MORTGAGES • MARKET UPDATE
What is happening with New Zealand interest rates right now, September 2026
By Aimee Trott • Published 5 September 2026
The Reserve Bank raised the Official Cash Rate to 2.75 percent on 2 September 2026, its second increase since resuming tightening in July. The decision was widely expected and reached by unanimous consensus, with the Bank signalling a likely pause in October before a further move in December. For most people, the sensible response is to check how your own mortgage or KiwiSaver fund is positioned for this environment, not to try and guess the Reserve Bank’s next move.
What just happened with the OCR?
The Reserve Bank lifted the Official Cash Rate by 25 basis points, from 2.50 percent to 2.75 percent, at its September review. This follows a similar 25 basis point increase in July, when the Bank resumed tightening after holding rates at 2.25 percent earlier in the year. The decision was reached by consensus, a contrast to the split vote seen at the May review.
Why did the Reserve Bank raise rates again?
Inflation has been running above the Reserve Bank’s target band for most of 2026, and it remains a key driver of this decision. Annual inflation reached 4.1 percent in the June quarter, well above the Bank’s 1 to 3 percent target range, although a large part of that increase came from fuel and energy prices rather than broader spending pressure. With inflation still elevated and the OCR sitting below what the Bank considers a neutral level, the Reserve Bank judged there was more work to do.
What does this mean for my mortgage repayments?
If you are on a floating rate, or your fixed term is coming up for renewal, this increase is likely to flow through to a higher rate than you may have been expecting a few months ago. Fixed mortgage rates do not move in lockstep with the OCR, since they are also shaped by wholesale funding costs and competition between lenders, but the general direction has been upward through 2026.
What does this mean for my KiwiSaver?
It depends on what type of fund you are in. Conservative and income-focused funds, which hold more cash and bonds, tend to benefit as interest rates rise, since that lifts the returns on the assets they hold. Growth and balanced funds are more exposed to how share markets react to the broader rate outlook, which can be more mixed in the short term.
What should I expect for the rest of 2026?
The Reserve Bank’s own projections point to a pause at the October review, followed by a further 25 basis point increase to 3.00 percent in December. That said, the Bank has been clear it is not on a preset path, and the timing of any further moves will depend on how inflation and the wider economy track over the coming months.
What this might mean depending on your situation
These are general examples to illustrate how different circumstances change what matters, not personal advice. Everyone’s situation is different, which is exactly why a review matters.
If you are on a fixed mortgage rate
You are shielded from this increase until your current term ends. It is worth using this time to think ahead about your options at renewal, rather than being caught out when your fixed term expires.
If you are on a floating rate, or renewing soon
This is the group most directly affected by this decision. It is worth reviewing whether your current structure still makes sense, and whether fixing part or all of your lending could offer more certainty.
If you are a KiwiSaver member in a conservative or income fund
Rising rates are generally a welcome development for you. It is worth checking your fund is actually positioned to take advantage of that, rather than assuming it is.
FAQs
Will mortgage rates keep rising from here?
Most bank economists expect at least one more increase this year, most likely in December, with forecasts for where the OCR ultimately peaks varying between banks. Nobody can say for certain, which is why reviewing the structure of your lending is generally more useful than trying to time a fixed rate to the exact bottom.
Should I fix my mortgage now or wait?
This depends on your appetite for certainty versus flexibility, and how your current term is structured. It is worth talking this through properly rather than making the decision based on a single announcement.
Does this change affect KiwiSaver members who are close to retirement?
It can, particularly if you are in a more conservative fund, since these funds are more directly affected by interest rate movements than growth funds are. This is a good time to check your fund still matches your timeframe.
How often should I review my mortgage or KiwiSaver fund?
At least once a year, or whenever there is a significant change like this one. A short review now can save you from being caught out later.
Aimee Trott is a Director and Licensed Financial Adviser at Our Adviser, and was named Outstanding KiwiSaver Adviser of the Year 2025. She has 10+ years of experience advising New Zealanders on KiwiSaver, mortgages, and personal risk insurance.
This article is general in nature and does not take your personal circumstances into account. Please book a review for advice specific to your situation.