When a mortgage is given by a lender it is understood that the lender will make a profit on the loan throughout the tenure of the loan in form of interest.
The prepayment penalties are imposed on a mortgage if the borrower decides to pay off the mortgage or refinance before the lender has made enough profit on the loan.
The pre-payment penalties may vary from lender to lender. There are many lenders who don’t charge prepayment penalty mortgage at all, however, there are few who might charge if you pre-pay your loan.
It is best that you pre-actively ask your lender about these prepayment penalties. These lenders are bound to disclose any prepayment penalties in their final disclosure.
They cannot impose a prepayment penalty without letting the borrower know.