How to improve your credit score for a mortgage
If you're hoping to buy a home, your credit history is one of the first things a lender looks at. The good news? A lot of what shapes it comes down to steady, everyday habits, and I'll walk you through them in plain English.
What lenders actually mean by a "credit score"
Here's a thing that trips a lot of people up: there isn't one single, official credit score in the UK. Each of the three main credit reference agencies, Experian, Equifax and TransUnion, works out its own number using its own scale, so you might see three different figures for the same you.
Mortgage lenders don't just take one of those numbers and wave you through, either. They pull your credit report (the detailed history behind the score) and run it through their own scoring, alongside your income, spending and deposit. So the score you see is a useful health check, but it's the underlying report, and the full picture, that a lender is really reading.
Think of the score as the headline and the report as the full story. Both are worth understanding before you apply.
What tends to help your credit look healthier
Lenders are looking for evidence that you handle credit reliably over time. A few habits commonly make a difference:
- Pay on time, every time. Payment history is one of the biggest factors. Setting up direct debits so you never miss a bill is one of the simplest wins.
- Keep your balances well below your limits. Using a large chunk of your available credit can weigh on your score. As a rule, lower usage tends to look better than being close to maxed out.
- Register to vote. Being on the electoral roll at your current address helps lenders confirm who you are and where you live.
- Keep older accounts open. A longer track record generally helps, so closing a card you've had for years isn't always the win it feels like.
- Space out applications. Lots of credit applications in a short window can be a red flag. Spreading them out is usually gentler on your file.
None of these are magic buttons, and I can't promise any particular outcome, but together they build the kind of steady picture lenders like to see.
Check your report and fix the errors
Before you do anything else, it's genuinely worth reading your own credit report, because mistakes are more common than you'd think. You can request your report from each of the three agencies, and there are free ways to see the information they hold.
When you look, keep an eye out for:
- Accounts, addresses or names you don't recognise (which can be a sign of fraud, or just a mix-up)
- Debts marked as unpaid that you've actually settled
- Financial links to an ex-partner or former housemate you no longer share money with, which you can ask to have separated
If something's wrong, you have the right to raise it with the credit reference agency to get it investigated and corrected. Tidying up genuine errors is one of the fairest ways to help your file reflect the real you.
How long building your credit tends to take
I'll be honest with you: there's no overnight fix, and anyone promising one is worth a raised eyebrow. Credit is built on patterns over time, so the effect of good habits usually shows up over weeks and months rather than days.
Some things can update relatively quickly, like getting onto the electoral roll or correcting an obvious error. Others, like showing a run of on-time payments or letting a past missed payment age, take longer to work through. Missed payments and defaults stay on your report for a number of years, though their impact tends to fade as they get older and newer, better history builds up around them.
The practical takeaway: if a mortgage is on your horizon, it's worth starting sooner rather than later, so your file has time to reflect your best habits.
Where an adviser fits in
Here's something people often don't realise: your credit report isn't the whole game. Different lenders have very different appetites, and one may be relaxed about something that another treats as a deal-breaker. So a report that one lender frowns at, another might be perfectly comfortable with.
That's exactly where a good mortgage adviser earns their keep. A whole-of-market adviser can look at your real situation and know which lenders tend to be a better fit for it, rather than you applying blind and risking a knock-back that leaves a footprint on your file. They can also tell you honestly whether it's worth waiting a while to strengthen things first.
My job is to help you understand the basics so none of this feels like a foreign language. The actual advice, and the market search, is theirs to do.
The honest bit
I can explain how credit works and what tends to help, but I don't give advice or know which lender suits you. A qualified, whole-of-market adviser does that, they're usually paid by the lender rather than by you, there's no fee from me, and there's no obligation to go ahead.
Common questions
Will checking my own credit report hurt my score?
No. Checking your own report is what's called a soft search, and it's only visible to you, so it doesn't affect your score or what lenders see. It's a good habit to get into before a mortgage application. Hard searches, the kind lenders run when you actually apply for credit, are the ones that leave a footprint on your file.
Can I get a mortgage with a low credit score or past problems?
It's genuinely possible for some people, but I can't promise eligibility, and it depends on your full circumstances and which lender you approach. Lenders vary a lot in what they'll accept, and some specialise in situations that others turn away. This is a good example of where a whole-of-market adviser can help, by matching your real situation to lenders more likely to be comfortable with it, rather than you applying on a hunch.
Does having no credit history at all count against me?
It can make things trickier, because a lender has less evidence of how you handle credit, though it's not the same as having a poor history. Steady habits like being on the electoral roll, paying regular bills on time and using a small amount of credit responsibly can help build a track record over time. An adviser can talk you through what tends to matter most for your situation.
Should I pay off all my debts before applying for a mortgage?
I can't tell you what you should do, that's a personal decision and one for a qualified adviser who knows your full picture. What I can say generally is that it isn't always a simple case of clearing everything: lenders look at how you manage credit as well as how much you owe, and keeping some money aside for a deposit and costs matters too. It's a genuine trade-off, and worth talking through with an adviser.
Want to know where you really stand?
If you'd like a real person to look at your situation, I can introduce you to a qualified, whole-of-market mortgage adviser, for free. They'll search the market, explain your options honestly, and there's usually no cost to you because they're typically paid by the lender. No pressure, no obligation, and you decide what happens next.
Find my best deal →Your home may be repossessed if you do not keep up repayments on a mortgage or any other debt secured against it. This guide is general information, not advice.