolio in the United States, this credit history is invaluable.

4. Buy or Rent US Real Estate

Landlords and property managers frequently require a tax identification number during the rental application process. An ITIN satisfies this requirement. For buyers, an ITIN enables you to be included on a mortgage application and, in many cases, qualifies you for ITIN mortgage loans specifically structured for non-SSN borrowers.

Additionally, foreign nationals who own US real estate and earn rental income are required by law to report that income to the IRS. An ITIN is the mechanism through which you comply with those reporting requirements.

5. Invest in US Markets

Brokerage accounts at firms including Interactive Brokers, TD Ameritrade, and several others can be opened using an ITIN. This gives you legal, regulated access to US stock markets, exchange-traded funds (ETFs), bonds, and other financial instruments.

For investors outside the US, access to US markets through a properly structured account also has tax advantages depending on your home country's treaty with the United States.

6. Obtain an EIN for Your US LLC

If you form a US Limited Liability Company as a non-resident — a very common structure for e-commerce businesses, consulting firms, and Amazon sellers — you will need to obtain an Employer Identification Number (EIN) from the IRS. While you can sometimes apply for an EIN by phone, having an ITIN simplifies the process considerably and is often a prerequisite for online EIN applications by foreign nationals.

7. Accept Payments as a Business

Payment processors including Stripe, PayPal, and Amazon Payments require a US tax identification number to verify business identity and fulfill their IRS reporting obligations. An ITIN, especially when paired with a US LLC and EIN, allows your business to accept payments from customers in the US and internationally without the complications that often arise from purely foreign-based payment infrastructure.

8. Claim Dependents and Tax Credits

If you file a US tax return and have qualifying dependents, an ITIN allows both you and your dependents to appear on your return with proper identification numbers. This enables you to potentially claim the Child Tax Credit and other dependent-related deductions where eligible. Each dependent must also have their own ITIN.

9. Access ITIN Mortgage Programs

A number of lenders in the United States offer mortgage products specifically designed for borrowers who hold ITINs rather than Social Security Numbers. These ITIN mortgage programs typically require a larger down payment and a demonstrated credit history, but they make homeownership in the United States a genuine possibility for non-resident individuals.

Requirements vary by lender, but typically include two years of ITIN tax return filing history, a credit score established through ITIN-linked accounts, and a down payment of 15 to 30 percent.

10. Benefit from US Tax Treaties

The United States has income tax treaties with over 60 countries. These treaties often reduce the withholding tax rate on investment income, dividends, royalties, and other payments made to foreign nationals. To claim the benefits of a tax treaty on your US income, you must have a valid ITIN and file the appropriate IRS forms. Without an ITIN, the default withholding rate of 30 percent often applies to all US-source income.

Who Qualifies for an ITIN?

The IRS issues ITINs to individuals who have a federal tax filing requirement or other need and are not eligible for a Social Security Number. This includes:

• Non-resident aliens required to file a US tax return
• Resident aliens who are required to file based on the number of days present in the US
• Dependents or spouses of US citizens or resident aliens
• Dependents or spouses of non-resident alien visa holders
• Non-resident aliens claiming a tax treaty benefit
• Students, professors, or researchers filing US tax returns

If you are unsure whether you qualify, our team reviews your situation before you apply. We process ITIN applications for individuals in over 60 countries and handle the entire preparation and submission process through IRS Certified Acceptance Agents — which means no mailing your original passport.