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What Is a Credit Score?

Last Updated: July 19, 2023
6 min read

Key points about: credit scores

  1. Your credit score helps determine whether you qualify for credit cards, home loans, and other forms of credit.

  2. FICO® Scores are calculated from the data on your credit reports at the three major credit bureaus using mathematical algorithms, which are called credit scoring models.

  3. Most FICO® Credit Scores range from 300 to 850; the higher the score, the better.

When you apply for credit, whether for credit cards, an auto loan, or even home mortgages, one factor will come up again and again—your credit score. This three-digit figure can have a significant impact on your financial life. High scores may help give you access to lower interest rates, better loan terms, and more credit options, while low scores can prevent you from obtaining credit at all.
By understanding how your credit score is calculated, you can take actions that may help your score and avoid the missteps that can hurt it.

Credit score basics

When a company decides to give you credit, they’re giving you money with conditions that determine how you’ll pay it back. They decide whether they are able to give you money based on your credit score and credit history—because this is how they decide if you have the ability or likelihood of repaying their credit.

Lenders–and others, such as landlords–view your credit score as an assessment of your financial capability. If you have a lower credit score, lenders might be concerned about your financial reliability, and charge you more (in the form of a high interest rate) for the credit that they extend you. Different creditors have different thresholds for application approval, and sometimes a lower credit score might result in you being not approved for credit cards, bank loans, and home mortgages.

Let’s start with the different aspects that contribute to your credit score.

The main players in influencing credit score
  • Credit bureaus: Credit bureaus are companies that gather and compile information about your credit history to create credit reports, which inform your credit scores. There are three major nationwide credit bureaus—TransUnion, Experian, and Equifax—as well as several smaller credit bureaus that specialize in certain industries. A credit bureau may also sometimes be called a credit reporting agency or consumer reporting agency.
  • Creditors: These are the companies or places that provide credit, like banks and credit unions. Creditors report information about the accounts that you have with them (which can include your available credit, how you use the accounts, and financial transactions) to one, two, or all three of the main credit bureaus and/or some of the other reporting agencies.
  • Consumers: If you make purchases, you’re a consumer. The way you manage your finances can affect your credit score and learning how credit scores work may help you stay on top of your score.

Credit fact: According to Experian, before you have a credit history, you’re “credit invisible.” That means none of the credit bureaus have any information about you.

Factors that affect your credit score

Your credit score is calculated at the credit bureaus using algorithms, or credit scoring models, and each model assesses risk differently. One example is the FICO® Score. (You’ve probably heard of it because 90% of top lenders use FICO® Credit Scores, including Discover.1) A FICO® Score is based on five categories, with some categories having more importance than others. According to myFICO, scores are calculated as shown below:

Infographic: Learn how credit scores work
  • Payment history — approximately 35%: Your payment history is your record of making payments on time and whether you’ve missed any payments. Late and missed payments negatively impact your score, while on-time payments help keep it higher.
  • Amounts owed — approximately 30%: Your score also includes the amount of credit you’re using compared to the total amount of credit you’ve been provided. For example, if you have an account balance of $4,000 on a credit card with a credit limit of $10,000, you’re using 40% of your available credit for that card. This calculation is applied to all of your credit accounts, and the total percentage of credit in use is called your credit utilization ratio. A lower credit utilization ratio is generally better for your credit score, because creditors may think that someone using a large percentage of their available credit is having financial trouble.
  • Length of credit history — approximately 15%: Length of credit history refers to the age of your oldest credit account and the average age of all your accounts. Creditors and lenders want to see that you’ve had experience using credit and that you’ve maintained a credit card or made good on a loan over the long term. Your oldest account may be the first one you opened if the account is still in use, and closed accounts will eventually leave your credit report. An account closed in good standing will appear for 10 years, while one with negative information will be removed in 7 years, according to the Federal Trade Commission.
  • Your credit mix — approximately 10%: Your credit mix consists of the different types of credit that you use, including credit cards, car loans, a personal loan, mortgages, and more. Managing a mix of credit types can show that you’re a more responsible borrower and help your credit scores.
  • New credit — approximately 10%: When you’re interested in obtaining new or additional credit and you apply to a creditor, they will request your credit report and score. This is called a hard inquiry. If you have too many hard inquiries in a short period of time, it can suggest you’re seeking a lot of new credit, which may hurt your overall score.

Credit score ratings

Most FICO® Credit Scores range from 300 to 850, according to FICO—the higher your score, the better.

Perfect FICO® Credit Score & how a hard inquiry can impact it

Did you know?

Discover was the first major credit card to give you your FICO® Credit Score for free on your monthly statement and online.2 You can get a free Credit Scorecard with your updated FICO® Score every month and important information like credit utilization, number of missed payments, number of recent inquiries, length of credit history and total number of accounts.2

Check your Credit Score for free

Here is how FICO® Credit Score ranges and ratings are considered, according to FICO:

Exceptional credit score—800 to 850

Any score above 800 is considered excellent credit. People with these credit scores may qualify for the best interest rates.

Very good credit score—740 to 799

Creditors consider people that fall into this category as very dependable borrowers. They’re rarely late with payments and make responsible choices about their debt.

Good credit score—670 to 739

Consumers in this credit score range may have had small issues in their payment history, such as a late payment, or they may not have a very robust credit history. They’re still considered reliable borrowers.

Fair credit score—580 to 669

Consumers here may have at least one late payment and/or have high levels of credit card debt. In the fair credit score range, consumers may find themselves paying higher interest rates on credit and debt.

Poor credit score—579 or less

An individual with a poor credit score has likely made multiple late payments or even defaulted on a loan. Someone with a score of 579 or less may be denied credit altogether.

Credit fact: You can’t have a credit score of 0. The lowest FICO® Score is 300.

Does a credit score mean the same thing as a credit report?

Your credit score and credit report are related, but not quite the same thing. Your score quantifies your credit risk into a three-digit number. Your report, meanwhile, provides the data that informs your score.

Credit Score and reports explained

What’s in your credit report?

The data in your credit report is made up of your financial history. According to, some of the personal information that will appear in your credit report is bill payment history, loans, current debt, bankruptcy history, and records of lawsuits.

According to the Consumer Financial Protection Bureau, you have access to one free credit report from each of the three major credit reporting agencies every year. Furthermore, through December 2023 each of the national credit reporting agencies allows consumers to check their credit report once per week for free.

It’s a good idea to review your report at least annually. That way you can correct any errors that may be impacting your score.

Your credit score is an important indicator of your financial health and a tool that can help you access the credit you need. By understanding how it works and what you can do to impact it, you may put yourself on the path to better credit.

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