One phone call away from telephone banking and they will calculate and advise you. 3 f+ u+ f' R0 p% e: ~6 A; f 3 ]# C5 R V; 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. % w5 ~1 t( X6 c% u 4 ^; V, b7 |: T6 n( u& T" isome mortgage can be portable to another property, some can not.