One of the most persistent financial myths in immigrant communities is that you cannot build a credit score or obtain a credit card without a Social Security Number (SSN). In reality, the U.S. credit reporting ecosystem is designed around individual financial activity, not immigration status. An Individual Taxpayer Identification Number (ITIN) issued by the Internal Revenue Service (IRS) is fully capable of anchoring your credit history across the three major credit bureaus: Experian, Equifax, and TransUnion.
This comprehensive guide breaks down the legal and technical differences between an SSN and an ITIN, reveals which major credit card issuers and banks accept ITIN applications, and explains how to merge your ITIN credit history into an SSN once you receive work authorization.
What is the Core Difference Between an SSN and an ITIN?
While both numbers are 9-digit identifiers formatted as XXX-XX-XXXX, they are issued by different government agencies for distinct legal purposes:
| Feature | Social Security Number (SSN) | Individual Taxpayer Identification Number (ITIN) |
|---|---|---|
| Issuing Agency | Social Security Administration (SSA) | Internal Revenue Service (IRS) |
| Eligibility | U.S. Citizens, Lawful Permanent Residents (Green Card), and visa holders with explicit work authorization (H-1B, L-1, OPT, DACA). | Foreign nationals, non-resident aliens, dependents, and individuals who are required to file a U.S. tax return but ineligible for an SSN. |
| Starting Digit | Starts with digits 0 through 8 (excluding 9). | Always starts with the digit 9 and has a 7 or 8 in the fourth digit (e.g., 9XX-7X-XXXX). |
| Credit Bureau Support | Universally supported by Experian, Equifax, and TransUnion. | Fully supported by Experian, Equifax, and TransUnion when reported by participating banks. |
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Major U.S. Banks and Card Issuers That Accept ITIN Applications
Not all financial institutions accept ITINs for online applications, but several of the largest national issuers have well-established ITIN application pathways:
| Bank / Issuer | Application Method | Starter Products Available | Special Notes |
|---|---|---|---|
| Capital One | Online & Phone | Platinum Secured, Quicksilver Secured | Full online application support; enters ITIN directly in the SSN/ITIN field. |
| Discover | Phone / Mail Verification | Discover it® Secured | Requires submitting IRS ITIN assignment letter Form CP565 via secure document upload. |
| Chase Bank | In-Branch Appointment | Freedom Rise, Freedom Unlimited | Must visit a physical retail branch with an unexpired foreign passport and ITIN letter. |
| Bank of America | In-Branch Appointment | Customized Cash Rewards Secured | Requires in-person identification with passport and proof of physical U.S. residential address. |
| Citibank | Phone & In-Branch | Citi Secured Mastercard | Accepts ITIN with secondary photo ID and proof of income. |
Step-by-Step: How to Apply for an ITIN via IRS Form W-7
If you do not yet have an ITIN, you can apply for one directly through the IRS using Form W-7. Follow these four steps:
- Complete IRS Form W-7: Fill out the Application for IRS Individual Taxpayer Identification Number, indicating your tax filing status.
- Attach Your Federal Income Tax Return: The IRS generally only issues an ITIN when you file a valid federal income tax return (Form 1040 or 1040-NR), unless you qualify for an exceptional category (such as receiving passive investment income or claiming tax treaty benefits).
- Provide Certified Proof of Identity: You must submit original identity documents or certified copies from the issuing agency. A valid, unexpired foreign passport is the only standalone document that satisfies both identity and foreign status requirements.
- Use a Certified Acceptance Agent (CAA): To avoid mailing your original passport to the IRS, schedule an appointment with an IRS-authorized Certified Acceptance Agent (available at many accounting firms, community non-profits, and university international student offices). CAAs verify your passport in person and return it to you immediately.
How to Transfer and Merge Your ITIN Credit History to an SSN
When you eventually receive work authorization or lawful permanent residency and obtain an SSN, your ITIN will be formally retired by the IRS. However, you do not have to start your credit history over from scratch. Follow this procedure to merge your credit history:
- Notify All Current Card Issuers: Call the customer service number on the back of each credit card and provide your new SSN. Issuers will update their core banking systems to broadcast future monthly updates under your SSN.
- Send a File Merge Request to Experian, Equifax, and TransUnion: Write a formal letter to each of the three bureaus including: (1) a copy of your IRS ITIN letter Form CP565, (2) a copy of your new Social Security Card, (3) a copy of your driver’s license or passport, and (4) a recent utility bill. Request that all tradelines previously reported under your ITIN be merged under your new SSN.
Frequently Asked Questions (FAQ)
Does having an ITIN affect my immigration status?
No. Applying for or holding an ITIN is strictly a tax compliance mechanism. Under Section 6103 of the Internal Revenue Code, the IRS is prohibited by federal law from sharing taxpayer information with immigration enforcement authorities, except in cases involving criminal investigations or national security warrants.
Can I get an auto loan or home mortgage with an ITIN?
Yes. Specialized lenders and regional credit unions offer dedicated ITIN auto loans and ITIN mortgage programs (often requiring a 10% to 20% down payment and 2 years of consistent tax returns). Building a 700+ credit score with your ITIN secured cards significantly lowers the interest rate on these major financing products.