How do I negotiate the interest rate on a personal loan?

It's worth going in armed with offers from other banks, because banks love facing off against competition. Bring the rates you got from other institutions and show the manager that you're willing to walk away - a lot of times they'll bring down a few percentage points. Your clean credit history is a strong argument, so use that in the conversation. If they still won't come down enough, it really does pay to keep an eye on smaller finance companies and banks that sometimes offer better rates, or even wait a bit if you can manage to lower the loan amount.

30% is brutal, especially with a clean history like yours. The thing nobody mentioned is that the rate the bank offers on first contact is rarely the final one - it's like a starting point in a negotiation. Besides bringing proposals from other banks (which is essential), try to set up a direct conversation with the manager, not the regular customer service rep. Managers have more wiggle room to move the numbers around.

Another thing that helps a lot is offering something in return. If you have a savings account, insurance, or credit card with them, mention that you're considering consolidating everything with another bank if the rate doesn't come down. Sometimes they can lower it by 5, 6, even 8 percentage points just because you're worth more as a customer than it seems at first glance. And don't hesitate to ask to speak with someone higher up - a supervisor or credit officer can authorize adjustments that a regular rep says they can't.

A tip that works: go back in two weeks if they said they can't negotiate. Sometimes they have room but don't use it right away, or whoever's handling your case changes. Banks are machines, not people, so don't take it personally if they refuse the first time.