Why some mortgage advisers say splitting is good when interest rates are low

There is no one answer.

Over the past 12 months interest rates have fallen 2.5.% and mortgage borrowers are wondering whether they will miss out on even better deals if they fix when term rolls over.

About $135 billion of fixed mortgage debt is due to be rolled over in the next six months. Until recently a sizeable chunk of borrowers opted for floating or shorter-term fixed rates in anticipation of interest rates dropping further.

Recently there has been a swing to one-year fixed rates, with borrowers hedging their bets on further interest rate drops.