In Brazil, you know Serasa. In the US, the system is different — and understanding it is one of the most valuable financial skills an immigrant can build. Your credit score here affects your mortgage rate, your car payment, your insurance, even some job applications.
The frustrating part: your Brazilian credit history doesn't transfer. Everyone starts from zero. The good part: starting from zero is a solvable problem with a known timeline. Here's the playbook.
How the US System Works
Three private companies — Equifax, Experian, and TransUnion — track how you handle borrowed money. From that history, a FICO score between 300 and 850 is calculated. For mortgages: 580+ opens FHA loans, 620+ opens conventional loans, and 740+ gets you excellent rates.
The score comes from five ingredients:
| Factor | Weight | What It Means |
|---|---|---|
| Payment history | 35% | Do you pay on time? One 30-day late payment does real damage. |
| Utilization | 30% | How much of your credit limits you're using. Keep it under 30% — under 10% is best. |
| Age of credit | 15% | Older accounts help. Never close your first card. |
| Credit mix | 10% | Cards + an installment loan (car, credit builder) is stronger than cards alone. |
| New inquiries | 10% | Opening many accounts quickly looks risky. |
Starting from Zero: The First 90 Days
- Open a secured credit card. You deposit $200–$500 as collateral, and the card reports to all three bureaus like any other card. Most banks and credit unions offer them — no credit history required.
- Use it lightly and pay it in full. One small recurring charge (your phone bill) and automatic full payment every month is the perfect pattern.
- Consider a credit-builder loan. Offered by credit unions: you "borrow" a small amount held in savings, pay it monthly, and the payments build your file.
- Become an authorized user. A spouse or relative with a good, old, low-balance card can add you — their history helps your file.
- Report your rent. Services exist that report your rent payments to the bureaus — turning the payment you already make into credit history.
The Habits That Move Your Score
- Never miss a due date. Set every account to autopay at least the minimum. Payment history is 35% of your score and mistakes stay on your report for years.
- Keep balances low — even if you pay in full, a high balance on your statement date raises your reported utilization. Paying before the statement closes is a quiet trick that works fast.
- Ask for limit increases after 6–12 months — a higher limit lowers your utilization automatically.
- Check your reports free at AnnualCreditReport.com and dispute anything that isn't yours. Errors are common; fixing them is free.
What About Buying a Home Before Your Credit Is Built?
Here's what many people don't realize: you may not have to wait.
- ITIN loans accept alternative credit — 12 months of on-time rent, utilities, phone, and insurance payments can stand in for a credit score.
- Foreign National loans accept international credit references.
- And if you're 30–60 days of good behavior away from a better score band, a rapid rescore through our team can update your score in days instead of waiting for the monthly cycle.
The Payoff
Every 20-point band you climb makes your future mortgage cheaper — the difference between a 679 and a 740 score can be thousands of dollars over the life of a loan. Credit isn't a mystery; it's a routine. Start the routine now, and when you're ready to buy, the system will be working for you instead of against you.
Frequently Asked Questions
How long does it take to build usable credit from zero?
Usually 6–12 months with a secured card and 100% on-time payments — enough to generate a score lenders can work with.
Does paying rent build my credit?
Not automatically, but rent-reporting services can add it to your file — and on ITIN and alternative-credit programs, a 12-month on-time rent history counts directly.
Does checking my own credit lower my score?
No — self-checks are soft inquiries. And multiple mortgage inquiries within the shopping window count as roughly one.
Prepared by the Alvorada Mortgage, LLC team — a mortgage broker licensed in Georgia (#2137907) and Florida (#MBR5158). NMLS #2137907. Educational content; not a commitment to lend.