Breaking a Fixed Term Mortgage in NZ

Locking in a fixed-rate mortgage buys certainty, but life moves on — interest rates fall, you sell the house, or you simply want to refinance. Breaking the fix is allowed, but the lender will recover its loss through a break fee.

How break fees are calculated

Banks calculate a break fee by comparing the rate you fixed at with the wholesale rate they could now lend the same money out at for the time remaining. If wholesale rates have dropped, the gap multiplied by your balance and remaining term is roughly your fee. If wholesale rates have risen, the fee can be small or zero.

When breaking pays off

• Wholesale rates have risen since you fixed, so the fee is minimal.
• You're selling soon and rolling into a new home with one lender.
• The interest saving over the new fixed term exceeds the break fee plus legals.

When it doesn't

If wholesale rates have fallen since you fixed, the break fee usually wipes out any saving from the new lower rate. Always ask your bank for an exact break fee in writing — quotes are valid for only a day or two and can move sharply.

Alternatives to breaking

• Wait for the fix to roll off, then refix on better terms.
• Use the floating portion of the loan to absorb lump sums in the meantime.
• Ask the bank for a partial early repayment within the contractual allowance.

Key takeaways

• Break fees mirror the lender's economic loss — they aren't a penalty.
• The fee can be zero when wholesale rates have risen.
• Always get the break fee in writing before deciding.
• Refixing patiently usually beats breaking in a falling-rate market.

Compare current home loan rates on MoneyGuru, and read our refinancing guide if you're weighing up a switch.