One phone call away from telephone banking and they will calculate and advise you. - o6 Z' q) C! K- `8 W $ P6 A! ^% a+ M% }0 _; IIt can be quite significant when the remaining term is long, depending on the principal, the prevailing interest rate of the term at negotiation and current interest rate. . a* Z* F E- ?+ W0 w" x 3 L$ I: y( {7 ~2 Q! b& wsome mortgage can be portable to another property, some can not.