Personal Loan vs Credit Card: Which Is Cheaper in the UK?

Need to borrow? The choice between a personal loan and a credit card depends on how much you need, how long you need it for, and — honestly — how disciplined you are with repayments. The cheapest option is rarely the obvious one, and getting it wrong can cost you thousands of pounds in interest you didn't need to pay.

When a Personal Loan Wins

For amounts over £5,000 and terms over 6 months, a personal loan is almost always cheaper than carrying a credit card balance. The fixed term forces you to actually pay the debt off, and the interest rate is meaningfully lower. UK personal loan rates for good-credit borrowers currently sit between 6% and 12% APR; credit card purchase rates typically sit between 18% and 29% APR.

A £10,000 loan at 8.9% APR over 3 years costs £316/month and £1,376 in total interest. The same £10,000 on a credit card at 22.9% APR, paying £316/month (the equivalent monthly amount), takes over 4 years to clear and costs £5,200+ in interest. That's nearly four times the cost for the same borrowing, simply because you chose the wrong product.

The other advantage of a personal loan is structural: it can't be reused. Once you've paid it off, it's gone. A credit card balance, by contrast, sits there waiting to be run back up — and the data on credit card users shows that the average UK cardholder who carries a balance does exactly that, repeatedly, for years. If you know you're prone to that pattern, a personal loan removes the temptation entirely.

When a Credit Card Wins

For small amounts (under £3,000) that you can repay within the interest-free period (usually 25–55 days from the statement date), a credit card is effectively a free short-term loan. No personal loan can match that — the initiation alone makes small loans uneconomical, and most UK lenders won't offer personal loans below £1,000 anyway.

A 0% purchase card (offering 12–24 months interest-free on new purchases) is even better for planned spending you'll pay off within the promotional period. The catch is that the 0% rate only applies if you make at least the minimum payment each month — miss one and the rate typically reverts to the standard purchase APR immediately, and you lose the promotional window. Set up a direct debit for at least the minimum the day you open the card.

Credit cards also offer Section 75 protection on purchases between £100 and £30,000, which means the card issuer is jointly liable if the retailer fails to deliver or goes bust. That's a meaningful protection for big-ticket purchases (flights, furniture, appliances) that personal loans don't provide.

The Trap: Minimum Payments

The single biggest cost trap on a credit card is the minimum payment. A typical minimum is 1% of the balance plus interest, or around £25 — whichever is higher. On a £5,000 balance at 22.9% APR, the minimum payment is roughly £105. If you only ever pay the minimum, it takes 27 years to clear the debt and you'll pay over £7,500 in interest on top of the original £5,000.

That's not a typo. Twenty-seven years. The minimum payment is designed to keep the debt alive almost indefinitely — it covers the interest and barely dents the principal. If you must carry a credit card balance, fix the monthly payment at a level that clears the debt in 12–24 months and treat the minimum as a floor, never a target.

When to Use Each

Use a credit card for: short-term borrowing you can repay within the grace period (free), small amounts under £3,000, planned purchases where you want Section 75 protection, and flexibility where you genuinely don't know the final amount (a renovation with variable costs).

Use a personal loan for: anything above £5,000, any borrowing you can't repay within 3 months, when you want a fixed end date and a fixed monthly payment, and when you know you tend to revolve credit card balances. Always compare the total cost, not just the monthly payment — a lower monthly payment almost always means a higher total cost.

Worked Example

You need to borrow £8,000 for a used car. Three options:

• Personal loan at 8.9% over 3 years: £253/month, £1,108 total interest. Debt-free in 36 months.
• Credit card at 22.9%, paying £253/month: cleared in 41 months, £2,337 total interest. £1,229 more expensive.
• Credit card at 22.9%, paying minimum (~£165/month falling): cleared in around 7 years, £5,800+ total interest. £4,700+ more expensive than the loan.

Run your own numbers in our Personal Loan Calculator and compare against the minimum-payment reality of a credit card before you decide.

The Verdict

There's no universal "best" — there's the right product for the amount, the term, and your repayment discipline. The expensive mistakes happen when borrowers pick by monthly payment instead of total cost, or when they reach for a credit card for a purchase that should have been a loan because the application is quicker. Decide the amount, decide the repayment window, then pick the product — in that order.