How Does A Credit Score Work?

11/21/2025

Your credit score has a big impact on your finances. It can affect significant milestones, like buying a home, getting approved for a car loan, or qualifying for a new credit card. But because it’s not something you see every day, it’s normal to wonder, “How does a credit score work?”

In this guide, we’ll break down credit scores in simple terms so you can understand what goes into them and how to improve yours. A higher score can help you secure better rates and offers, ultimately saving you money over time.

With Arkansas Federal Credit Union’s Credit IQ, you can check and monitor your credit score anytime. It’s completely free and has no negative impact on your score. Get started with Credit IQ today and see how easy managing your credit can be.

What Is A Credit Score?

A credit score, simply defined, is a quick way for others to assess how financially responsible you are. The most common credit score definition is a number between 300 and 850 that represents your financial habits, like how you manage credit and repay debt.

The meaning of credit scores comes from how they are calculated. Credit scores are generated by different credit score models, based on five key factors:

Payment history
Amounts owed
Length of credit history
New credit
Credit mix

Credit IQ uses your information from TransUnion, one of the three major credit bureaus, and uses the VantageScore model to determine your credit score. Equifax, Experian, and TransUnion developed this credit score to provide a more consistent scoring approach across all three bureaus.

Why Is A Credit Score Important?

Your credit score influences some of the biggest financial decisions you’ll make. A higher score means you’ll get access to lower interest rates and better loan terms, which can save you thousands of dollars over time.

For instance, someone with strong credit might be offered a 4% interest rate on a $25,000 car loan, while someone with weaker credit could be offered a rate of 10%. That difference alone adds up to more than $3,000 in extra interest for the very same car.

Even if you aren’t looking to get a loan or open a credit card, your credit score can also impact other parts of your life and finances in ways you may not expect.

What Is A Credit Score Used For?

Your credit score is a rating that lenders and other organizations use to assess your financial reliability. Here are some of the most common situations where your credit score is used:

Loan or Credit Approval: Lenders will use your credit score to decide if you will be approved for a loan (including a mortgage) or a credit card.
Interest Rates and Loan Terms: Typically, borrowers with high credit scores will be offered lower interest rates on credit cards and loans and larger loan amounts.
Prequalified or Promotional Offers: If you have a high credit score, you may be eligible for special offers and low-rate promotions.
Rental Applications: Landlords may run a credit check as part of your rental application and may reject your application if your score is not high enough.
Insurance Premiums: Some home and auto insurance providers use credit scores in how they calculate your insurance premiums.
Employment Background Checks: Some companies will look at credit scores during job applications as a way to gauge responsibility.

Credit Score Factors Explained

So, what is a credit score based on? Your credit score is determined by five factors, and each carries a different weight. Here is an overview of the credit score factors explained:

Payment History (35%)

This is the biggest factor in your credit score and refers to your record of making payments on time. Even missing one payment can impact your credit score, so it’s important to prioritize making your payments on time.

Credit Utilization (30%)

Credit utilization measures how much of your available credit you’re using. It is calculated by dividing your total credit card balances by your total credit limit. For example, if you have a $10,000 credit limit and you owe $2,000, your credit utilization is 20%.

Only revolving credit, like credit cards and lines of credit, is included in credit utilization. Things like mortgages, car loans, and personal loans aren’t included because they are installment loans with fixed payments. Revolving credit allows lenders to get a better view of how you manage credit that is available to you, which is why they monitor it.

It’s recommended to keep your credit utilization below 30%, but keeping it below 10% is even better. Lenders prefer to see lower credit utilization rates because it shows them you’re managing credit well without relying too heavily on it.

Credit History (15%)

This refers to the length of time you’ve had a line of credit. In general, the longer you’ve had a credit history, the better it is for your credit score. Longer credit history gives lenders more information on how you’ve managed credit over time, which can make you appear more reliable and more likely to repay what you borrow.

To calculate this, credit scoring models will look at the age of all your accounts. That’s why keeping older credit cards open can increase your credit score, even if you’re not actively using them.

Credit Mix (10%)

Credit mix looks at the different credit types you have and how well you manage them. Typically, having different types of credit and managing them well can help increase your credit score.

Credit mix looks at both installment loans and revolving credit:

Installment loans: Loans where you borrow a set amount and repay it over scheduled payments (such as auto loans, mortgages, student loans)
Revolving credit: Credit accounts where you can borrow money as you need it, up to a spending limit set by the lender (such as credit cards or HELOCs).

You don’t have to open new types of credit to increase your credit score, but if you already have them, it can be an advantage.

Credit Activity (10%)

Credit activity considers how often you apply for new credit. When you apply for a new credit card or loan, the lender will typically run a hard inquiry on your credit report. A hard inquiry is the line item that appears on your credit report when a lender is processing your credit application. A hard inquiry may result in a few points being deducted from your score, typically around 5 points. However, if you make all your payments on time, the points will be reinstated within a few months.

If you have too many hard inquiries, it may appear that you are relying too heavily on debt or opening too many accounts, which could suggest that you may struggle to make payments.

Credit Score Ranges Explained

Credit scores range from 300 to 850, but the exact number can vary depending on the scoring model. Each financial institution may use a different model or an enhanced version for specific loan products.

To help you understand what is considered a good credit score, here’s a breakdown of the credit score ranges:

Exceptional (800-850): Excellent credit. Borrowers in this range typically receive the best rates and terms.
Very Good (740-799): Strong credit. You’re likely to be approved and receive good terms.
Good (670-739): Average or slightly above. Most lenders consider this a safe range for approvals.
Fair (580-669): Below average. You may still qualify for credit, but you will likely have higher interest rates.
Poor (300-579): Low credit. Approval is more difficult, and when approved, interest rates are high.

How to Check Your Credit Score for Free

If you want to find out what your credit score is, you can check it for free using Credit IQ, Arkansas Federal’s online credit score tool.

With Credit IQ, you’ll get a personalized credit report card that shows your full credit report, highlights the factors affecting your score, and offers tips to help you improve it. Checking your score with Credit IQ is free and is a soft inquiry, which means it won’t negatively impact your credit.

Ways to Improve Your Credit Score

If your credit score isn’t quite where you want it to be, the good news is that there are steps you can take to improve it.

Pay your bills on time to build a strong payment history.
Pay down credit card debt, which will lower your credit utilization ratio.
Limit how often you apply for new lines of credit to avoid unnecessary hard inquiries.
Keep your older credit accounts open to increase the average age of your credit history.
Review your credit report for mistakes that are lowering your score.

Improving your credit score doesn’t happen overnight, but because your credit score plays such a significant role in your finances, it’s worth the effort to take the steps to improve it.

Check & Monitor Your Credit with Arkansas Federal Credit Union

Understanding the basics of credit scores is key to building a strong financial future. When you know your score and the factors that influence it, you can make smarter decisions to improve it over time.

With Credit IQ, Arkansas Federal’s free credit score tool, found within Digital Banking, keeping track of your credit is simple. Your score updates daily, and each month you’ll get a detailed report with insights into your credit profile, along with personalized tips to help you grow your score.