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The importance of a credit score

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A credit score might sound like a complicated financial concept, but it’s just a simple way of summarising your credit history. It’s designed to give organisations an overview of how someone has been able to manage their credit in the past, all shown in one number. Understanding what a credit score is can help make the process of applying for a loan much easier. 

This page provides general financial information for educational purposes only, not personalised advice.

The content on this website reflects financial rules and systems in England and may differ in other parts of the UK.

What is a credit score?

A credit score is a numerical summary of a person’s credit history. It is created using information from a credit report, which records how credit accounts have been used over time. The purpose of a credit score is to give a quick idea of past credit behaviour to companies without the need to look deep into every individual account in detail. For example, if someone wanted a personal loan and went to their bank, the bank would be more reluctant to give them the money they require if their credit score was low, rather then someone who had a good credit score.

Credit scores are usually shown within a range , or shown in bands. This all depends on the credit reporting agency or the scoring system being used. Commonly, the higher the score, the better an individual has shown that they’re able to manage credit responsibly, where a lower score could reflect missed payments, higher levels of debt, or perhaps just limited history. Credit scores are not permanent, they can change as new information gets added to a credit report. If someone is paying on time and in full, there is more evidence of responsibility with the debt, and could result in an increased score over time. 

Different credit agencies and lenders may use their own scoring models, meaning your score may appear slightly different from another. 

Credit scores are only used as a tool that organisations may use when reviewing applications for borrowing products. They don’t include income, savings, or employment history.

How does a credit score work?

When someone applies for credit, such as a loan or credit card, the organisation reviewing the application may look at information held on that persons credit file. Credit reference agencies collect and maintain this information using data shared by banks, building societies, credit card providers, and other financial organisations. Over time, this information builds a record of how credit has been used and managed. 

A credit score is created by analysing this credit file and summarising it into a single number. This score is designed to give a quick overview of past credit behaviour, rather than a full personal or financial profile. It is based on historical data and can be changed as new information gets reported. 

For example, if payments on a loan or credit agreement are made on time each month, this may be reported by a credit reference agency. Consistent payment history can have a positive effect on a credit score over time. On the other hand, missed or late payments may also be recorded and have an influence on changing the score. 

Several factors may help calculate a credit score, like payment history, amount of credit being used, how long credit accounts have been active, and any recent applications. Different credit reverence agencies may have different scoring modules, which means scores could look slightly different to different providers.

Below are listed the top 3 credit reference agencies within the UK
experian logo on gentle grey background
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Why is it important to know ?

Understanding your credit score can be helpful when looking at situations where credit checks are part of the process. Usually, credit scores are used by lenders and service providers to asses applications when looking for credit, alongside other information. A credit score can influence the range of financial products available, the terms attached to them, and even how easy it is to go through the application process. 

For example, there are two people applying for a mortgage, they both may have very different outcomes based on their credit history and score. Someone who has a stronger credit score and good track record of repaying on time may have access to a wider selection of mortgage products and could even be offered a lower interest rate. over the lifetime of a mortgage , even a slightly lower interest rate can lead to noticeable savings from overall payments. In contrast, someone who has a lower credit score may be in a position where their options are much more limited, face higher interest rates, or may even need to go through additional checks.

The same idea also applies to many other types of financial products, like a personal loan, credit cards, or possibly car financing. In some cases, non-borrowing agreements may be affected too, such as a rental application as it can show your financial responsibility to pay on time, with little issues. A credit score isn’t designed to determine every decision on its own, but it does play a role in providing someone with the best possible options.

Credit scores are simply a tool used to summarise past credit behaviour, not a prediction of future borrowing outcomes. Understanding how credit scores are calculated can help individuals better understand the options that may be presented to them and how different financial products are assessed.   

Person 1: Excellent Credit Score Person 2: Lower Credit Score
May have access to a wider range of mortgage and loan products May have fewer products available to choose from
Often considered for more competitive interest rates May be offered higher interest rates
Applications may be processed more smoothly Applications may require additional checks or conditions
More flexibility across financial and service agreements Less flexibility or stricter terms on agreements
Lower likelihood of needing higher deposits in some cases Higher deposits may be requested in some situations

Understanding what impacts a credit score

Key factors that can influence a credit score include:

  • Payment history – records for making payments on time, consistently.
  • Credit utilisation – many credit reference agencies note that using 30% or less of the available limit is often viewed in a positive way. Only a guideline rather then a fixed rule. 
  • Credit activity and account activity – A longer and well maintained account history can provide more information for an assessment. 
  • Recent applications – Too many applications within a short period of time can indicate increased borrowing activity.
  • Closed accounts – Despite closing an account, they may still appear on a credit report. 
  • Accuracy of information – credit scores rely on information being accurate, errors or outdated information can affect how credit activity is represented.  

These factors are usually considered together to build an overall picture of past borrowing behaviour, rather then being checked individually on their own. 

Frequently asked questions

Does checking your credit score affect it?

Checking your own credit score does not affect it. However, when an organisation reviews a credit report as part of a formal application , this may involve a “hard check” which may get recorded on the credit file. 

Yes, different credit reference agencies use their own scoring systems. For example, your score with Equifax could be different to your score TransUnion. These differences are normal, and are based on how each agency analyses the same credit information. 

No, a credit report is a detailed record of credit activity, while a credit score is a numerical summary using the information in that report. 

Credit scores are based off of past credit activity that’s recorded on a credit report. Your income, savings, or employment status are not included. 

Missed or late payments may be recorded on a credit report and can influence a credit score. The impact varies depending on factors such as how late the payment was and overall credit history. 

Yes, credit scores can be based on different types of credit, such as a personal loan. 

Joint credit accounts are usually reported on both peoples credit reports. 

A credit score can change whenever new information gets added to a credit report. This could be after a payment is recorded, balance updates, or opening a new account.

 
Understanding your credit score can help provide greater insight into the range of options that may be available when exploring credit. In some cases, this can influence both access to products and the terms offered. However, knowing how credit scores and credit reports work is only part of the picture. Different borrowing methods are designed for different purposes and understanding how they vary can be just as important. For example, borrowing options used for everyday spending may be structured differently from those typically used for larger purchases.
 

Visit the different borrowing methods page below