Older mortgages sometimes had pre-payment penalty clauses usually added because the loan had a below market interest rate to start. They don't allow those any more, so odds are you don't have that, but to be sure, check your mortgage documents. The best thing to do is to get an amortization schedule and use that to pay off your early, without having to pay a refinance fee or a bi monthly fee. Of course that depends on your current interest rate. Most all loan questions can be answered with a calculator, so if you have any further questions, let me know.
Broker Classic Texas Properties