What is a credit score: A simple guide
24 April 2026
Whether you are looking to rent a new apartment, switch your energy provider, or you’re preparing to buy a house, your credit score plays a starring role in your financial journey.
However, for many, that three-digit number feels like a mystery. So, what does it actually represent? And more importantly, how can you make it work for you?
In this guide, we’ll break down everything you need to know about credit scores and cut through the jargon.
In this section:
- What is a credit score?
- How do I check my credit score?
- What is a good credit score to have?
- Credit scores and major life goals
- How to improve your credit score
- Common credit score myths
What is a credit score?
At its simplest, a credit score is a number that represents how trustworthy you appear to lenders.
When you apply for a credit card, a loan, or a mortgage, the company needs to decide if you are likely to pay them back on time. They look at your credit report, a detailed history of your borrowing and repayments, and use that data to calculate a score.
Think of it as a financial CV where a higher score tells lenders you have a proven track record of managing money well. A lower score might suggest you’ve had some bumps in the road, which makes lenders more cautious about offering you the best rates.
It’s important to remember that you don't have one official score. Different companies use different data and formulas, so your score can change depending on who’s doing the calculating.
How do I check my credit score?
If you’re wondering, “how do I check my credit score?” the good news is that it’s easier (and cheaper) than ever.
In the UK, there are three main credit reference agencies (CRAs): Experian, Equifax, and TransUnion. These agencies collect data from banks, utility companies, courts, and the electoral roll to build your financial profile.
You can check your score for free using various services that partner with these agencies:
· ClearScore: Provides your Equifax score and report
· Experian: Offers a free basic account to see your Experian score
· Credit Karma: Provides access to your TransUnion score
· MoneySuperMarket (Monitor): Often provides a look at your TransUnion data
Many UK bank apps (e.g., Lloyds, NatWest) now also offer in-app credit score checks.
Checking your own score is known as a soft search. This means it does not impact your rating at all, no matter how often you do it. In fact, checking it regularly, around once a month, is a great habit to catch any errors or potential fraudulent activity early.
What is a good credit score to have?
Because the three agencies use different scales, there isn't one perfect number that applies everywhere. However, they each categorise scores into bands to help you understand where you stand.
When considering what’s a good credit score to have, it’s generally one that sits in the "Good," "Very Good," or "Excellent" tiers. Here’s how the agencies break down their numbers:
Experian (Score range: 0–999)
· Very Poor: 0–560
· Poor: 561–720
· Fair: 721–880
· Good: 881–960
· Excellent: 961–999
Equifax (Score range: 0–1000)
Equifax recently updated their scoring system to a 1000-point scale.
· Poor: 0–438
· Fair: 439–530
· Good: 531–670
· Very Good: 671–810
· Excellent: 811–1000
TransUnion (Score range: 0–710)
· Very Poor: 0–550
· Poor: 551–565
· Fair: 566–603
· Good: 604–627
· Excellent: 628–710
The higher your score, the more likely you are to be accepted for financial products with lower interest rates. This can save you thousands of pounds over your lifetime, particularly on long-term commitments like mortgages.
Credit scores and major life goals
Your credit score isn't just about credit cards; it’s a key to unlocking major life milestones such as:
Renting a home
Landlords and letting agents often run credit checks before approving a tenancy. They aren't looking for a perfect score, but they want to see that you pay your bills on time. A low score could lead to a landlord asking for a larger deposit or a guarantor (someone who promises to pay the rent if you can't).
Utilities and Mobile Phones
When you want to switch to a cheaper energy tariff or get the latest smartphone on a monthly contract, you are technically entering a credit agreement. Companies will check your file to ensure you aren't a high-risk customer.
Buying a home
If you are wondering what a good credit score is to buy a house, there is no set minimum. Every mortgage lender has its own internal "pass mark" and criteria.
However, a higher score usually gives you access to a wider range of mortgage deals and significantly lower interest rates. If your score is low, you might be limited to specialist lenders who charge higher interest rates because they perceive more risk.
If you're currently weighing up your options, it's worth considering when is the best time to buy for your specific financial situation.
How to improve your credit score
If your score isn't where you want it to be, don't worry. It isn't permanent. Knowing how to improve your credit score is about making small, consistent changes that build trust over time.
1. Register for the electoral roll
This is the quickest and simplest way to boost your score. It confirms your identity and address to lenders. If you aren't a UK or EU citizen and cannot vote, you can add a notice of correction to your report explaining this.
2. Pay on time, every time
Missing a single payment can stay on your report for six years. Even a late payment can cause your score to dip. Set up Direct Debits for all your regular bills, from credit cards to water rates, to ensure you're never late.
3. Keep credit utilisation low
This refers to how much of your available credit you actually use. Lenders prefer to see that you have credit available but aren't relying on it too heavily. Try to keep your balance below 30% of your limit. For example, if you have a £2,000 limit on a card, try to keep the balance under £600.
4. Check for errors
Check your report for incorrect addresses, misspelled names, or accounts you don't recognise. Even a small typo in a house number can lead to a failed credit check. If you find an error, contact the provider or the CRA to have it corrected.
5. Be mindful of application frequency
Every time you make a formal application for credit, it leaves a hard search on your file. If you apply for several things in a short window, it can signal to lenders that you are experiencing financial pressure. Try to use eligibility checkers before applying; these use soft searches that don't affect your score.
Common credit score myths
To truly master your credit, it helps to clear up some common misconceptions:
· "There is a credit blacklist": There is no such thing. Lenders don't share a list of "bad" People. Each lender makes its own decision based on its own rules.
· "Previous tenants affect my score": Credit scores are based on individuals, not addresses. The only way someone else's credit affects yours is if you have a joint financial product (like a joint bank account or mortgage)
· "I don't have any debt, so my score must be great": This is a common trap. If you have never borrowed money, lenders have no data to judge you on
Final thoughts
Understanding your credit score is the first step toward taking control of your financial future. It isn't just a random number; it’s a reflection of your financial habits.
By checking your score regularly and following the steps to improve it, you’ll be in a much stronger position when it’s needed. It takes patience, scores usually update once a month, but the long-term benefits of a healthy score are well worth the effort.
Ready to start your journey to homeownership? We recommend our Preparing to buy a house checklist before you take your next steps.