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How the US Credit Score System Works From Scratch

A strong US credit score can make it easier to rent a home, finance a car, obtain a credit card and qualify for competitive lending terms. For newcomers, however, income

Written by: D4U Immigration

A strong US credit score can make it easier to rent a home, finance a car, obtain a credit card and qualify for competitive lending terms. For newcomers, however, income earned in Brazil and a strong Brazilian credit history generally do not create an American score automatically.

How the US credit score works

A credit score is calculated from information reported to the American credit bureaus. FICO and VantageScore are two common scoring models, although lenders may use different versions depending on the financial product.

FICO scores generally range from 300 to 850. The calculation commonly considers payment history, amounts owed, length of credit history, new accounts and the mix of credit products.

FICO factorApproximate weighting
Payment history35%
Amounts owed30%
Length of credit history15%
New credit10%
Credit mix10%

These percentages are general guidelines. The actual impact of each factor depends on the information contained in the individual credit report.

When does a first credit score appear?

Opening an account does not necessarily produce a FICO score immediately. A FICO score generally requires at least one account that has been open for six months and at least one account reported to a credit bureau within the previous six months.

Some scoring models may generate a score sooner, but lenders do not all use the same model. For that reason, newcomers should not rely on promises that a specific score will appear within 30 or 45 days.

Building a reliable credit history takes consistent behavior rather than a single application or deposit.

How to start building credit

A secured credit card can be an accessible starting point. The cardholder provides a refundable security deposit, which usually determines the initial credit limit.

Before applying, confirm that the issuer reports activity to the major credit bureaus. Use the card for manageable expenses, keep the reported balance low and pay the statement in full by the due date.

An authorized-user account may also help in some situations, but the result depends on whether the issuer reports authorized users and whether the primary account is managed responsibly.

Newcomers should avoid opening several accounts at once. Multiple applications can create hard inquiries and make the profile appear riskier to potential lenders.

Does an ITIN create a credit score?

An Individual Taxpayer Identification Number does not create a credit score by itself. It is a tax-processing number issued to eligible individuals who cannot obtain a Social Security Number.

Some financial institutions accept an ITIN when evaluating an application. Credit bureaus may match reported information using a combination of name, address, date of birth and identification data.

A person should not apply for an ITIN solely to build credit. Eligibility depends on federal tax rules and a valid tax-related purpose.

After receiving an SSN, update creditors with the new number and review the credit reports for accuracy. Records are not always linked automatically, so inconsistencies should be disputed directly with the relevant bureau.

Credit habits that make a difference

Payment history is one of the most influential factors. Even one late payment can remain on a credit report for years and affect future applications.

Lower credit utilization is generally better than repeatedly approaching the card limit. There is no universal percentage that guarantees a particular score, but keeping balances manageable reduces financial risk.

Carrying a balance and paying interest does not improve a score more than paying the statement in full. Likewise, taking out an unnecessary loan solely to create a credit mix can cost more than any potential benefit.

Closing an old account can change available credit and utilization. However, a positive closed account may remain on a credit report for years, so closing it does not automatically erase the entire history.

Common mistakes made by newcomers

The first mistake is applying for several credit cards immediately after arrival. A gradual approach usually creates a more stable profile.

The second is confusing the statement closing date with the payment due date. Paying on time prevents delinquency, while understanding the reporting date helps manage the balance shown on the credit report.

The third is trusting services that promise a score above 720 or 750 within a fixed period. No company can guarantee a specific credit score timeline because every file and scoring model is different.

The fourth is failing to review credit reports for incorrect names, addresses or accounts. Monitoring the reports makes it easier to identify errors and possible identity theft.

Checklist for building credit from scratch

  1. Open a bank account with a reputable institution.
  2. Apply for one suitable credit product.
  3. Confirm that the account reports to credit bureaus.
  4. Keep spending within a manageable limit.
  5. Pay every bill by the due date.
  6. Avoid unnecessary credit applications.
  7. Review credit reports and dispute inaccuracies.

How D4U supports your international planning

D4U Immigration is an international planning company that helps clients structure the administrative, documentary and financial stages of their relocation to the United States.

The planning considers how immigration timing can affect practical decisions such as housing, banking and documentation. D4U’s processes are developed with guidance from Warren Janssen, former USCIS director.

More than 91% of clients who follow the complete planning process achieve a successful outcome. Clients also receive six months of Doctor24 access and the D4U guarantee: your journey completed, or your money back, under the terms of the contracted service.

Frequently asked questions

Can my Brazilian credit score be transferred to the United States?

Usually not. American lenders generally rely on information reported to US credit bureaus, although some institutions may consider alternative international records.

How long does it take to receive a FICO score?

A FICO score generally requires at least one account open for six months and recent reporting activity. Other scoring models may generate a score sooner.

Do I need an SSN to obtain a credit card?

Not in every case. Some issuers accept an ITIN or alternative documentation, but their requirements vary.

Does carrying a balance improve my credit score?

No. Paying interest is not necessary to build credit. Paying the statement in full and on time is generally the safer strategy.

Does immigration status affect the score itself?

Immigration status is not a credit-score factor, but lenders may consider residency, income, documentation and repayment ability during underwriting.

Talk to the D4U team and start your international journey.

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