Your Credit Score Determines Your APR
The APR you see advertised is not necessarily the APR you will get. Your personal APR is determined entirely by the lender's assessment of your risk, which is based primarily on your credit score.
Lenders use a simple risk-based pricing model: the higher the risk that you might default on the loan, the higher the APR they charge to compensate for that risk.
| Credit Profile | Typical Loan APR | Interest on £5k over 3 yrs |
|---|---|---|
| Excellent | 6.9% | £534 |
| Fair / Average | 15.9% | £1,304 |
| Poor / Bad Credit | 39.9% | £3,618 |
As the table shows, having a poor credit score doesn't just mean you might be rejected — it means that if you are accepted, you will pay over £3,000 more for the exact same £5,000 loan. Improving your credit score before applying is the single most effective way to save money.
Can You Negotiate Your APR?
Many UK consumers assume that the APR offered by a bank is final. In reality, you can often negotiate your APR, particularly on credit cards, if your circumstances have improved.
If you have held a credit card for over a year, have never missed a payment, and your credit score has improved, you are in a strong position to call your lender and request a rate reduction. Lenders want to keep good customers. If you mention that you are considering a balance transfer to a competitor offering a lower rate, your current lender will often lower your purchase APR to retain your business.
The Real Cost of High APR
The danger of high APR becomes apparent when you only make minimum payments on a credit card. Because interest accrues daily on the outstanding balance, paying only the minimum means the vast majority of your payment goes toward interest, barely touching the principal debt.
A £3,500 balance on a card with a 39.9% APR will take over 22 years to clear if you only pay the minimum, and will cost over £4,200 in interest alone. This is why transferring high-APR debt to a 0% balance transfer card is the most urgent priority for anyone carrying credit card debt.