A fixed rate home loan locks your interest rate for a set period, typically between one and five years.
For Canterbury homebuyers, where the median property price sits around $1.1 million, the decision to fix your rate carries significant financial weight. The difference between fixing at the wrong time and structuring your loan properly can shift your repayment obligations by hundreds of dollars each month. Understanding what you gain and what you sacrifice when you fix your rate determines whether this loan structure supports or restricts your financial position.
Rate Security Over a Defined Period
When you fix your interest rate, your repayments remain unchanged regardless of Reserve Bank movements during the fixed period. This creates certainty around your monthly mortgage costs, which matters particularly in Canterbury where many buyers stretch their borrowing capacity to enter the market near schools like Canterbury Girls Secondary College or close to the railway line for city access.
Consider a buyer who purchases a two-bedroom apartment in Canterbury for $850,000 with a 10% deposit. At a fixed rate of 6.5% over three years on a principal and interest loan, monthly repayments sit at approximately $5,150. If variable rates climb to 7.2% during that period, buyers on variable loans with identical loan amounts would pay around $5,500 monthly. That $350 difference compounds over three years to more than $12,000 in savings, purely from the timing of when the rate was locked.
The reverse scenario carries equal weight. If rates fall during your fixed period, you continue paying the higher locked rate while variable rate borrowers benefit from reduced repayments. The security comes at the cost of flexibility in both directions.
Break Costs and Early Exit Penalties
Fixed rate loans typically carry break costs if you exit the loan before the fixed term ends. These costs compensate the lender for the difference between your fixed rate and the current wholesale rate, and they can run into thousands of dollars depending on how much time remains and how far rates have moved.
Break costs become relevant when you sell your property, refinance to access equity, or want to make repayments above the allowed limit. Most fixed rate products allow between $10,000 and $30,000 in additional repayments per year without penalty, but anything beyond that threshold triggers the calculation.
In our experience with Canterbury buyers, break costs create the most friction when property values rise quickly and homeowners want to access equity for renovations or investment purchases. A buyer who fixed three years ago at 2.8% and now wants to refinance to pull equity from a property that has appreciated $200,000 may face break costs of $15,000 or more if current fixed rates sit near 6.5%. That cost needs to be weighed against the benefit of accessing the equity now versus waiting for the fixed term to expire.
Limited Offset and Redraw Options
Most fixed rate home loan products do not include offset accounts, though some lenders offer partial offset or transaction accounts with limited functionality. This removes one of the most effective tools for reducing interest costs over the life of a loan.
An offset account reduces the balance on which you pay interest by holding savings in a linked account. On a variable rate loan with an offset, keeping $50,000 in the offset account on an $800,000 loan means you only pay interest on $750,000. Over a year, at current variable rates, that saves approximately $3,250 in interest. Fixed rate loans that do not support offset accounts remove this option entirely.
Redraw facilities on fixed loans, where available, often come with restrictions on how much you can withdraw and how frequently. If you make additional repayments and later need to access those funds, the process can be slower and more limited than with variable products. For Canterbury buyers who may need liquidity for property improvements or unexpected costs, this limitation carries practical weight.
Split Rate Structures for Balance
A split loan divides your borrowing between fixed and variable portions, typically in proportions like 50/50 or 70/30. This structure allows you to lock in partial rate security while maintaining access to offset accounts and flexible repayment options on the variable portion.
As an example, a buyer purchasing a three-bedroom house in Canterbury for $1.3 million with a 15% deposit might structure the $1.1 million loan as $550,000 fixed at 6.4% for three years and $550,000 variable at 6.8% with a linked offset account. The fixed portion provides repayment certainty on half the debt, while the variable portion with offset allows the buyer to park rental income from their previous property, reducing the effective interest on that half of the loan.
This approach requires slightly more management but gives you exposure to rate movements in both directions while preserving the tools that reduce interest costs. When your fixed rate expiry approaches, you can reassess and adjust the split based on your current financial position and rate outlook.
Portability Across Property Sales
Some fixed rate loans include portability features that allow you to transfer the loan to a new property if you sell and purchase within a defined timeframe, typically 90 days. This avoids break costs that would otherwise apply when selling during a fixed period.
Portability matters in markets like Canterbury where families often upgrade from apartments to townhouses or larger homes as their circumstances change. Without portability, selling your $900,000 apartment to purchase a $1.4 million house during your fixed term forces you to either pay break costs on the existing loan or structure the new purchase separately. With portability, you transfer the fixed loan to the new property and add a top-up loan for the additional amount required.
Not all lenders offer this feature, and those that do often limit how much you can increase the loan amount while maintaining the fixed rate. The terms vary significantly between products, making this a feature worth confirming during your home loan application if you anticipate any possibility of moving during the fixed period.
Call one of our team or book an appointment at a time that works for you to review your borrowing structure and determine whether fixing part or all of your rate aligns with your repayment capacity and property plans in Canterbury.
Frequently Asked Questions
What happens if I need to sell my Canterbury property during a fixed rate period?
You will typically incur break costs, which compensate the lender for the difference between your fixed rate and current wholesale rates. Some lenders offer portable loans that allow you to transfer the fixed rate to a new property within 90 days, avoiding these costs.
Can I still use an offset account with a fixed rate home loan?
Most fixed rate home loans do not include offset accounts, though some lenders offer limited offset functionality. This removes the ability to reduce your interest costs by parking savings against the loan balance.
How does a split rate loan work for Canterbury property buyers?
A split loan divides your borrowing between fixed and variable portions. You gain rate security on the fixed portion while maintaining access to offset accounts and flexible repayments on the variable portion, balancing certainty with flexibility.
What are break costs and when do they apply on fixed rate loans?
Break costs apply when you exit a fixed rate loan before the term ends, such as when refinancing or selling. The cost depends on how much time remains and the difference between your fixed rate and current wholesale rates, often running into thousands of dollars.
How much can I pay extra on a fixed rate home loan without penalty?
Most fixed rate products allow between $10,000 and $30,000 in additional repayments per year without incurring break costs. Anything above that threshold typically triggers penalty calculations based on the lender's terms.
