Credit Score

Quick Definition

A credit score is a three-digit number ranging from 300 to 850 that represents your creditworthiness -- essentially, how likely you are to repay borrowed money based on your past behavior. The higher the score, the more favorable borrowing terms (lower interest rates, higher limits, easier approvals) you receive.

What It Means

Your credit score is one of the most financially consequential numbers in your life. It determines whether you can get a mortgage, what interest rate you pay on car loans, whether a landlord approves your rental application, and sometimes even whether an employer offers you a job.

The most widely used scoring model is the FICO Score, developed by the Fair Isaac Corporation. The competing model, VantageScore, uses the same 300-850 range but weights factors slightly differently. Most major lending decisions -- especially mortgages -- use FICO.

Your credit score is not a measure of how much money you have or how responsible you are with your finances broadly. It measures one specific thing: your history of borrowing and repaying debt. Someone with no debt and $1 million in savings could have a poor credit score simply from lack of borrowing history.

How Credit Scores Are Calculated

FICO Score Components

Credit Score Ranges

The Cost of a Lower Credit Score

This is where credit scores translate directly into dollars. Consider a $400,000 mortgage (30-year fixed):

The difference between a 760 score and a 620 score on a $400,000 mortgage: $443 more per month and $158,310 more in total interest over 30 years.

How to Build and Improve Your Credit Score

1. Pay On Time (35% of score -- most important)

Even one 30-day late payment can drop your score 50-100 points. Set up autopay for at least the minimum payment on every account.

2. Keep Utilization Low (30% of score)

Credit utilization = Total credit card balances / Total credit card limits

Example: If you have a $10,000 credit limit and carry a $2,000 balance, your utilization is 20%. Keep it under 30% at minimum, under 10% for maximum score benefit.

Tip: Pay your credit card balance in full every month, or pay it down before the statement closing date to ensure the reported balance is low.

3. Keep Old Accounts Open (15% of score)

The length of your oldest account and the average age of all accounts matter. Closing a credit card you have had for 10 years shortens your average account age and can drop your score.

4. Limit Hard Inquiries (10% of score)

Every time a lender pulls your credit for a loan application, it creates a "hard inquiry" that temporarily reduces your score by 5-10 points. Multiple mortgage or auto loan inquiries within a 14-45 day window count as a single inquiry (rate-shopping protection).

5. Diversify Credit Types (10% of score)

Having a mix of revolving credit (credit cards) and installment loans (auto, student, mortgage) demonstrates you can manage different types of debt.

Credit Reports: The Source of Your Score

Your credit score is calculated from your credit report, which is maintained by three major credit bureaus: Equifax, Experian, and TransUnion.

Each bureau maintains its own report. Discrepancies between bureaus are common. You are entitled to one free credit report per year from each bureau at AnnualCreditReport.com -- the only federally authorized free report site.

Check your reports for errors: A Federal Trade Commission study found that 1 in 5 Americans has an error on at least one credit report. Common errors include:

• Accounts that do not belong to you (possible identity theft)
• Incorrectly reported late payments
• Accounts that should show as closed
• Outdated negative information

Dispute errors directly with the bureau through their online portals. The bureau must investigate within 30 days.

How Long Negative Information Stays on Your Report

Secured Credit Cards: Building Credit from Scratch

If you have no credit history or very bad credit, a secured credit card is the fastest legitimate way to build credit:

1. You deposit cash as collateral ($200-$500 typical minimum)
2. The deposit becomes your credit limit
3. Use the card for small purchases and pay in full monthly
4. After 12-24 months of on-time payments, the issuer often upgrades to an unsecured card and returns your deposit
5. Your payment history is reported to all three bureaus, building your score

Key Points to Remember

• Payment history (35%) is the single most important factor -- never miss a payment
• Utilization (30%) is the second most important -- keep balances under 30% of limits, ideally under 10%
• A single late payment can drop your score 50-100 points but takes 7 years to fully fall off
• The difference between a 620 and 760 FICO score on a $400K mortgage costs over $150,000 in extra interest
• Check your free credit reports annually at AnnualCreditReport.com for errors
• Closing old credit cards can hurt your score by reducing average account age and available credit

Common Mistakes to Avoid

• Missing even one payment: A single 30-day late payment can haunt your score for years. Set up autopay.
• Maxing out credit cards: High utilization is the fastest way to damage a good score, even temporarily.
• Applying for too much credit at once: Multiple hard inquiries signal financial stress to lenders.
• Closing old accounts: Keep old cards open (even with a $0 balance) to preserve history and available credit.
• Paying collections without getting "pay-for-delete" in writing: Paying a collection does not automatically remove it from your report; it just changes the status. Negotiate removal before paying.

Frequently Asked Questions

Q: How often does my credit score update? A: Credit scores update whenever your credit report updates, which happens when lenders report new information -- typically monthly. Your score can change multiple times per month.

Q: Does checking my own credit score hurt it? A: No. Checking your own credit is a "soft inquiry" and does not affect your score. Only "hard inquiries" (from lenders when you apply for credit) impact your score.

Q: Can I have a good credit score without any debt? A: It is very difficult. The credit scoring model specifically rewards having and successfully managing credit. Without any credit accounts, you typically have no credit score at all (called "credit invisible"). A secured credit card paid in full monthly gives you credit history without carrying debt.

Q: What is a good credit score to buy a house? A: Conventional loans typically require a minimum of 620-640 FICO. FHA loans allow scores as low as 580 (with 3.5% down) or even 500 (with 10% down). For the best mortgage rates, you want a score of 740 or higher.