Key facts: Rough sorting rule — overdrafts for days-to-weeks buffers (but at ~40% EAR, never as a home); credit cards for spending you'll clear within 0% windows or quickly; personal loans for £2,000+ repaid over 1–7 years, where rates are lowest and structure enforces payoff. The most expensive habit in Britain is using the wrong one long-term.
Overdrafts: the emergency buffer
Arranged overdrafts are instant and flexible — and since regulation standardised pricing, most big banks charge around 40% EAR, worse than most credit cards. Right use: covering a timing mismatch measured in days. Wrong use: living in it. A persistent overdraft is expensive revolving debt wearing a current-account disguise — refinancing a standing overdraft into a cheaper structured product is one of the most reliable money wins going.
Credit cards: powerful with a plan
At standard rates (mid-20s% APR and up) cards are pricey to carry — but two features make them situationally unbeatable: 0% purchase and balance-transfer windows (borrowing free for 12–30 months if you clear within them), and Section 75 protection on purchases of £100–£30,000, which makes a card the smart way to pay even when it's a poor way to borrow. The discipline test is honest self-knowledge: minimum-payment drift at 25% APR is the trap that funds the industry. See clearing card debt if you're already there.
Personal loans: structure and scale
For £2,000–£25,000 over one to seven years, unsecured loans usually carry the lowest rates of the three — strongest in the £7,500–£15,000 band — with fixed payments that guarantee the debt actually dies. The costs of that structure: less flexibility (though early repayment is capped at ~58 days' interest), and it's overkill for small, short needs. Our APR guide covers comparing offers properly.
The decision in practice
£300 for a week until payday: arranged overdraft. £1,500 of purchases clearable in a year: 0% purchase card. £8,000 car repair-and-more over 4 years: personal loan. Ongoing balance you keep meaning to clear: whichever structured product refinances it cheapest — usually a loan or 0% transfer. And borrowing for essentials because income doesn't stretch is a debt-advice conversation, not a product choice — StepChange and Citizens Advice are free.
Matching the product to the need
A broker can price the loan route against what your cards and overdraft actually charge — often revealing a consolidation saving hiding in plain sight. Find a loan broker through Nesto — free, no obligation.
Frequently asked questions
Why are overdrafts so expensive now?
Pricing reform replaced complex fees with flat rates — most big banks settled around 40% EAR, transparent but high. Fine for days, punishing for months.
When does a credit card beat a loan?
When a 0% window covers your payoff period, for smaller amounts, and whenever Section 75 protection matters on the purchase itself.
What's the cheapest way to borrow £10,000?
For most borrowers with reasonable credit: an unsecured personal loan over the shortest comfortable term — the £7,500–£15,000 band is where loan pricing is keenest.
Should I consolidate my overdraft and cards?
If a structured product genuinely undercuts the blended rate you're paying — frequently yes. Then guard the freed-up limits from refilling.