How Credit Scores Work

Published May 31, 2026 · Updated September 04, 2026 · 16 min read

Your credit score can play an important role when you apply for certain types of credit, such as a credit card, auto loan, or mortgage. Lenders may use credit scores along with information in your credit report and other factors to help evaluate the likelihood that you will repay borrowed money. Your credit can also be considered in some rental and other financial decisions, depending on the situation.

Understanding how credit scores work can make them feel less confusing. This guide explains what a credit score is, what can affect it, how scoring models can differ, and practical steps that may help you build and maintain healthy credit over time.

Quick Answer

Credit scores are numbers calculated from information in your credit reports. Lenders may use them to help estimate credit risk when you apply for credit. Your score can vary depending on the scoring model, version, credit bureau information, and when the score is calculated.

What Is a Credit Score?

A credit score is a number calculated using information in your credit report. Credit scoring models use that information to help estimate the likelihood that you will repay borrowed money as agreed. Lenders may consider a credit score along with other information when deciding whether to extend credit and what terms to offer.

Many commonly used credit scoring models, including widely used FICO and VantageScore models, use a range from 300 to 850. However, you can have more than one credit score because different scoring models, versions, credit bureaus, and lenders may use different information or calculations.

Credit Score Ranges at a Glance

Credit score ranges can vary depending on the scoring model. For example, commonly used FICO Scores generally range from 300 to 850. FICO groups scores into the following ranges:

In general, a higher credit score may make it easier to qualify for credit and may help you receive more favorable interest rates or loan terms. However, lenders can consider other information when making credit decisions, and the score or scoring model used can vary by lender and type of credit.

Why Your Credit Score Matters

Credit scores can affect your financial options when you apply for certain types of credit. In general, a stronger credit score may make it easier to qualify for credit and may help you receive more favorable interest rates or loan terms. However, lenders can also consider other information when making a decision.

Here are some common situations where your credit history or credit score may play a role:

• Applying for a credit card, auto loan, mortgage, or other type of credit
• Determining the interest rate or other terms you may be offered on a loan
• Renting an apartment, where a landlord may review information from your credit report as part of tenant screening
• Setting up certain utility or service accounts, where your credit history may be considered when determining whether a deposit is required
• Determining certain insurance premiums in states where credit-based insurance scores are permitted

Credit scores are only one part of your overall financial picture, but understanding how they work can help you make informed decisions about borrowing and managing credit. Building a consistent history of paying bills as agreed and using credit responsibly can support your credit profile over time.

A Real Example

Imagine two borrowers each financing $25,000 for a 60-month auto loan. For illustration, assume Person A receives a 5% APR and Person B receives a 10% APR. Actual rates and loan offers depend on the lender and the borrower’s overall financial and credit profile.

In this hypothetical example, Person B would pay about $59 more per month and approximately $3,564 more in interest over the 60-month loan. The example shows how a higher interest rate can increase the cost of borrowing. It does not mean that a particular credit score will automatically qualify for a specific APR. Lenders may consider credit scores along with income, debt, loan terms, down payment, the vehicle, and other factors when making lending and pricing decisions.

The 5 Main Factors That Affect Your Credit Score

Different credit scoring models can weigh information in your credit reports differently. For example, FICO identifies five main categories of information used to calculate its widely used scores. The percentages below are general guidelines for how important each category is to a typical FICO Score, but the importance can vary depending on an individual’s credit profile.

Payment History

Payment history is generally the largest factor in a FICO Score, accounting for about 35 percent of the calculation. This category considers whether you have paid credit accounts as agreed and includes information such as late or missed payments. Payment history can have a significant effect on your score, although the impact of any particular item can depend on the rest of your credit profile.

Paying your bills on time is one of the most important habits for building and maintaining a healthy credit history.

Amounts Owed and Credit Utilization

Amounts owed account for about 30 percent of a typical FICO Score. One part of this category is your credit utilization ratio, which compares your revolving credit balances with your available revolving credit limits. For example, if a credit card has a $1,000 limit and a $500 reported balance, the utilization on that card is 50 percent.

In general, using less of your available revolving credit can be better for your score than using more. You may often hear advice to keep utilization below 30 percent, but 30 percent is not a universal cutoff that guarantees a particular score. Paying down revolving balances can lower your utilization and may help your credit profile.

Length of Credit History

Length of credit history accounts for about 15 percent of a typical FICO Score. Scoring models may consider factors such as the age of your oldest and newest accounts and the average age of your accounts.

Older accounts can contribute to a longer credit history, but that does not mean you should always keep an account open solely for your credit score. Before closing an account, consider factors such as fees, how closing it could affect your available credit and utilization, and whether the account still serves a useful purpose.

Credit Mix

Credit mix accounts for about 10 percent of a typical FICO Score and considers the different types of credit accounts in your credit history, such as credit cards and installment loans. Having experience managing different types of credit can be one part of the scoring calculation.

You do not need to take on unnecessary debt or open a new account simply to improve your credit mix.

New Credit and Inquiries

New credit accounts for about 10 percent of a typical FICO Score. Applying for credit can result in a hard inquiry, which may affect your score. Opening several new accounts within a short period can also influence this category.

Not every credit check is a hard inquiry. Checking your own credit generally does not hurt your credit score, and some lender or account-review inquiries are also treated differently. When shopping for certain types of loans, multiple inquiries made within a limited shopping period may be treated as a single inquiry by some scoring models.

How to Check Your Credit Score for Free

There are several ways to check a credit score without paying for it. Many banks, credit card issuers, and other financial services provide customers with access to a credit score through their websites or mobile apps. The score you see may vary depending on the scoring model, credit bureau data, and provider.

You can also review your credit reports for free through AnnualCreditReport.com, the federally authorized website for free credit reports from Equifax, Experian, and TransUnion. Your credit reports contain information used to calculate credit scores, but the reports themselves generally do not include a free credit score.

Checking your own credit report or credit score generally does not hurt your credit score. Reviewing your credit reports regularly can also help you identify inaccurate information or signs of possible identity theft.

Common Credit Score Mistakes to Avoid

Some credit habits can make it harder to build or maintain a strong credit profile. Being aware of them can help you make more informed decisions about how you use and manage credit:

• Missing payment due dates or making payments late
• Carrying high credit card balances relative to your available credit
• Applying for several new credit accounts within a short period
• Closing an older credit card without considering how it could affect your available credit, utilization, and credit history
• Ignoring inaccurate information or unfamiliar accounts on your credit reports

You do not need a perfect credit history to make progress. Consistent habits, such as paying bills on time, keeping revolving balances manageable, and reviewing your credit reports for accuracy, can support your credit profile over time.

How Long Does It Take to Improve a Credit Score?

There is no single timeline for improving a credit score. How quickly your score changes depends on what is affecting it, when updated information is reported to the credit bureaus, the scoring model being used, and the rest of your credit profile.

Some changes may be reflected after updated account information is reported. For example, paying down a credit card balance may lower your reported credit utilization once the new balance appears on your credit reports. Other issues can take longer to overcome, especially when negative information remains on your credit reports.

Building a stronger credit profile is generally a gradual process. Rather than focusing on a specific number of days or months, concentrate on habits you can control, such as paying bills on time, managing balances, limiting unnecessary applications for new credit, and reviewing your credit reports for accuracy.

Simple Ways to Improve Your Credit Score

Building a stronger credit profile usually takes time, but consistent habits can help. Here are practical steps that may support your credit over time:

• Pay your bills on time, since payment history is an important factor in many credit scoring models
• Keep your credit card balances manageable relative to your available credit
• Think carefully before closing older credit card accounts, especially if doing so could significantly reduce your available credit
• Apply for new credit when it serves a financial purpose rather than opening accounts solely to try to improve your score
• Review your credit reports regularly and dispute information you believe is inaccurate
• Work on paying down existing debt as your budget allows

If credit card balances are contributing to high utilization, a structured debt payoff plan can help you organize your payments. Our guide on Debt Snowball vs. Debt Avalanche: Which Payoff Method Is Right for You? walks through two common payoff strategies, and the Debt Payoff Calculator can help you estimate how different payment amounts may affect your payoff timeline.

How Long Does Negative Information Stay on Your Credit Report?

Most negative information does not remain on a credit report indefinitely. Under federal credit reporting rules, many types of negative information can generally be reported for up to seven years, while some information may remain longer.

Common examples include:

• Late payments: generally up to 7 years
• Collection accounts: generally up to 7 years
• Chapter 7 bankruptcy: up to 10 years
• Chapter 13 bankruptcy: generally 7 years

The exact reporting period can depend on the type of information and the circumstances. Accurate negative information generally cannot be removed simply because it is unfavorable, but you have the right to dispute information that you believe is inaccurate or incomplete.

Negative information can affect credit scores differently depending on the scoring model and the rest of your credit profile. In general, more recent negative information may have a greater effect than older information.

How Credit Scores Connect to Your Bigger Financial Picture

Your credit score is one part of your overall financial picture. A budget does not directly determine your credit score, but it can help you organize your money so you are better prepared to make payments on time, manage debt, and avoid relying as heavily on credit for everyday expenses.

Building emergency savings can also support your broader financial stability. Having money available for unexpected expenses may reduce the need to put an emergency expense on a credit card or take on additional debt.

If you want to strengthen the financial habits that support responsible credit management, a budget can be a useful place to start. Our article on the 50/30/20 Budget Rule Explained offers one framework for organizing your spending, and the Monthly Budget Calculator can help you see how your income and expenses fit together. Our guide on How Much Emergency Fund Should You Actually Have? explains factors to consider when choosing an emergency savings target.

Frequently Asked Questions

What is a good credit score?

What counts as a good credit score depends on the scoring model and the lender. For example, FICO generally classifies scores from 670 to 739 as Good, 740 to 799 as Very Good, and 800 to 850 as Exceptional. A higher score may help you qualify for more favorable credit terms, but lenders can consider other information when making credit decisions.

How fast can I improve my credit score?

There is no single timeline for improving a credit score. Changes depend on what is affecting your score, when updated information is reported to the credit bureaus, the scoring model being used, and the rest of your credit profile. Consistent habits such as paying bills on time and managing credit card balances can support your credit over time.

Does checking my credit score hurt it?

Checking your own credit score generally does not hurt your score. Checking your own credit report also does not hurt your score. These types of checks are different from hard inquiries that may occur when you apply for new credit.

Can I have a good credit score without a credit card?

It is possible to build credit without a credit card if other accounts that are reported to the credit bureaus provide enough information for a scoring model to calculate a score. For example, certain installment loans may contribute to your credit history. Whether an account helps build credit depends in part on whether and how it is reported to the credit bureaus.

Do I have only one credit score?

No. You can have multiple credit scores because different scoring companies, scoring models, model versions, credit bureaus, and lenders may use different information or calculations. Your scores can also change as information in your credit reports is updated.

What should I do if I find an error on my credit report?

If you believe information on your credit report is inaccurate or incomplete, you can dispute it with the credit reporting company that provided the report. You may also contact the company that furnished the information. Keep copies of supporting documents and records related to your dispute.

Can Paying Off Debt Increase My Credit Score?

Paying down debt may help your credit score in some situations, but the effect depends on the type of debt and the rest of your credit profile. For example, paying down credit card balances can lower your credit utilization once the updated balances are reported, which may help your score. Paying off an installment loan can affect your credit profile differently, so paying off debt does not guarantee that your score will immediately increase.

Reducing debt can still benefit your overall financial picture even when the effect on your credit score is small or temporary. If you are ready to make a plan, the Debt Payoff Calculator can help you estimate how different payment amounts may affect your payoff timeline.

Key Takeaways

• Credit scores are calculated using information in your credit reports, and you can have more than one score.
• Payment history and amounts owed are important factors in commonly used FICO scoring models.
• Lower credit card utilization may help your credit score, but there is no universal utilization percentage that guarantees a particular score.
• Checking your own credit score or credit report generally does not hurt your credit score.
• Building and maintaining a strong credit profile generally takes consistent credit habits over time.

The Bottom Line

Understanding how credit scores work can help you make more informed decisions about borrowing and managing credit. Your scores are calculated using information in your credit reports, and the exact result can vary depending on the scoring model, credit bureau data, and when the score is calculated.

You do not need to focus on achieving a perfect score. Instead, concentrate on the credit habits you can control: pay bills on time, keep credit card balances manageable, apply for new credit thoughtfully, and review your credit reports for accuracy. Building and maintaining a strong credit profile generally takes time and consistency.

Your credit score is only one part of your broader financial picture. Managing debt, maintaining a workable budget, and building savings can help strengthen your overall financial position while you continue developing healthy credit habits.

Related Resources

Calculators:

• Monthly Budget Calculator
• Debt Payoff Calculator
• Savings Goal Calculator

Articles:

• The 50/30/20 Budget Rule Explained
• Debt Snowball vs. Debt Avalanche: Which Payoff Method Is Right for You?
• How Much Emergency Fund Should You Actually Have?

Sources & References

This article was reviewed using consumer-finance and credit-reporting resources on credit scores, credit reports, scoring factors, credit inquiries, and how credit information can affect borrowing decisions.

• Consumer Financial Protection Bureau (CFPB) — Understand Your Credit Score
• Consumer Financial Protection Bureau (CFPB) — How Long Does Information Stay on My Credit Report?
• FICO / myFICO — What’s in My FICO Scores?
• AnnualCreditReport.com — Free Credit Reports

About Everyday Money Tools

Everyday Money Tools provides simple, free calculators and easy-to-understand guides to help you manage your money with confidence. From budgeting and saving to paying off debt and understanding your paycheck, our tools and articles are designed to make everyday financial decisions clearer and less stressful.

This article is for general educational purposes and is not individualized financial or credit advice. Credit scoring models, lender requirements, and credit-reporting practices can vary. Sources reviewed September 04, 2026, include the Consumer Financial Protection Bureau, FICO, and AnnualCreditReport.com.