however, before changing the loan company, the lender can ask the original loan company whether it can adjust the interest rate float down option.

At present, many loan companies offer the float down option, but there is no free lunch in the world. If you choose to adjust the interest rate, the lender needs to: the adjusted interest rate is at least .25%-.5% lower than the original, and pay a negotiation fee, which usually accounts for .5% of the total loan. Assuming that the total loan is 2, US dollars, Then the agreement fee will be $1,, and there is no chance to adjust the interest rate again. Some loan companies will require the credit score to be reviewed after the loan is approved before starting the float down option.