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best bank to refix mortgage
Best bank to refix your mortgage in New Zealand
My recommendation is to compare at least four banks before refixing, rather than automatically staying with your current bank. In New Zealand, the best choice depends on the fixed interest rate you can negotiate, any cashback offer, and whether you want certainty over your repayments or flexibility to refix again soon.
Don't focus on the advertised interest rate alone. Your existing bank may offer you a better deal if you negotiate, while another bank may be willing to pay a cash contribution to win your mortgage.
1. Which New Zealand banks are best right now?
As of 10 October 2026, the latest published comparisons point to Kiwibank and Westpac as good starting points for your rate comparison.
| Bank | Best reason to consider it |
|---|---|
| Kiwibank | Worth checking first for a 1-year or 2-year fixed rate. |
| Westpac | Worth comparing for a 3-year fixed rate. |
| ANZ | Worth checking if you are an existing customer and can negotiate a better rate. |
| BNZ | Worth comparing for its fixed rates and any cashback available when switching. |
| ASB | Worth getting a competing offer from, particularly if you already bank with ASB. |
Recent published comparisons identify Kiwibank as having the lowest advertised 1-year rate at 4.95% and 2-year rate at 5.39%. Westpac has been reported as offering the lowest 3-year rate at 5.39%. These rates can change, and the rate you qualify for may differ. Source: Opes Partners' mortgage rate comparison. opespartners.co.nz
You can also check the Reserve Bank of New Zealand's mortgage interest rate data for a broader view of the market. rbnz.govt.nz
2. Should you fix for 1, 2 or 3 years?
The best term depends on your financial situation and expectations for interest rates.
- 1 year: Worth considering if you want to reassess your mortgage relatively soon. However, you could face higher rates when it expires.
- 2 years: A useful middle ground if you want repayment certainty without locking in for too long.
- 3 years: Worth considering if you value predictable repayments over a longer period, particularly if you are concerned about future rate increases.
There is no guarantee that rates will fall or rise over your chosen term. Recent economic commentary has highlighted the possibility of further increases in New Zealand mortgage rates. oneroof.co.nz
My starting point would be to compare the 1-year and 2-year options first, then see whether the extra certainty of a longer term justifies its cost.
3. Don't overlook cashback
If you are considering switching banks, cashback could make a substantial difference to the overall deal.
For example, on a $500,000 mortgage:
- A 0.20 percentage-point interest rate difference equates to approximately $1,000 in interest in the first year, before accounting for principal repayments.
- A $5,000 cashback offer could outweigh a modest rate difference in the short term.
However, cashback can come with conditions, including requirements to keep your mortgage with the bank for a specified period. Switching can also involve legal costs and repayment of cashback received from your existing bank. See MoneyHub's guide to mortgage cashback. moneyhub.co.nz, bnz.co.nz
If you're staying with your current bank, ask whether it can match a competitor's rate before you refix.
4. Let me narrow it down to the best option for you
I can help you work out which bank and fixed term are most worth pursuing for your particular mortgage.
First, which bank is your mortgage currently with?
For example, ANZ, ASB, BNZ, Westpac, Kiwibank or another lender.
Once I know that, I can help you compare your options and identify what rate you should aim to negotiate.
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Captured 11 October 2026