The rate gap has to clear more than just itself
A lower interest rate only helps if it also covers whatever it costs to get there -- a prepayment penalty on the old loan and an origination fee on the new one both eat into the savings, so the real comparison is total cost over the remaining term, not just the percentage difference.
Refinancing works best with a plan, not just a lower number
Switching loans purely to chase a slightly lower rate, without a clear plan to pay down the balance, can end up extending your debt timeline. Refinancing is most useful when it is paired with a genuine intent to pay off the loan faster or more affordably.
Frequently Asked Questions
Is there a minimum credit score improvement needed to make refinancing worth it?
There is no fixed threshold -- it depends on your current rate, remaining balance, and any penalty fees. Getting a real prequalified quote is the only reliable way to know if the numbers work in your favor.
Can I refinance a loan that still has a long remaining term?
Yes, and a longer remaining term often makes refinancing more attractive, since there is more time left for a lower rate to generate meaningful savings -- just factor any prepayment penalty into the calculation first.