The best balance transfer card depends on how much you owe, how quickly you can repay it and your credit history. Compare the length of the introductory 0% period, the balance transfer fee, eligibility criteria and the standard interest rate after the offer ends. Check whether the card allows transfers from your existing provider, and avoid using it for new spending unless its terms clearly suit you. Use an FCA-authorised comparison service or check providers directly, and make a repayment plan so the balance is cleared before the promotional period finishes.