Overdrafts: how they really cost you
An overdraft doesn’t feel like a debt. There’s no application ritual, no separate statement — your balance just dips below zero and life carries on. That’s precisely why so many people sit in one for years, quietly paying some of the highest interest in personal finance. Here’s what it’s really costing you, and how to get out.
This is information, not financial advice. It explains how UK overdrafts work. If you can’t clear an overdraft, the free debt-help services (MoneyHelper, StepChange, National Debtline) can help.
How overdrafts are charged now
Overdrafts used to be a mess of daily fees, monthly fees and different rates that made the true cost almost impossible to work out. In 2020 the regulator (the FCA) cleaned it up. Now:
- Overdrafts are charged as a single interest rate, shown as an EAR (Equivalent Annual Rate).
- Banks can’t charge more for an unarranged overdraft (going over an agreed limit, or overdrawing with no arrangement) than an arranged one.
- Fixed daily and monthly usage fees were scrapped.
That was meant to make overdrafts clearer and cheaper. It made them clearer — but many banks set that single rate at around 39.9% EAR, with some as high as ~49.9%. To put that in context, that’s typically higher than a normal credit card (~24%), and vastly more than a personal loan.
Arranged vs unarranged
An arranged overdraft is a limit your bank has agreed in advance. An unarranged one is when you spend beyond that (or with no arrangement at all). Since the 2020 rules they cost the same in interest — but unarranged overdrafts can still get payments declined and cause knock-on problems, so an arranged limit is always better than winging it.
Many accounts also give a small interest-free buffer (say the first £X of overdraft is free). Useful — but it’s a cushion for the odd tight day, not a licence to live in the red.
The trap: the overdraft that never goes away
Here’s the real problem. Because an overdraft has no fixed repayment schedule, there’s nothing forcing you to clear it. If your pay lands, clears the overdraft for a day, then you dip straight back in before the next payday, you’re effectively borrowing the same money every month and paying ~40% for the privilege — often without ever seeing it as “debt”.
The tell-tale sign: if you’re overdrawn most days of the month, that’s not a buffer, it’s a permanent loan at a punishing rate. It deserves a plan.
How to get out of an expensive overdraft
The goal is to swap ~40% interest for something far cheaper (or free), then close the gap for good:
- A 0% money-transfer card. Some credit cards will pay money into your current account to clear an overdraft, giving you 0% for a period (for a fee). You then repay the card at 0% instead of the overdraft at 40%. Clear it before the 0% ends.
- A lower-rate personal loan. For a larger, stubborn overdraft, a fixed loan at a much lower rate turns an open-ended debt into structured payments that actually end.
- Switch accounts. Some banks offer a larger interest-free buffer or a 0% overdraft for switchers, and the Current Account Switch Service makes moving painless. It won’t clear the debt, but it can stop the interest while you do.
- Budget the gap closed. Ultimately, the fix is spending slightly less than you earn for a while so payday clears the overdraft and stays clear. Even trimming the overdraft by £50 a month gets you out over time — and knowing your real take-home is where that budget starts.
Work out your take-home to build the plan →
The bottom line
An overdraft is fine as a rare, short-term safety net. As a permanent feature of your finances, it’s one of the most expensive habits going — often dearer than the credit card you’d never dream of maxing out. Find your rate, face the balance honestly, and swap it for something cheaper on the way to zero.
Last checked 30 July 2026. Overdraft rates vary by bank; ~39.9% EAR is typical but check your own account’s rate.
Sources
Just so you know: this guide is information and journalism, not financial advice, and we don't recommend specific financial products. Your circumstances are your own — if you need personal advice, speak to a suitably qualified adviser. Information was correct at the "last updated" date above but things change; always check the linked primary sources.