Fixed vs Floating: Choosing the Right Mortgage Rate for You
When you take out a home loan in New Zealand, one of the first decisions you will face is whether to fix your interest rate or let it float. Both structures have genuine advantages and real trade-offs, and the right choice depends on your financial situation, your appetite for certainty, and your plans for the property. At Chaperone, we believe understanding these structures clearly is far more valuable than chasing the lowest headline rate without context.
How Fixed Rates Work
A fixed interest rate locks in a specific rate for a set period, most commonly between six months and five years in New Zealand. During that term, your repayments stay the same regardless of what happens to interest rates in the broader market. This predictability is appealing for borrowers who want to budget with confidence or who are concerned about rates rising. At the end of the fixed term, you can re-fix at whatever rate is available, switch to a floating rate, or explore a different loan structure entirely.
How Floating Rates Work
A floating rate, sometimes called a variable rate, moves in line with the market and can change at any time. In New Zealand, the Reserve Bank of New Zealand (RBNZ) sets the Official Cash Rate (OCR), which has a significant influence on floating mortgage rates. When the OCR rises, floating rates tend to rise too; when it falls, floating rates often follow. Floating rates give you flexibility to make extra repayments or pay off your loan early without penalty, which can be valuable if your circumstances allow you to put extra money towards your mortgage.
The Trade-Offs of Fixing
While fixing gives you certainty, it also means you are locked in for the term. If you need to break a fixed-rate mortgage early - because you are selling the property or refinancing, for example - you may face break fees. These can be significant depending on how much rates have moved since you fixed. It is worth reading your loan documents carefully and understanding the break fee calculation method before committing to a fixed term. Asking your lender or mortgage adviser to walk you through a hypothetical example can make this clearer.
Splitting Your Loan
Many New Zealand borrowers choose to split their mortgage across different rate types and terms, rather than putting everything into one structure. For example, a borrower might fix one portion of their loan on a two-year term, fix another portion on a one-year term, and leave a smaller portion floating. This approach provides some budget certainty while retaining flexibility, and it spreads refinancing risk so that not all of the loan rolls over at the same time. It is a strategy worth discussing with a mortgage adviser to see whether it suits your situation.
Short-Term vs Long-Term Fixed Rates
Within the fixed category, borrowers must also decide how long to fix for. Shorter terms tend to offer more flexibility and allow you to re-assess your rate more frequently, but they also mean more regular refinancing decisions. Longer terms lock in certainty for an extended period, which some borrowers find valuable, though they may come with higher rates or less attractive terms depending on market conditions at the time of fixing. There is no universally correct answer - it is a judgement call based on your own circumstances and outlook. Some borrowers value the certainty of knowing their repayment will not change; others prefer the agility of being able to refinance or repay at any time.
Talking Through Your Options
The fixed versus floating decision interacts with many other aspects of your loan structure, including your repayment type, loan term, and any offset or revolving credit facilities you are considering. At Chaperone, we can connect you with mortgage advisers who understand the New Zealand lending landscape and can help you think through which structure, or combination of structures, fits your situation. The goal is a loan that serves your life - not just the lowest rate on paper.