Overdrafts are one of the most expensive forms of borrowing in the UK, yet millions of people rely on them without fully understanding what they cost. This guide explains exactly how they work and what alternatives are available.
- How overdraft charges work
- The arranged overdraft allowance
- Cheaper alternatives to an overdraft
- How to reduce overdraft dependency
How overdraft charges work
Following regulatory changes in 2020, UK banks now charge interest on overdrafts as a simple annual percentage rate rather than confusing daily fees. Rates vary by bank but most authorised overdraft rates now sit between 19% and 40% APR — rates that are competitive with credit cards but far more than personal loans or savings account returns.
Unauthorised overdrafts — going beyond your agreed overdraft limit — typically attract the same interest rate but may also incur additional fees. Returned payment fees can also apply if a direct debit or standing order bounces.
The arranged overdraft allowance
Some banks offer a small arranged overdraft allowance free of charge — typically between £0 and £500 depending on the bank and account type. Below this threshold you pay no interest at all. Monzo, Nationwide, and Starling all offer some form of buffer or fee-free arranged overdraft.
Cheaper alternatives to an overdraft
If you regularly use your overdraft, there are almost always cheaper options available. A 0% purchase credit card can replace overdraft use completely if you pay it off in full each month. A personal loan at 6% to 8% APR is dramatically cheaper than a 39.9% APR overdraft for larger amounts.
Building a small emergency fund of even £500 to £1,000 in an easy-access savings account can eliminate the need for an overdraft entirely by covering unexpected expenses.
How to reduce overdraft dependency
Set up account alerts to warn you when your balance falls below a set threshold. Review your direct debits to ensure they all fall after your payday. Build a small cash buffer by saving a set amount each month into a separate easy-access savings account.
Bottom line
Overdrafts are convenient but expensive. If you use yours regularly, treat it as a warning sign that your monthly budget needs attention, and consider switching to a cheaper alternative while you work on building a small savings buffer.