Where does a US credit file start?
Usually from zero: Experian says credit histories don’t follow you when you move to the US. One exception: some US lenders use Nova Credit’s Credit Passport, which Nova says translates an international credit report into a local-equivalent score. Chase’s page says you can use UK and Canada credit history this way for its Freedom Unlimited or Freedom Flex (read October 17, 2026).
Otherwise, your US file starts when a lender reports an account in your name to the credit bureaus (CFPB). You’re not alone: the CFPB estimates that about 7 million US adults had no credit file in December 2020, and about 25 million more had one too thin or too old to score. (Never had a score? About 7 Million US Adults Are Credit Invisible.)
Do I need a Social Security number to start?
Not always. Some lenders accept an ITIN instead. Capital One’s ITIN page (April 30, 2026) lists seven of its cards you may be able to get with an ITIN, and some credit unions accept an ITIN. Each issuer decides which of its cards are available to ITIN applicants.
Which number you use depends on IRS rules. The IRS issues an ITIN, a 9-digit number, if you need a US taxpayer identification number for federal tax purposes but aren’t eligible for an SSN. You apply with Form W-7, normally together with your federal tax return (IRS: ITIN, updated October 28, 2025). If you have an SSN, are eligible for one or have an SSN application pending, the IRS says not to file Form W-7 (IRS instructions for Form W-7, revised December 2024). Starting From Zero covers how to apply and how long the IRS says it takes.
Since mid-2026, federal guidance lets banks and credit unions treat an ITIN used instead of an SSN as a reason for extra checks (Executive Order 14406, May 19, 2026; FinCEN advisory FIN-2026-A002, issued with the FDIC, OCC and NCUA, June 5, 2026). Expect more questions when you apply.
If you later get an SSN, ask each card issuer what it needs to update your account. For a loan, ask the lender. For taxes, the IRS says to stop using your ITIN, use your SSN and tell the IRS, which combines your tax records under the SSN.
What does a first account look like in real numbers?
A secured card is a common first account. You put down a refundable deposit, and in most cases your limit equals it: a $200 deposit usually gets you a $200 limit, Experian says. Some cards ask less. For its Platinum Secured card, Capital One lists a $49, $99 or $200 deposit for a starting line of at least $200, a $0 annual fee, and reporting to the three major credit bureaus (read October 17, 2026).
Example: Amir opens a secured card with a $200 limit on May 4.
- His $15 phone bill goes on the card each month. That’s 7.5% of the limit ($15 ÷ $200); the target we teach is under 10% on each card and overall. A $50 month would be 25%.
- Issuers generally report to the bureaus once a month, often shortly after the billing cycle ends. So the bureaus may see his statement balance even if he pays it in full later (Experian). Paying before the statement closes might help lower the balance the bureaus see, Experian says.
- He autopays the full statement balance. If your account can’t always cover that, autopay at least the minimum as a safety net and pay the rest by the due date. FICO calls payment history the most influential factor in its scores, and a payment 30 or more days late can be reported and stay on a report for seven years (Experian).
- On November 4 the card turns six months old. From that day his file can meet FICO’s minimum: an account open six months or more and one reported in the past six months. Equifax says VantageScore 4.0 can generate a score with as little as one month of credit history. Neither rule says what his score will be.
Some issuers may later move you to a regular card and refund your deposit. Capital One’s upgrade page (February 26, 2026) says there isn’t a set timeline, so ask your issuer how its review works. (Your Credit Timeline separates the dates rules set from the ones no one can promise.)
What else can help, and what does each one cost?
- Becoming an authorized user. A relative or trusted friend adds you to their card, and the account can appear on your report. myFICO says its late payments or high balance can hurt your score too, you aren’t legally responsible for the debt, and in recent FICO versions authorized-user accounts have less impact than an account in your own name. Issuers don’t have to report authorized users (Capital One), so ask first.
- A credit-builder loan. The lender holds the money while you repay it in small payments, usually over 6 to 24 months, and you get it at the end (CFPB). In a CFPB-funded study, it worked better for people with no existing debt. With only an ITIN, ask a credit union that accepts one whether it offers this loan.
- Companies’ own terms, as their websites said in October 2026. Self requires a Social Security number. CreditStrong’s own pages disagree: its FAQ accepts "a valid social security number or individual taxpayer identification number," while its account disclosure asks for "a valid social security number"; both list other conditions too, so get written confirmation before you apply. Kikoff says its plan "is not a credit builder loan": you pay a monthly plan fee (from $5) that comes with a credit line you can’t spend outside Kikoff, you don’t get that money back at the end, and the 12-month plan renews automatically unless you turn renewal off. RentReporters charges a one-time $94.95 setup fee plus $10.95 a month (or $105 a year), reports to all three bureaus, and can add up to two years of past rent from your current lease.
- Experian Boost. It’s free and adds bills you pay from a linked bank account or card, such as phone, utilities, insurance, streaming and some online rent payments, to your Experian credit file. Experian says it can help if you meet FICO’s minimum requirements, that some people’s scores stay the same or go down, and that not all lenders use scores that Experian Boost affects.
(A secured card and a credit-builder loan side by side: Building Credit as a Newcomer to the US.)
Where do people go wrong?
- Buying a "credit privacy number" (CPN). Federal prosecutors call CPNs "actually stolen Social Security Numbers" (SSA Inspector General, 2018). Apply with a number other than your own, the FTC says, and you won’t get the credit; you could face fines or prison.
- Paying someone to "clean up" your credit. Your credit reports are free every week at AnnualCreditReport.com, and disputing an error with the bureau and the company that reported it is free too (FTC); the CFPB says "You generally cannot have negative information removed from your credit report if it is accurate." Treat a pitch to "add 100 points to your score overnight" as a red flag.
- High-fee cards. In a 2015 case, the CFPB described cards with a $300 limit and a $75 upfront fee, a quarter of the line on day one. Read the card's pricing table first, and look for a $0 annual fee and no monthly fee.
What can I do today?
- If you have an SSN or an ITIN: ask one bank or credit union: Does its secured card or credit-builder loan report to all three bureaus? Does it accept your number? How much money goes in, and when is it returned?
- If you have neither: read "Who needs an ITIN" on the IRS ITIN page. If you need one, some VITA sites help you apply for free (IRS page updated July 22, 2026). If you don’t, the checker below lists other ways to start.
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