Why break a fixed mortgage?
There are several reasons you might want to break your fixed mortgage term early:
- Interest rates have dropped — you want to refix at a lower rate
- Selling your property — you need to repay the mortgage
- Refinancing to another lender — a better deal elsewhere
- Relationship changes — separation requiring property sale or buyout
- Restructuring your loan — changing from interest-only to P&I, or splitting your loan
How break fees are calculated
NZ banks use an administrative formula based on the difference between your fixed rate and the current wholesale rate for the remaining term. The key factors are:
- Your fixed rate vs current rates — the bigger the gap, the higher the fee
- Remaining fixed term — more time left = higher fee
- Loan size — larger loans = larger break fees
When break fees are low or zero
Break fees can actually be $0 if current wholesale rates are higher than when you fixed. This is because the bank can re-lend your money at a higher rate, so they lose nothing. Break fees are highest when rates have fallen significantly since you locked in.
Example break fee scenario
| Detail | Value |
|---|---|
| Loan balance | $500,000 |
| Your fixed rate | 6.50% |
| Current comparable wholesale rate | 5.00% |
| Time remaining on fix | 18 months |
| Approximate break fee | $11,250 |
This is simplified — actual calculations vary by bank. Always get a formal break fee quote from your lender.
When breaking early makes sense
Breaking early can be worthwhile if the interest savings from the new lower rate exceed the break fee over the remaining period of your original fix. For example:
- Break fee: $5,000
- Monthly saving at new rate: $400/month
- Remaining original term: 18 months
- Total saving: $7,200 - $5,000 = $2,200 net benefit
Tips to minimise break costs
- Wait until your fixed term naturally expires
- Use shorter fixed terms (less exposure to large break fees)
- Negotiate — some banks will waive or reduce break fees if you're restructuring with them
- Factor in cash-back offers from new lenders
Frequently asked questions
What is a break fee and when do I pay it?
A break fee (Early Repayment Fee) is charged if you exit a fixed-rate mortgage before the term expires. It's calculated as the loss the lender incurs by losing your locked interest rate. If you're at 5.5% and break when rates are 4.5%, the lender loses the difference, so you pay a break fee.
How is a mortgage break fee calculated in New Zealand?
Break fees are typically calculated as: (Your Fixed Rate – Current Market Rate) × Remaining Loan Balance × Remaining Term (in years). For example, breaking a $400,000 loan at 5.5% when rates are 4.5% with 2 years remaining: (0.01 × $400,000 × 2) = $8,000 break fee. Use our calculator to estimate your specific break fee.
When does breaking a fixed mortgage early make financial sense?
Breaking early makes sense if: you're refinancing to a rate at least 0.75–1.00% lower (so the interest savings exceed the break fee), you're selling the property and must discharge the loan, or your circumstances have dramatically changed (job relocation, family situation). Run the numbers carefully; don't break just because rates have fallen.
Can I negotiate a lower break fee?
Some lenders will negotiate, especially if you're switching to them. Always ask; the worst they'll say is no. However, most lenders have fixed break fee formulas and won't discount significantly. It's worth asking, but don't expect major reductions.
What are my options if I need to exit my fixed mortgage before the term ends?
Options include: pay the break fee and refinance to a better rate (if the savings justify the cost), wait until the term expires (if possible), sell the property (discharge the mortgage), or extend the fixed term with your current lender (often no fee, but rate may be less favourable than market rates).
Calculate your break fee
Estimate the cost of exiting your fixed mortgage early and see if refinancing makes financial sense.