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How to use credit cards to build FICO score from age 18 in the US

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Building a strong credit history is one of the most valuable steps young adults can take to secure their financial future. At 18, many people are new to the world of finance, and while the idea of managing a credit card can feel intimidating, it is also the fastest and most effective way to start building a FICO score.

Establishing good credit early has long-term benefits, including easier approval for apartments, lower interest rates on loans, and even better job opportunities in industries where creditworthiness is reviewed. By understanding the mechanics of FICO scoring and practicing disciplined card usage from the beginning, an 18-year-old can lay the groundwork for a lifetime of strong financial health.

Starting with the basics of FICO scoring

The FICO score, which ranges from 300 to 850, is the standard credit scoring model used by lenders in the United States. It is based on several categories, including payment history, amounts owed, length of credit history, new credit, and types of credit used.

For young adults, another key factor is the length of credit history. The earlier you open a credit card account, the longer your credit history will become over time, which positively influences your FICO score. Starting at 18 ensures that by the time major financial milestones arise, such as buying a car or applying for a mortgage, you already have several years of positive credit history behind you.

Choosing the right first credit card

Selecting the right credit card at 18 requires careful thought. Since most lenders may hesitate to approve someone with no credit history, a secured credit card can be an ideal starting point. This type of card requires a cash deposit that serves as collateral, making approval easier and giving the user the chance to build a track record.

Another option is to apply for a student credit card if enrolled in college. These cards are designed for beginners and often come with educational tools, lower fees, and basic rewards programs. Being strategic about the first credit card ensures that it becomes a steppingstone rather than a financial burden.

Practicing disciplined spending habits

Having access to credit does not mean spending freely. The best practice is to use a credit card as if it were a debit card, charging only what can be paid in full each month. Carrying balances not only results in high interest charges but also negatively affects the utilization ratio, another key factor in FICO scoring.

Learning financial discipline early also helps avoid the trap of debt accumulation. By setting a personal limit well below the card’s actual credit limit and always paying off purchases before interest accrues, young cardholders can steadily build a strong credit profile without unnecessary stress.

Monitoring progress and using tools

As credit history develops, it is important to monitor progress. Many banks and financial institutions provide free access to credit score tracking, allowing users to see the effects of their habits over time. This regular monitoring creates awareness and reinforces good financial practices.

Additionally, educational resources from institutions like Experian help new credit cardholders understand how their decisions affect their scores. Staying informed ensures that mistakes are minimized and that corrective actions can be taken quickly if needed.

Expanding credit responsibly over time

Once the first year or two of positive credit history is established, it may be beneficial to apply for additional credit products. This could include a second credit card, ideally one with different benefits such as cashback or travel rewards. Diversifying credit accounts demonstrates to lenders that the borrower can handle multiple forms of credit responsibly, which positively impacts the FICO score.

However, this expansion should always be gradual and intentional. Applying for too many cards at once results in multiple hard inquiries, which can temporarily lower the score. The focus should remain on long-term growth rather than short-term access to credit.

Bruno Bentos
WRITTEN BY

Bruno Bentos

Undergraduate Physics student and copywriter since 2023 at the advertising company SPUN Midia, with experience writing about finance, entertainment, education, and more.
Contact: [email protected]
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