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How to improve your credit score if you want to get a mortgage

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Written by  Esther Shaw
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Reviewed by  Jonathan Leggett
5 min read
Updated: 10 Sep 2025

Set on buying a home, but worried about a low credit rating? Here’s what you can do.

First time buyers have been given something to smile about with the news that the mortgage guarantee scheme has been extended to 2025.

We take a look at what the guarantee entails and what it means for would-be homebuyers...

What does the mortgage guarantee scheme involve?

Due to run until June 2025, the scheme involves the government effectively providing a guarantee on mortgages at 95% LTV. This means lenders won’t face the risk if a borrower can’t meet their repayments, or should property prices fall.

Under the scheme, 95% mortgages are offered on houses costing up to £600,000. While it’s not limited to first-timers, it’s likely to be most popular with those trying to get a foot on the first rung of the property ladder.

Lots of mainstream lenders, including Lloyds, NatWest, Santander, Barclays, HSBC and Virgin Money, are signed up to the scheme.

row of houses

What’s the issue with 5% mortgages?

As low-deposit deals involve banks lending at a very high LTV, there are concerns that buyers could over-stretch themselves.

That said, aspiring homeowners will still be required to meet strict lending criteria to qualify.

With this in mind, having a 5% deposit is unlikely to be enough, on its own, to secure the home loan. You will still need to prove you can comfortably afford the monthly repayments.

To check if the mortgage is affordable, it’s likely that lenders will want to scrutinise details such as the size of the mortgage you want to take out, your employment status and income, your monthly outgoings, your existing debts – and also your credit rating.

A poor credit rating could be a problem

While getting accepted for a mortgage shouldn’t be a problem for borrowers with a healthy credit score, it could be more of an issue for those at the other end of the scale.

If a lender looks at your credit rating and sees it isn’t up to scratch, you may only get offered deals at a lower LTV – meaning a bigger deposit will be required.

Equally, if your score is particularly poor, you risk your mortgage application being rejected altogether.

Take steps to improve your credit score

The good news is, there are some simple steps you can take to boost your score and make yourself as attractive as possible to potential lenders.

Make use of our Credit Score tool

As a first step, check out Credit Score. By signing up, you can get a copy of your credit score and report for free.

We’ll send you regular updates of how your score is doing and free tips to help you grow it. We’ll also keep an eye on your file and alert you about any activity that could be suspicious

What does my score mean?

Each credit reference agency has its own scoring system. With Credit Score you’ll get a score out of 710.

Anything between 551 and 565 is considered ‘poor,’ while anything below 550 is considered ‘bad.’

For higher scorers, anything between 566 and 603 is considered ‘fair,’ between 604 and 627 is ‘good,’ and anything above 628 is ‘excellent.’

What can I do to build my score?

  • Get any errors on your credit report corrected

  • Get registered on the electoral roll. You can register on the electoral roll for free

  • Be disciplined about always paying credit card bills – and other outgoings, such as utility bills – on time each month. Missing just one payment can make all the difference between getting accepted (or turned down) for a mortgage

  • Make sure you stay within your credit limits

  • Close down any accounts you are no longer using

  • Reduce the amount you owe on credit cards, personal loans, and other debts

  • Avoid making multiple applications for credit in a short space of time, as you risk leaving lots of ‘marks’ on your credit file – and this could damage your credit score. Make use of our eligibility tool to find out which deals you are most likely to get accepted for

  • Try not to apply for credit for a few months prior to applying for a mortgage, as this could hinder your chances of getting accepted

Be patient

While it will take time to boost your score, by following the tips we’ve suggested, you can get your credit rating in the right shape to apply for a mortgage, meaning you will become eligible for a wider selection of offers.

Hopefully, this will include 5% deals available via the Mortgage Guarantee Scheme, as well as options from lenders offering other low-deposit deals outside of the government-backed scheme.

To find out more about 95% mortgages and compare mortgage deals more generally, head here.

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Esther Shaw

Money expert

Esther Shaw is a freelance journalist who has written for MoneySuperMarket on all things money from budgeting to mortgage interest rates. She is an award-winning personal finance journalist, writing...

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Jonathan Leggett

Former Senior Content Editor

With over 15 years of experience in online content and journalism, Jonathan is a former MoneySuperMarket’s editor at large and works across our Broadband, Mobiles, Energy and Money channels. Along...

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