Compare floating and fixed mortgage rates for New Zealand. See your monthly payment at each fixed term (1, 2, 3, 5 years) versus floating rate, model total 5-year costs, and use the split loan and break fee tools to choose the right rate strategy.
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Monthly Payment Comparison
NZ$3,694
Best option: 2-year fixed at 6.3% — OCR falling favours floating long-term
New Zealand has a unique mortgage market. Understanding the typical rate structure helps you decide when to fix and when to float.
Floating Rate (7.5%)
NZ$4,195/mo
Moves with OCR. Currently 1.3% above your best fixed rate. No break fees — can make unlimited extra repayments. Rate changes monthly.
1–2 Year Fixed (historically cheapest)
NZ$3,694/mo
NZ 1–2yr fixed historically the cheapest part of the yield curve. Rate certainty for 12–24 months. Break fees apply if you need to exit early.
Most popular term in New Zealand
5-Year Fixed (certainty premium)
NZ$3,912/mo
Longest certainty — rate locked for 5 years. Typically 0.55% above 2yr fixed. Large break fees if circumstances change (sale, refix, top-up).
Float vs 2yr Fixed Premium
1.25%
How much more you pay monthly for floating flexibility
OCR Direction Signal
Float may catch up
Based on your RBNZ OCR direction selection
Float Monthly Extra Cost
NZ$501
vs best fixed rate — what flexibility costs you monthly
Annual Flexibility Premium
NZ$6,012
Full year cost of floating vs best fixed
Pro
Professional Simulator
Split loan strategy, fixing decision tree, 5-year total cost model
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Split: NZ$360,000 fixed (60%) at 6.3% + NZ$240,000 floating (40%) at 7.5%
100% Floating
NZ$4,195/mo
Maximum flexibility. No break fees. Fully exposed to rate movements. Make extra payments freely.
60% Fixed / 40% Float
NZ$3,895/mo
Best of both worlds. Floating portion stays flexible for extra payments and rate movements. Fixed portion provides payment certainty.
Recommended for most NZ borrowers
100% Fixed (2yr)
NZ$3,694/mo
Maximum certainty. Lower payment if fixed rate below floating. No flexibility — break fees apply to any change.
Split Monthly Payment
NZ$3,895
Your monthly payment with split structure
vs 100% Floating
NZ$301 saving
Monthly saving from split vs all floating
Floating Portion (extra payments)
NZ$240,000
Amount where you can make extra repayments freely
Fixed Portion (break fee applies)
NZ$360,000
Amount locked in — break fee if you exit early
How to Use This NZ Variable vs Fixed Rate Calculator
Enter your loan amount and current rates for floating and each fixed term. Select the expected OCR direction from the RBNZ. The calculator shows your monthly payment for each option and models total costs over 5 years, accounting for refix scenarios when fixed terms expire.
This calculator is specific to New Zealand’s mortgage market, where 1–2 year fixed rates are the most popular terms and the RBNZ Official Cash Rate drives the floating rate.
NZ Rate Structure Explained
Floating rate: Moves with OCR — currently 0.5–1.0% above short fixed
1-year fixed: Short certainty — refix frequently
2-year fixed: Most popular NZ term — often cheapest historically
3-year fixed: Middle ground — moderate certainty
5-year fixed: Maximum certainty — carries rate premium
Break fee: Floating = $0. Fixed = can be $0–$10,000+ depending on rate differential
Unlike Australia, New Zealand does not have offset accounts at the same scale — making the floating vs fixed decision more purely about rate and payment certainty.
Example: Split Loan Strategy
David and Sarah — $650,000 Mortgage in Auckland
Total Loan
$650,000
Fixed Portion (60%)
$390,000 @ 6.25% 2yr fixed
Floating Portion (40%)
$260,000 @ 7.50% floating
Fixed monthly payment
$2,528
Floating monthly payment
$1,819
Total monthly payment
$4,347
100% floating alternative
$4,548/mo
Monthly saving from split
$201/mo
Extra repayments possible
Yes — on floating portion
The split strategy gives David and Sarah certainty on 60% of their loan while keeping 40% floating for extra repayments and to benefit from any OCR cuts.
Frequently Asked Questions
The floating rate includes a premium for flexibility — you can pay it off at any time, make unlimited extra payments, and redraw if needed, all without break fees. Banks price this flexibility into the rate. Typically NZ floating rates sit 0.5–1.5% above the cheapest 1–2 year fixed rate. The gap widens when the OCR is expected to fall, as fixed rates price in future OCR cuts.
A break fee is charged when you exit a fixed rate mortgage before the term ends — whether by selling, refinancing to another lender, topping up the loan, or paying it off early. The fee compensates the bank for replacing your rate in the wholesale market. If rates have fallen since you fixed, break fees can be substantial — several thousand dollars. If rates have risen, the fee may be zero. Always get an exact quote from your bank before deciding.
When the RBNZ is in a rate-cutting cycle, floating rates tend to fall over time. Staying floating or fixing for only a short term (1 year) lets you benefit from falling rates. However, fixed rates already price in anticipated OCR cuts, so the advantage of floating may be smaller than it appears. A split strategy — part floating, part short-fixed — is often optimal when rates are falling.
A split loan divides your mortgage into two portions — typically 60% fixed for certainty and 40% floating for flexibility. The fixed portion gives you a predictable payment even if rates rise. The floating portion allows unlimited extra repayments without break fees, and lets you benefit from OCR cuts. It is considered the best-of-both-worlds approach and is widely recommended by NZ mortgage advisers.
Most NZ banks let you lock in a new fixed rate up to 60–90 days before your current fixed term expires, at no cost. If rates are rising, locking in early secures today's rate. If rates are falling, waiting until expiry captures further cuts. In an uncertain environment, a mortgage adviser can help you decide based on wholesale rate forecasts and your personal circumstances.