How Long Should I Fix My Mortgage For in 2026? | NZ Mortgage Broker Guide

# How Long Should I Refix My Mortgage For? What the Iran Conflict, Oil Prices, and Inflation Could Mean for New Zealand Homeowners One of the most common questions I’m being asked by clients right now is: **”How long should I fix my mortgage for?”** Under normal circumstances, that’s a difficult question to answer. In today’s environment, it’s even more challenging. Over the past few months, we’ve seen increasing uncertainty driven by the conflict involving Iran, rising oil prices, inflation concerns, and changing expectations around future interest rates. As homeowners and borrowers, it’s natural to wonder whether now is the time to lock in a longer-term fixed rate or remain on shorter-term lending. As a mortgage broker, I don’t have a crystal ball. Nobody does. However, understanding how these global events affect interest rates can help you make a more informed decision. ## Why Does the Iran Conflict Matter to New Zealand Mortgage Rates? At first glance, a conflict in the Middle East may seem far removed from New Zealand homeowners. The reality is that global financial markets are highly interconnected. The Middle East remains one of the world’s most important oil-producing regions. Any disruption to oil production or shipping routes can push energy prices higher globally. Higher oil prices affect: * Petrol prices * Transport costs * Manufacturing costs * Food distribution costs * Business operating expenses When these costs rise, inflation often follows. New Zealand’s Ministry of Foreign Affairs and Trade has warned that ongoing disruptions in the region could lead to higher fuel prices, increased borrowing costs, and additional inflationary pressures for New Zealand. ## The Oil Price and Inflation Connection Inflation is simply the rate at which prices increase over time. When oil prices rise significantly, the cost of almost everything increases because energy is involved in nearly every stage of the economy. This creates what economists call “cost-push inflation.” The challenge for central banks, including the Reserve Bank of New Zealand (RBNZ), is that higher inflation often requires higher interest rates to keep price growth under control. While recent RBNZ commentary suggests inflation is expected to return towards the 2% target midpoint over time, the Bank has also acknowledged that higher oil prices and Middle East tensions have materially altered the short-term inflation outlook. ## Could Interest Rates Rise Again? This is where things become interesting. Many homeowners have become accustomed to hearing that interest rates are falling. However, mortgage rates are not determined solely by the Official Cash Rate (OCR). Longer-term fixed mortgage rates are heavily influenced by: * Global bond markets * Inflation expectations * Wholesale swap rates * Investor sentiment * Future economic forecasts In its latest economic outlook, New Zealand Treasury forecasts that higher oil prices could push inflation higher in the near term and that interest rates may begin increasing again during the second half of 2026. That does not mean rates will definitely rise. It does mean that the market is becoming increasingly cautious about assuming rates will continue falling indefinitely. ## So, Should You Fix for One Year, Two Years, or Longer? This is the million-dollar question. The answer depends less on trying to predict the market and more on your personal situation. ### Consider a Shorter-Term Fix If: * You believe inflation pressures will ease. * You expect rates to fall further. * You value flexibility. * You may sell or refinance in the near future. ### Consider a Longer-Term Fix If: * You want repayment certainty. * Your household budget is tight. * You would struggle if rates increased unexpectedly. * You prefer peace of mind over trying to “beat the market.” ### Consider Splitting Your Mortgage One strategy I frequently discuss with clients is splitting the mortgage across multiple fixed terms. For example: * 50% fixed for one year * 50% fixed for three years Or * One-third fixed for one year * One-third fixed for two years * One-third fixed for three years This strategy can reduce the risk of getting the timing wrong while maintaining flexibility as rates change over time. ## What Are Smart Homeowners Doing Right Now? The truth is that there is no universal answer. Some borrowers are fixing shorter because they believe inflation will settle and rates could fall further. Others are locking in longer terms because they see increasing geopolitical risks, rising energy costs, and the possibility that current rates may look attractive in hindsight. Both approaches can be valid depending on your circumstances. The mistake is assuming that there is a guaranteed outcome. There isn’t. ## My Advice as a Mortgage Broker When clients ask me how long they should fix their mortgage for, I encourage them to focus on three things: ### 1. Cashflow First Your mortgage structure should support your lifestyle and financial goals. ### 2. Risk Management Ask yourself: “If rates were 1% higher in 12 months, would I still be comfortable?” ### 3. Avoid Trying to Pick the Exact Bottom Even professional economists, central bankers, and financial markets regularly get interest rate forecasts wrong. The goal isn’t perfection. The goal is creating a mortgage structure that performs well under multiple scenarios. ## Final Thoughts The conflict involving Iran, oil price volatility, and inflation concerns have introduced a new layer of uncertainty into global financial markets. While New Zealand’s inflation outlook has improved significantly compared with recent years, rising energy costs remain a risk that could influence future mortgage rates. For homeowners approaching a refix date, this isn’t necessarily a reason to panic. It is, however, a good reason to review your mortgage strategy carefully rather than automatically selecting the lowest advertised rate. Every homeowner’s situation is different. A well-structured mortgage is often worth far more than simply chasing the lowest interest rate. If your mortgage is due for review in the next six months and you’d like to discuss the options available, feel free to reach out. Together, we can build a lending strategy that aligns with your goals, your cashflow, and the realities of today’s changing market. JJ Mortgage Broker MortgageDesign