How Credit Scores Work: A Plain English Breakdown

Your credit score is a three-digit number that lenders, landlords, and sometimes employers use to judge your financial reliability. It’s not a measure of your worth as a person, but it does affect the interest rate on your mortgage, whether you get approved for an apartment, and how much you pay for car insurance in most states. Understanding what goes into it gives you control over it.

What makes up your FICO score

FICO scores range from 300 to 850. About 90% of lenders use some version of the FICO model. The score breaks down into five components:

• Payment history (35%): whether you pay bills on time. A single 30-day late payment can drop a 780 score by 60 to 100 points. Payments more than 30 days late hurt more. Collections, bankruptcies, and charge-offs are the most damaging marks.
• Credit utilization (30%): how much of your available credit you’re using. Keeping this under 10% is better than under 30%, despite what most articles say. Zero percent isn’t ideal either because it looks like you’re not using credit at all.
• Length of credit history (15%): the average age of your accounts. This is why financial advisors say to keep old cards open even if you don’t use them. Closing your oldest card shortens your average account age.
• Credit mix (10%): having different types of credit (credit cards, installment loans, mortgage) scores slightly better than having only one type.
• New credit (10%): recent credit applications. Each hard inquiry drops your score by a few points. Multiple applications in a short period signal desperation to lenders.

How to check your score without hurting it

Checking your own credit score is a soft inquiry. It does not affect your score. You can check as often as you want.

Free sources for your score: most credit card issuers show your FICO score in their app. Discover offers a free FICO score to anyone, even non-cardholders, through their Credit Scorecard tool. Credit Karma shows VantageScore, which is a different model and often a bit higher than your FICO.

For your full credit report (which shows the details behind the score), go to annualcreditreport.com. You’re entitled to one free report from each bureau (Equifax, Experian, TransUnion) per year. Since 2020, they’ve been offering weekly free reports.

Building credit from scratch

If you have no credit history, you’re “credit invisible.” About 26 million Americans fall into this category. Building credit from nothing takes six to twelve months of activity before you get a scoreable file.

Starting options:

• Secured credit card: you put down a deposit (usually $200 to $500) that becomes your credit limit. Use the card for small purchases and pay the statement in full every month. After six to twelve months, most issuers upgrade you to an unsecured card and refund the deposit.
• Credit builder loan: a small loan (typically $300 to $1,000) where the lender holds the money in a savings account while you make payments. After you finish paying, you get the money. It builds payment history without giving you access to credit you might misuse.
• Authorized user: someone with good credit adds you to their card. Their payment history on that card appears on your credit report. You don’t need to use the card or even have it in your possession.

Fixing a damaged credit score

Recovery time depends on what caused the damage:

• Late payments: stay on your report for 7 years. The impact fades over time, especially after 2 years.
• Collections: 7 years from the date of the original delinquency. Paying them off helps with newer scoring models.
• Bankruptcy: Chapter 7 stays for 10 years. Chapter 13 stays for 7 years.
• Hard inquiries: fall off after 2 years, but only really affect your score for about 12 months.

The fastest way to improve a damaged score is to bring all accounts current (stop the bleeding), pay down credit card balances (lower utilization), and then wait. Time heals most credit damage. There are no legitimate shortcuts that work faster than consistent good behavior.

Credit repair companies: mostly a waste of money

Companies that promise to “fix” your credit charge $50 to $150 per month and do things you can do yourself for free. They dispute negative items on your credit report, which you can do directly with the credit bureaus online. Legitimate errors should be disputed. Accurate negative information, however, can’t be legally removed before it naturally falls off.

If a company guarantees they can remove accurate negative items from your report, that’s a red flag. The Credit Repair Organizations Act makes it illegal to misrepresent what credit repair services can do.

Score ranges and what they mean

Your credit score isn’t permanent. It changes monthly based on your behavior. The fundamentals are simple: pay on time, keep balances low, don’t open too many accounts at once, and let your history age. The score takes care of itself.