The Importance of Credit Scores

Last updated: 19 October 2026

Your credit score matters because lenders use the information behind it to decide whether to lend to you and at what rate. It can affect mortgages, loans, credit cards and even renting. Paying on time, keeping credit use low, limiting applications and checking your free credit report all help keep it healthy.

Your credit score plays a crucial role in your life, impacting major financial decisions. Understanding what can affect it is essential, because it touches everything from applying for a mortgage to seeking a personal loan or even renting a property. A good credit record can open doors to better interest rates and favourable financial opportunities, making it essential for your financial planning.

As a provider of both financial wellbeing benefits and financial services, we can’t stress enough how important financial education is. It shapes not only the decisions you make but also how you feel about money overall. One area many people remain unsure about is credit scores, so we’re here to shine a light on it.

How do credit scores work in the UK?

There isn’t one single credit score. Citizens Advice explains that each lender uses its own system to score your application, and if your score is below its threshold, it may refuse to lend or charge you more. Different lenders work differently, so a refusal from one doesn’t always mean a refusal from others.

Lenders base their decisions partly on your credit reference file. The three main credit reference agencies in the UK are Equifax, Experian and TransUnion, and they hold information about how you have managed credit and utility accounts, plus public records such as the electoral roll and county court judgments.

What affects your credit score?

Payment history

The most important thing you can do is pay on time. Late or missed payments show on your file, and lenders view them as a risk, which can make borrowing harder or more expensive in future. Yet in 2023 research by TransUnion, 57% of young people aged 18 to 24 were unaware that late or missed bill payments can have a negative impact on their credit score.

Credit utilisation

Managing your credit limits effectively is also key. Even if you always pay on time, using a high proportion of your available credit can count against you, because lenders may see it as a sign of financial strain. In the same TransUnion research, fewer than a third (32%) of young adults knew this.

Length of credit history

The length of time you’ve had credit also plays a part. A longer, well-managed history gives lenders more to go on. According to Citizens Advice, information is usually held on your file for six years, and some information can be held for longer.

Types of credit

Credit agreements such as credit cards and loans, and accounts such as utilities, can all appear on your file. Managing different commitments well shows lenders you can handle your responsibilities.

Credit applications

Too many applications for credit in a short period can weaken your score, because lenders may see frequent applications as a sign of financial difficulty. TransUnion’s 2023 research found that 64% of Gen Z didn’t realise this. Your file shows which organisations have searched it in the last 12 months, Citizens Advice says. Being mindful of this is an essential part of maintaining good financial wellbeing.

How can I improve my credit score?

Small steps make a difference over time:

1. Check your credit reports. You have the right to a free statutory credit report. Lenders don’t have to report to all three agencies, so the ICO notes you may need a copy from each.
2. Correct any mistakes. If something on your file is wrong, write to the credit reference agency and ask for it to be changed. You can also add a notice of correction to explain your circumstances. Citizens Advice says correcting anything that is wrong may improve your score.
3. Register to vote at your current address. The electoral roll is one of the records credit reference agencies hold, and their information is also used to verify your identity.
4. Pay every bill on time. Setting up direct debits for at least the minimum payment helps.
5. Keep your credit use low. Try not to use most of your available limit.
6. Space out applications. Check your eligibility before you apply, and avoid several applications close together.

How do I check my credit report for free?

The Information Commissioner’s Office says you can ask any of the three agencies for a copy of the information they hold about you, free of charge. Look for the phrase “statutory report” on their websites. You don’t have to sign up to a paid subscription to see your own file.

Does my credit score affect getting a mortgage?

Yes. Mortgage lenders look closely at your credit history, as well as your income, outgoings and deposit. A clean, up-to-date file can widen your choice of lenders and rates. If you’re planning to buy or remortgage, our mortgage advisers can talk you through what lenders look for. Your home may be repossessed if you do not keep up repayments on your mortgage.

What if debt is affecting my credit score?

If you are struggling with repayments, get help early, before missed payments build up. Free, confidential debt advice is available from StepChange (0800 138 1111, freephone), Citizens Advice and MoneyHelper, which is backed by government.

Frequently asked questions

Why is my credit score important?

Lenders use your credit information to decide whether to lend to you and at what rate. A good record can mean more choice and lower costs on mortgages, loans and credit cards.

How long do missed payments stay on my credit file?

Information is usually held for six years, according to Citizens Advice.

Is there one official UK credit score?

No. Different lenders use different systems to work out your score, and lenders don’t have to report to all three credit reference agencies.

Can I check my credit report for free?

Yes. Each agency must give you your statutory credit report free of charge if you ask for it.

Take control of your financial future

Understanding your credit score is essential for good financial health and effective financial planning. By prioritising on-time payments, managing your credit use and knowing how different factors affect your score, you can take practical steps to improve your creditworthiness.

By staying informed and managing credit responsibly, you can take control of your financial future with confidence. If you have any concerns, get in touch with a member of our team or book a free chat with one of our coaches.

Written by Ione Morton, Marketing Executive at Lifetime

This article is general information, not personal financial advice. Lifetime is authorised and regulated by the Financial Conduct Authority (FRN 225795).