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Building a US credit history from scratch: a 12-month plan for Australians

Updated 2026-11-05 · 6 min read

Drawing for Building a US credit history: the ExpatCooee boomerang with the word CREDIT, a credit card, a padlock and a short ladder.
Building US credit: one card, one lock, one rung at a time.

Twenty years of paying your Aussie bills on time counts for almost nothing on day one in America. The good news: a US credit history builds quickly if you set it up right.

The short version

  • US lenders, landlords and phone companies check your file with the three US credit bureaus: Equifax, Experian and TransUnion [1]. Your Australian history isn't in it.
  • Get your Social Security number first. You can start work without it, but credit products generally ask for it [3].
  • Secured credit cards and credit-builder loans are designed for people new to credit [2].
  • Payment history and amounts owed make up about two-thirds of a FICO score [4].
  • You can check your US credit reports for free every week at AnnualCreditReport.com [1].

Why you start from zero

A credit score in the US is built from your US credit reports. Australia has its own bureaus and its own files, and they don't feed into the American system. So when you arrive on an E-3 and apply for a phone plan, a lease or a credit card, the lender looks you up and finds nothing. That's called being "credit invisible" or having a "thin file", and it's why new arrivals get knocked back for cards that any local graduate could get.

It also shows up in daily life. Some phone companies want a deposit, landlords want extra proof of income, and car loans are harder to get. Our renting in New York guide explains how to get approved for a flat while you build.

What goes into a US score

The most widely used score in US lending is FICO. Its maker breaks the score into five parts [4]:

Factor Share of a FICO score What it means for a new arrival
Payment history 35% Every on-time payment counts. One missed payment hurts a thin file badly
Amounts owed 30% Keep card balances low compared with your limit
Length of credit history 15% You can't fast-track this, so open your first account early
New credit 10% Lots of applications in a short time look risky
Credit mix 10% Cards plus an instalment loan helps, but don't borrow just for the mix

The Consumer Financial Protection Bureau, the US federal consumer finance regulator, adds some practical targets. Many experts suggest using less than 30% of your total limit, and people with the highest scores often use under 10% [2]. You don't need to carry a balance or pay interest to build a score; paying in full each month works [2].

Step one: get your numbers sorted

Social Security number

Most US lenders ask for an SSN. As a work-authorised newcomer, you start online at ssa.gov and finish at a Social Security office with original documents such as your passport and I-94 [3]. Verification with Homeland Security can take a few weeks if it needs a manual check [3]. Apply in your first week.

What about an ITIN?

An Individual Taxpayer Identification Number (ITIN) is a nine-digit IRS number for people who need a US tax ID but can't get an SSN [5]. If you're on an E-3 or another US work visa, you're eligible for an SSN, so you don't need an ITIN [5]. A non-working spouse might, but only if they have a federal tax reason, such as being claimed on a tax return [5]. An ITIN doesn't authorise work [5]. Some lenders accept an ITIN on credit applications, but not all, so ask before you apply.

Your 12-month credit plan

Here's the order that works for most Australians on a work visa.

  1. Month 0: open a US bank account. Pick a bank that also offers secured cards, because an existing relationship can make the next step easier. Pay your salary into it.
  2. Month 1: get a secured credit card. You put down a cash deposit, which usually sets your credit limit. You use it like a normal card, and the issuer reports your payments to the bureaus. The CFPB names secured cards as a starter product for people new to credit [2].
  3. Month 1: set up autopay for the full statement balance. This is the single most important step. Payment history is 35% of a FICO score [4], and autopay means you never miss.
  4. Months 1 to 6: use it lightly. Put one or two regular bills on the card, such as your phone or a streaming service. Keep the reported balance well under 30% of the limit, and closer to 10% if you can [2].
  5. Month 3: check all three reports. Go to AnnualCreditReport.com, the only authorised site for free reports, and check Equifax, Experian and TransUnion [1]. Dispute any errors.
  6. Month 6 or so: consider a second building block. A small credit-builder loan from a bank or credit union adds an instalment account to your mix [2]. Only take one if the fees are low and the repayment fits your budget.
  7. Months 6 to 12: ask about graduating. Many issuers review secured cards and may convert them to an unsecured card and return your deposit. Ask, rather than closing the account, because older accounts help your length of history [4].
  8. Month 12: apply for a regular card, carefully. By now you should have a score. Apply for one card that fits your spending, not three at once [2][4].

Shortcuts worth knowing about

International credit data

Some US companies now use credit information from overseas bureaus. Nova Credit, for example, is a US consumer reporting agency whose Credit Passport product uses data from international credit bureaus to help lenders approve qualified newcomers [6]. Its website doesn't list which countries it covers, so check whether Australian data is accepted for the product you're applying for before you rely on it [6].

Your existing Australian card issuer

If you hold a card with a bank or issuer that also operates in the US, ask whether they offer a US card to existing overseas customers. Programs and eligibility vary, and they change, so get the details in writing.

Becoming an authorised user

If your partner or a friend already has good US credit, they can add you as an authorised user on their card. Whether that shows up on your file depends on the issuer, and you take on the risk that their habits affect you. Use this with people you trust completely.

Mistakes that set you back

  • Applying for everything in week one. Each application can add a hard enquiry, and a cluster of them on a blank file looks risky [2][4].
  • Maxing out the card. Even if you pay it off, a high reported balance can drag your score down [2].
  • Missing a payment while travelling home. Set up autopay before your first trip back for Christmas.
  • Closing your first card. It's your oldest account. Keep it open with a small regular charge [4].
  • Ignoring your reports. Check them regularly; they're free every week [1].
  • Forgetting about your Australian credit. Keep at least one Australian card or account active if you plan to go home or borrow in Australia later. Our guide to keeping your Australian bank, number and accounts covers this.

Planning to buy back home?

A US score won't help an Australian lender, and an Australian lender will look at your foreign income in its own way. If you're thinking about property in Australia while you live in New York, read home loans for Australians abroad before you assume your US pay cheque will count the same.

Questions about which bank or card worked for other Aussies? Ask in Cooee USA, our Facebook group for Australians in the USA. Members share what got them approved, and what didn't.

Sources

  1. Free credit reports – Federal Trade Commission
  2. How do I get and keep a good credit score? – Consumer Financial Protection Bureau
  3. Social Security numbers for noncitizens – Social Security Administration
  4. What's in my FICO Scores? – myFICO
  5. Individual Taxpayer Identification Number (ITIN) – Internal Revenue Service
  6. Nova Credit

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