Amanda Foster is an Accredited Financial Counselor specializing in credit repair and debt management. She has helped over 400 clients improve their credit scores and access better financing terms. View full bio →
Published February 1, 2026 · Updated March 25, 2026
Reviewed by Marcus Williams, MBA
Your credit score affects your ability to borrow money and the interest rate you pay. Understanding the five factors that determine your score allows you to improve it systematically — and the improvements can save tens of thousands of dollars over a lifetime.
Disclaimer: This article is for informational and educational purposes only. It does not constitute personalised financial, investment, tax, or legal advice. Always consult a qualified financial professional before making any financial decisions.
Your credit score is a three-digit number (typically 300–850) that lenders use to assess the risk of lending you money. A higher score means lower interest rates on mortgages, car loans, and credit cards — potentially saving tens of thousands of dollars over a lifetime. The difference between a 620 credit score and a 760 credit score on a $300,000 30-year mortgage can be $50,000–$80,000 in total interest paid.
The most widely used credit scoring model is the FICO score, used by approximately 90% of top lenders. FICO scores are calculated from five factors, each weighted differently: payment history (35%), credit utilization (30%), length of credit history (15%), credit mix (10%), and new credit inquiries (10%).
The single most important factor is whether you pay your bills on time. A single missed payment can drop your score by 50–100 points and remains on your credit report for seven years. Two missed payments can drop your score by 100–150 points. A bankruptcy can drop your score by 200 points and remains on your report for 10 years.
Setting up automatic minimum payments eliminates the risk of accidental missed payments. Even if you cannot pay the full balance, paying the minimum on time protects your payment history. The minimum payment is not optimal for debt payoff, but it is essential for credit score maintenance.
Credit utilization is the percentage of your available credit that you are using. Using $3,000 of a $10,000 credit limit is 30% utilization. Keeping utilization below 30% — ideally below 10% — significantly improves your score. Paying your balance in full each month is the most effective strategy.
If you cannot pay your balance in full, consider making multiple payments per month. Credit card issuers report your balance to the credit bureaus once per month, typically on your statement closing date. Making a payment before the statement closes reduces the balance that gets reported, lowering your utilization.
Requesting a credit limit increase is another way to lower utilization without reducing spending. If your limit increases from $5,000 to $10,000 and your balance stays at $1,500, your utilization drops from 30% to 15%.
Longer credit history generally improves your score. The age of your oldest account, newest account, and average age of all accounts all matter. This is why closing old credit card accounts — even unused ones — can hurt your score. The account's age continues to count toward your credit history as long as it remains open.
If you have a credit card you no longer use, consider keeping it open with a small recurring charge (like a streaming subscription) paid automatically. This maintains the account's age and keeps it active without requiring manual management.
Having a mix of credit types (credit cards, installment loans, mortgage) demonstrates that you can manage different types of debt responsibly. Someone with only credit cards may have a lower score than someone with both revolving and installment credit. However, do not open new accounts just to improve your credit mix — the inquiry and new account age impact may outweigh the benefit.
Applying for new credit generates a hard inquiry that can temporarily lower your score by a few points. Multiple applications in a short period signal financial stress to lenders. Rate shopping for mortgages or auto loans within a 14–45 day window is treated as a single inquiry by most scoring models — so you can compare rates without penalty.
If you have no credit history, start with a secured credit card (where you deposit cash as collateral) or become an authorized user on a family member's account. Use the card for small purchases and pay the balance in full each month. After 6–12 months of on-time payments, you will have established a credit history and can apply for an unsecured card.
Approximately 34% of Americans have at least one error on their credit report, according to a 2021 Consumer Reports study. Errors can include accounts that are not yours, incorrect payment history, or outdated negative information. You are entitled to a free credit report from each of the three major bureaus (Equifax, Experian, TransUnion) annually at AnnualCreditReport.com. Dispute errors directly with the bureau that is reporting them.
FICO score factor weights from myFICO.com. Mortgage interest savings calculations based on Bankrate mortgage calculator. Credit report error statistics from Consumer Reports "The Credit Trap" investigation (2021). Free credit reports available at AnnualCreditReport.com.
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