How Does a Credit Score Simulator Work?

Quick Answer

Credit score simulators are interactive tools that use the same factors credit scoring models use to estimate the impact credit and payment decisions will have on your credit scores.
Simulators can’t tell you the exact number of points your score may increase or decrease.

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Credit score simulators let you test various scenarios, such as making a late payment or paying down a credit card balance, to see how they might affect your credit scores. They can't predict the exact impact of individual actions on your score, but they can help you understand how different factors may affect your credit so you can make informed financial decisions. Here's how they work.

What Is a Credit Score Simulator?

A credit score simulator is an interactive online tool that estimates the impact different debt and payment decisions may have on your credit scores. Simulators can't guarantee results, but they can give you an idea of whether your scores may increase or decrease in different scenarios.

Many are available for free, but you may need to create an account so the tool can access your credit report. Others are available for a fee.

How a Credit Score Simulator Works

Credit score simulators use the same factors credit scoring models use to estimate the impact various actions, such as applying for a loan or maxing out a credit card, may have on your credit scores. Depending on the simulator, you may only be able to test one scenario at a time, or you may be able to test a combination of actions.

Some simulators pull information from one of your credit reports to calculate your score. Others rely on users to provide information the model uses to estimate a score. Simulators typically only show how the scenario you're testing may affect a single credit score. You likely have many credit scores, and the change you simulate may not affect all of them equally.

You can see how your FICO^® Score^☉ ^Θ 8 might change in various situations when you use the Experian FICO^® Score Simulator, available with a Premium Experian membership.

How Your Credit Score Is Calculated

Credit score simulators base potential changes to your credit scores on the factors used in credit scoring calculations.

1. Payment History

Your payment history has the biggest impact on your credit scores. On-time payments help you build a positive credit history, while late payments, collection accounts, charge-offs, foreclosures and bankruptcy negatively affect your credit.

It doesn't take a major event like filing for bankruptcy to see your credit scores drop. A single late payment can significantly impact your scores and tends to hit people with good credit harder than those who already have negative marks on their credit reports. The impact typically diminishes over time if you practice positive credit-building habits, but most negative marks remain on your credit reports for seven years.

Learn more: What's the Most Important Factor of Your Credit Score?

2. Amounts Owed

The amount of outstanding debt you have is the second most important factor credit scoring models use. It includes what you owe on installment loans and revolving lines of credit. Getting too close to your credit limits increases your credit utilization on your revolving accounts, such as credit cards, and can hurt your credit scores.

Experts generally recommend keeping your utilization below 30% to avoid score damage, but people with the highest credit scores usually have a utilization below 10%.

Tip: Scoring models calculate your credit utilization on a per-card basis, as well as across all your credit cards. So, having a high balance on one card but a low overall credit utilization rate can still negatively impact your credit scores.

3. Length of Credit History

The length of your credit history is measured by the age of your oldest account, newest account and the average age of all your accounts. Longer credit histories typically have a positive impact on your credit scores if you've been managing credit responsibly.

4. Credit Mix

Creditors want to know that you can handle different types of credit. Scoring models favor a mix of credit types, including installment loans and revolving accounts. However, it's generally not advisable to open a new account just to improve your credit mix.

Tip: Industry-specific credit scores are designed to predict how someone will handle certain types of credit, such as an auto loan or credit cards. How you've handled those types of accounts in the past may play a bigger role in calculations for industry-specific scores.

5. New Credit

Hard inquiries are credit checks associated with applying for new credit. They typically result in a small, temporary dip in your credit score. However, if you're rate shopping for a mortgage, auto loan or student loan, all inquiries made within a 14- to 45-day period count as a single inquiry. Timelines vary by credit-scoring model.

Why Can Your Credit Scores Differ?

You probably have dozens of credit scores or more, and it's not unusual for them to vary. Here are the key reasons why your scores may be different.

Credit scoring models: Popular credit scoring models like FICO and VantageScore^® have multiple versions, and some creditors have their own proprietary models. Models weigh credit scoring criteria differently, and some use alternative data like rent payments and buy now, pay later (BNPL) financing, while others only use traditional credit data. These differences can result in score variations.
Credit reports: Creditors get to choose which credit bureaus they report information to, and they may not report to all three. As a result, different reports may include different information.
Timing: When the score is calculated affects the information that's available. For example, your credit utilization may be low if a lender checks your score right after you've made a credit card payment. But it could be high if your score is calculated before you pay your bill for the month.

Tip: The factors that affect your scores are more or less the same across scoring models, so focusing on making on-time payments, keeping credit card balances low and minimizing new applications for credit can help improve your credit scores, regardless of the model a creditor uses.

What Credit Score Simulators Can and Cannot Do

Credit score simulators can be a helpful tool, but they have limitations. Here's a breakdown of what they can and can't do.

What Credit Score Simulators Can Do

Credit score simulators can estimate how much your scores might change when you:

Have a late payment, collection account, loan default, foreclosure, repossession or bankruptcy
Pay down credit card balances
Apply for a loan or credit card
Open a new account
Pay off an existing account
Transfer a credit card balance
Receive a credit limit increase

What Credit Score Simulators Cannot Do

A credit score simulator can't:

Predict the exact score impact specific actions will have
Estimate the effect scenarios will have on every credit scoring model available
Determine whether you'll be approved for credit
Factor in how your income, employment and assets affect your ability to qualify for credit

When Does It Make Sense to Use a Credit Score Simulator?

A credit score simulator can be a useful tool if you want to see how specific actions may affect your credit before taking them. Here are some common scenarios when using a simulator may be beneficial.

You're trying to decide which credit card balance to pay down first for the greatest score increase.
You're planning to apply for a new loan and don't want to do anything that could hurt your scores.
You want to request a credit limit increase on an existing credit card.
You're thinking of paying off an account early.
You're considering refinancing a loan.
You want to remove yourself as an authorized user from a loved one's credit card.

Other Ways to Monitor Your Credit

Keeping an eye on your credit lets you know where you stand, but using a credit score simulator isn't the only way to monitor it. Here are a few more.

Check your credit reports regularly. You can get free copies weekly from each of the three credit bureaus (Experian, TransUnion and Equifax) at AnnualCreditReport.com.
Enroll in credit monitoring services. Free and paid versions are available from the credit bureaus, credit card issuers and other companies.
Sign up for identity theft protection. Many of these services monitor your credit reports for suspicious activity.
Check your account statements regularly. You may be able to find issues that could hurt your credit, including signs of credit card fraud. Checking your accounts closely will give you the chance to report the fraud to your credit card company and, if necessary, file a dispute with the credit bureaus—something you have the right to do.

The Bottom Line

Credit score simulators can help you gain a better understanding of the factors that affect your credit scores and how your actions can influence them. But they don't replace the need to check your credit regularly to ensure the information on your credit reports is accurate.

You can get your FICO^® Score 8 based on your Experian credit report for free directly from Experian, and you can get free copies of your credit reports from all three credit bureaus at AnnualCreditReport.com.

You might also consider signing up for free credit monitoring to keep a closer eye on your reports and scores and receive alerts to any changes in your credit history.

How Good Is Your Credit Score?

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How Does a Credit Score Simulator Work?

In this article:

What Is a Credit Score Simulator?

How a Credit Score Simulator Works

How Your Credit Score Is Calculated

1. Payment History

2. Amounts Owed

3. Length of Credit History

4. Credit Mix

5. New Credit

Why Can Your Credit Scores Differ?

What Credit Score Simulators Can and Cannot Do

What Credit Score Simulators Can Do

What Credit Score Simulators Cannot Do

When Does It Make Sense to Use a Credit Score Simulator?

Other Ways to Monitor Your Credit

The Bottom Line

What Makes a Good FICO^® Score?

How Good Is Your Credit Score?

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In this article:

What Is a Credit Score Simulator?

How a Credit Score Simulator Works

How Your Credit Score Is Calculated

1. Payment History

2. Amounts Owed

3. Length of Credit History

4. Credit Mix

5. New Credit

Why Can Your Credit Scores Differ?

What Credit Score Simulators Can and Cannot Do

What Credit Score Simulators Can Do

What Credit Score Simulators Cannot Do

When Does It Make Sense to Use a Credit Score Simulator?

Other Ways to Monitor Your Credit

The Bottom Line

What Makes a Good FICO® Score?

How Good Is Your Credit Score?

Resources

Latest Research

Latest Reviews

What Makes a Good FICO^® Score?