How to Improve Your Credit Score: 10 Things That Actually Work
Most advice on improving your credit score is either vague ("be responsible!") or impossible ("just pay everything in cash forever"). Neither is much help when you're trying to get accepted for a mortgage next year.
So let's get specific. Below are ten things that genuinely move the needle, ranked roughly in order of impact. Some take a few weeks. Some take longer. But every one of them works.
Start with the basics
Before you do anything else, get a clear picture of where you actually stand. You can't improve a score you haven't looked at.
Sign up for a free credit report with each of the three UK credit reference agencies — Experian, ClearScore (which shows your Equifax data), and Credit Karma (which shows your TransUnion data). It's free, it takes about ten minutes, and it costs you nothing. Our guide to checking your credit score for free walks through exactly how to do it.
Look for three things: anything that's wrong, anything that surprises you, and anything that's hurting your score that you can fix. Most people find at least one of these on their first look. If you've never read a credit report before, our guide to what a credit score is covers the fundamentals.
Register on the electoral roll
This is the single easiest credit-score win in the UK, and an absolutely staggering number of people miss it.
Lenders use the electoral roll to confirm your identity and address. If you're not on it, you look harder to verify — and that lowers your score. The fix takes about five minutes at gov.uk/register-to-vote. You don't have to vote. You just need to be registered.
If you've moved house recently, register at your new address as soon as you can. Most people see the change reflected on their credit file within a month or two.
Pay everything on time (every time)
If you only do one thing on this list, do this one.
Payment history is the biggest single factor in your credit score. One late payment can knock your score by 50 to 100 points overnight. A missed payment (over 30 days late) hurts more. A default can hurt for six years.
The trick isn't really about discipline — it's about systems. Set up direct debits for the minimum payment on every credit card, loan and bill you have. That way you can't accidentally miss one because you were on holiday or just had a bad week. You can still pay more than the minimum (and you absolutely should), but the direct debit is your safety net.
One easy mistake: lots of people set up a direct debit for the full balance on a credit card, then run into trouble if the balance is unexpectedly high one month. A direct debit for the minimum is the safer option — you can always pay more by manual transfer.
Reduce your credit utilisation
Credit utilisation is the percentage of your available credit you're using. It's the second-biggest factor in your score, after payment history. And — unlike most things on your credit file — it can change overnight.
If you've got a credit card limit of £5,000 and a balance of £4,000, your utilisation is 80%. Lenders see that as a red flag, even if you're paying on time. The fix is simple: pay it down. Below 30% is the rule of thumb. Below 10% is even better.
You can use our credit card repayment calculator to work out how long it'll take to bring a balance down at different payment levels — it's eye-opening. Even small extra monthly payments can dramatically shorten the timeline.
There's also a sneakier fix: ask for a credit limit increase. If your lender agrees, your utilisation drops instantly without you paying off a penny. (Most lenders do this with a soft search if you're a long-standing customer, so it doesn't hurt your score to ask.) Our guide on credit utilisation goes deeper into the maths.
Don't apply for too much credit at once
Every formal credit application leaves a hard search on your file. One or two? Fine. A flurry in a short space of time? That's a problem.
Lenders see lots of recent applications as a sign of financial stress. Even if you're rejected, the application still shows up — and rejections can mean other lenders are less willing to say yes.
Before you apply for anything important, use a soft-search eligibility checker. These show you how likely you are to be accepted without leaving a footprint on your file. Our guide on soft vs hard credit searches explains the difference in detail and lists which lenders' checkers are reliable.
If you're rate-shopping for something big like a mortgage or car finance, try to keep the applications inside a tight window of a few weeks. Multiple applications close together for the same product are sometimes grouped and treated as one — though this varies by lender.
Keep old accounts open
This one feels counter-intuitive. You've finally paid off that old credit card you haven't used in years — surely closing it cleans things up?
Probably not. Closing an old card shortens your average credit history, and it cuts your total available credit (which pushes utilisation up on the cards you still use). Both nudge your score downwards.
If the card has no annual fee, the best move is usually to leave it open and put one small purchase on it every few months — a streaming subscription, say — paid off in full. That keeps it "active" on your file without giving you a big balance to manage.
The only time it's clearly worth closing is when the card has a hefty annual fee you're no longer earning back in rewards. Even then, expect a small temporary dip in your score afterwards.
Check your credit report for errors
Mistakes on credit files are more common than people realise. Wrong addresses. Old accounts that should have dropped off. Defaults you've already settled. Even straightforward identity mix-ups where someone with a similar name has muddied your file.
Look for:
- Addresses you've never lived at
- Accounts that aren't yours
- Settled debts still showing as outstanding
- Late payments you genuinely paid on time
- Defaults older than six years that haven't dropped off
If you spot something wrong, dispute it directly with the credit reference agency. They have a legal duty to investigate within 28 days. If the disputed item is wrong, they'll correct it — and your score can jump significantly. This is one of the few cases where the score change can be both fast and large.
Build credit if you have none
Strange as it sounds, having no credit history can be almost as challenging as having a poor one. Lenders have no evidence to work with — sometimes called a "thin file" — so they default to caution. This is common for young adults, recent arrivals to the UK and people who've always paid in cash.
The standard starting point is a credit builder card. These cards are designed for people with thin or damaged files: low limits, higher APRs, easy approval. The way to use them is the same way you'd use any credit card responsibly:
- Spend a small amount each month (maybe £20–£50)
- Pay the balance off in full each month
- Never miss a payment
- Stick at it for at least six months
Do that and your score should rise meaningfully. The higher APR doesn't matter — you're paying in full each month, so you never pay interest. After six to twelve months of clean use, you'll start qualifying for better cards and loans.
If you're using credit to bridge regular spending, that's a different problem. Our loan repayment calculator can help you understand what borrowing actually costs over time.
How long will it take?
Honest answer? It depends on where you're starting from. But here's a realistic rough timeline:
- One month: Registering on the electoral roll and correcting clear errors. Quick wins.
- One to three months: Paying down high-balance credit cards. Utilisation drops show up at the next reporting cycle.
- Three to six months: A steady run of on-time payments starts to build positive history.
- Six to twelve months: A credit-builder card used responsibly can lift a thin or poor score meaningfully.
- Two to three years: Old missed payments and defaults start to lose weight as they age.
- Six years: Most negative marks (defaults, CCJs, bankruptcies) drop off your file entirely.
The key thing to remember: you don't have to fix everything to see improvement. Even a few of these changes can move you from "fair" to "good" within a year.
What to do next
If you do nothing else after reading this, do three things:
- Register on the electoral roll (if you're not already).
- Check all three of your credit reports for errors.
- Pay down your highest-utilisation card.
Those three steps alone, done in the next couple of weeks, should produce a visible score improvement within a month or two. From there, the rest is just patience: pay on time, keep utilisation low, don't apply for credit you don't need, and let time do the slow work.
If your goal is something specific — a mortgage, a car loan, a credit card — use our loan repayment calculator to model out what you'd actually pay at different rates. A better score doesn't just mean acceptance. It means a better deal.
Frequently asked questions
Can I improve my credit score quickly?
Yes — some changes can produce a visible jump within four to six weeks. Registering on the electoral roll, paying down a maxed-out credit card and correcting an error on your file are the three fastest wins. Bigger structural fixes (rebuilding after defaults, ageing up a thin file) take longer — usually six months to several years — but the early gains can be significant.
Will paying off all my debts boost my credit score?
It usually helps, but the effect is often smaller than people expect. Lenders like to see that you can manage credit responsibly, not just that you have none. Paying down high-balance cards (lowering utilisation) helps a lot. Clearing a long-running, well-managed loan helps less, and can actually shorten your credit history. The right approach is usually to reduce balances, not eliminate every account.
Does my income affect my credit score?
Your salary isn't on your credit file and doesn't directly affect your score. But income does affect lender decisions: even with a great score, a lender who thinks you can't afford the repayments will still say no. Affordability and credit score are two separate checks that both need to pass.
Should I pay a credit repair company to fix my score?
Honestly, no. There's nothing a credit repair company can do that you can't do yourself for free — and a lot of what they promise (removing accurate negative information, for example) isn't actually possible. If something on your file is wrong, you can dispute it directly with the credit reference agency at no cost. Save your money.
Does closing a credit card hurt my score?
It can, in two ways. Closing an old card shortens your average account age, which slightly weakens your credit history. And it reduces your total available credit, which pushes your utilisation up on whatever cards remain. If a card has no fee, leaving it open and using it occasionally is usually a better move.