Banking

Overdraft Guide UK — How They Work, Costs + Alternatives

How bank overdrafts work in the UK. Interest rates, arranged vs unarranged, how to get one, alternatives, and how to reduce overdraft debt.

An overdraft allows you to spend more than you have in your current account — essentially short-term borrowing from your bank. While convenient, overdrafts can be expensive if used regularly. Understanding how they work helps you use them wisely or avoid them altogether.

How Overdrafts Work

FeatureDetail
What it isPermission to go into a negative balance
How it is repaidAutomatically when money comes in
InterestCharged daily on the overdrawn balance
Typical rate35–40% EAR (around 3%/month)
Credit checkRequired to arrange
Impact on credit fileReported monthly; heavy use can affect score

Types of Overdraft

TypeDetailCost
Arranged (authorised)Pre-agreed limit with your bankInterest only (no extra fees since 2020)
Unarranged (unauthorised)Going overdrawn without permission OR exceeding your limitSame interest rate as arranged (since 2020) but refused payments may incur fees
Interest-free bufferFirst £0–£500 with no interest (varies by bank)Free

Overdraft Costs Compared

Interest Rates by Bank

BankEARMonthly Cost on £1,000
First Direct39.9%~£33
Monzo39.9%~£33
Starling15–35%£12–£29
HSBC39.9%~£33
NatWest39.49%~£33
Nationwide39.9%~£33
Lloyds39.9%~£33

Interest-Free Buffers

BankInterest-Free Amount
First Direct£250
M&S Bank£100
Nationwide FlexDirectNone (but competitive rate)
StarlingNone
MonzoNone

How to Get an Overdraft

StepDetail
1Check if your current account offers overdrafts
2Apply online, via app, or in branch
3Bank runs credit check
4If approved, limit is set (£100–£10,000+ depending on circumstances)
5Overdraft is available immediately

What Banks Consider

FactorImpact
Credit scoreHigher score = higher limit
IncomeRegular income helps
Account historyGood management with this bank helps
Existing debtMay reduce what is offered
Previous overdraft useGood history helps

Overdraft vs Other Borrowing

FeatureOverdraftCredit CardPersonal Loan
Interest rate35–40%0–29.9% (purchases)3–15%
FlexibilityVery highHighFixed repayments
Minimum repaymentNone (auto when money comes in)Minimum payment monthlyFixed monthly
Best forShort-term emergenciesPurchases (pay off monthly)Planned larger expenses
RiskEasy to stay overdrawnEasy to build debtFixed commitment

Problems with Overdrafts

ProblemWhy It Matters
Expensive39.9% EAR is high-cost borrowing
Too convenientEasy to dip in and stay there
Automatic repaymentIncome goes straight to repaying overdraft
Cycle of debtHard to escape once reliant
Credit impactHeavy use looks bad to lenders

How to Reduce or Clear Your Overdraft

Step-by-Step Plan

StepAction
1Check the total — know how much you owe
2Set a target — reduce by £50–£100/month
3Request a gradual reduction — ask your bank to lower the limit as you pay it down
4Automate savings — transfer a fixed amount to savings immediately when paid
5Use the 50/30/20 budget — prioritise debt repayment

Options to Clear Faster

OptionHow It Helps
Balance transfer card0% interest for 12–29 months (watch fees)
Personal loanLower interest rate; fixed repayments
SavingsUse savings to clear (overdraft interest > savings interest)
Increase incomeOvertime, side jobs, selling items
Cut spendingRedirect savings to overdraft

Overdraft Alternatives

AlternativeBest For
Emergency fundPreventing need for overdraft
0% credit cardShort-term borrowing at no cost
Personal loanPlanned expenses
Salary advance appsVery short-term (check costs)
Family/friendsInterest-free (if possible)
Credit union loanLower rates than overdraft

If You Are Struggling

ActionDetail
Contact your bankThey may offer a repayment plan or fee freeze
Basic bank accountCannot go overdrawn; prevents further issues
Debt adviceFree help from StepChange, Citizens Advice
Breathing spaceGovernment scheme for debt respite

For more on managing debt, see our debt repayment strategies and debt management plan guide.