An arranged overdraft on its own does not damage your credit score, and using one lightly can even help by showing you handle borrowing responsibly. The picture changes fast if you sit near your limit, tip into an unauthorised overdraft, miss repayments, or let the account default. So the honest answer to does an overdraft affect your credit score is yes, but the direction depends almost entirely on how you use it.
What Lenders See on Your Credit File
UK banks share overdraft information with Experian, Equifax, and TransUnion.1Citizens Advice. How Lenders Decide Whether to Give You Credit Once your bank grants an overdraft, it appears on your credit file as an open credit account, with the agreed limit, the date the facility was opened, and your current balance. That entry stays visible for as long as the account is open, even in months when you never use the overdraft. After the account closes, the record remains on file for six years before dropping off.2Experian. Credit Reference Data Retention Periods
Other lenders can see this facility when they check your file, and they treat the agreed limit as credit you could draw on at any time.
Credit Utilisation Is What Moves the Score
Credit utilisation is the percentage of your overdraft limit you are actually using. If your limit is £1,000 and you are £700 overdrawn, your utilisation is 70 percent. Scoring models read high utilisation as a sign you are financially stretched, and it drags your score down. Keeping utilisation below roughly 30 percent is widely recommended.
The strongest signal is staying at or near zero, dipping into the overdraft only occasionally and clearing it quickly. That reads to lenders as a safety net rather than a lifeline.3Experian. How Does an Overdraft Affect Your Credit Score Banks update balances with the credit reference agencies roughly every four to six weeks, so improvements do show up on your file within a short window.4Equifax UK. Why Is It Important to Keep Your Credit Report up to Date
Unauthorised Overdrafts, Late Markers, and Defaults
Going beyond your agreed limit breaches the terms of the account. Your bank can then report the shortfall to the credit reference agencies as a missed or late payment marker. A single marker stays on your file for six years and carries the same weight as missing a payment on a credit card or loan.5Experian. Late Payments – How They Impact Your Credit Score Repeated unarranged overdraft use is particularly damaging because it suggests a pattern of spending beyond your means.3Experian. How Does an Overdraft Affect Your Credit Score
A default is the most serious entry an overdraft can produce. It happens when the bank decides the lending relationship has broken down, typically after several months overdrawn with no sign of repayment. Before recording a default, the bank must send a formal default notice giving you at least 14 days to bring the account back within its limit or agree a repayment arrangement.6Citizens Advice. If You’re Struggling With Your Overdraft Once registered, the default remains on your credit file for six years from the date it was recorded.7TransUnion UK. How Long Does Information Stay on My Credit Report For Through that period, most mainstream lenders will either reject applications outright or offer noticeably worse terms. The bank may also close the account and pass the debt to a collection agency. You can still negotiate a repayment plan at that stage; it will not remove the default, but it shows future lenders you engaged with the debt.
Applying for or Increasing an Overdraft
A new overdraft or a request to raise an existing limit usually triggers a hard search on your credit file. Other lenders can see it, and it stays visible for two years.7TransUnion UK. How Long Does Information Stay on My Credit Report For One hard search usually causes a small, temporary dip. Several in a short period look worse, because they suggest you are urgently chasing credit.
Many banks offer eligibility checkers that run a soft search first, giving you an indication of approval without leaving a mark that other lenders can see.3Experian. How Does an Overdraft Affect Your Credit Score The hard search only happens once you commit to a formal application, so using eligibility checkers first helps you avoid stacking up hard searches.
A Large Unused Overdraft: Not Your Score, But Your Affordability
Having a big overdraft you never touch will not directly lower your credit score. It can still count against you in an affordability assessment, which lenders run alongside the score. Affordability looks at income, outgoings, and total credit available to you, including unused overdraft facilities. A lender may worry you could draw on that limit at any moment and overstretch yourself.
If your limit is much larger than you need, it is worth asking your bank to reduce it before applying for a mortgage or other significant borrowing. A smaller facility removes that concern from the calculation.
Overdrafts and Mortgage Applications
Mortgage lenders look at your finances more closely than almost any other lender. You will normally have to provide three months of bank statements, so regular overdraft use will be visible.3Experian. How Does an Overdraft Affect Your Credit Score Any outstanding overdraft balance also feeds into your overall unsecured debt for affordability purposes.
Sitting close to your limit, rarely clearing it, or slipping into an unauthorised overdraft suggests day-to-day spending is not under control. Every mortgage lender applies its own criteria, but persistent overdraft use can shape their decision if it looks like you would struggle with mortgage payments on top of existing commitments.3Experian. How Does an Overdraft Affect Your Credit Score If a mortgage is on the horizon, aim to clear or significantly reduce your overdraft balance in the months beforehand.
Joint Accounts Create a Financial Association
Opening a joint bank account, including one with an overdraft, creates a financial association between you and the other account holder on both of your credit files.8Experian. Financial Association – What to Know About Shared Finances You each keep separate credit reports, but lenders can see the link and may take your associate’s credit history into account when assessing you. If they have a poor record or mishandle the joint overdraft, that can flow through to you.
Closing the account does not automatically remove the link. You have to apply for a financial disassociation with each credit reference agency to get it taken off your file.9Experian. Add a Disassociation Until you do, the old association stays visible to lenders.
If Your Overdraft Is Becoming a Problem
The Financial Conduct Authority expects banks to step in when customers rely heavily on their overdraft. If you are frequently overdrawn, your bank should contact you to discuss reducing your dependence. That can mean waiving or reducing interest, offering a structured repayment plan, or converting the balance into a personal loan at a lower rate.6Citizens Advice. If You’re Struggling With Your Overdraft You can also ask them to lower your limit gradually, for example by a set amount each month, so you come off the facility over time.
If the overdraft is part of a wider financial crisis, you may qualify for the government’s Breathing Space scheme. Overdrafts count as a qualifying debt.10GOV.UK. Debt Respite Scheme (Breathing Space) Guidance for Creditors A standard breathing space runs for up to 60 days, during which your bank must pause enforcement action, stop chasing you for repayment, and freeze most interest and charges. A mental health crisis breathing space lasts for the duration of treatment plus 30 days.
You cannot apply directly. A debt adviser, such as one from Citizens Advice or StepChange, assesses your situation and submits the application. During the protected period you are expected to engage with debt advice and work toward a longer-term solution. Breathing space does not wipe out the debt or clear existing marks from your credit file, but it buys time to act before the damage deepens.