The Pros and Cons of Fixed Rate Loans for First Home Buyers

Fixed Rate Loans Lock In Your Repayments

A fixed interest rate means your repayments stay the same for the agreed term, usually between one and five years. You know exactly what you'll pay each month, which makes budgeting easier when you're adjusting to mortgage repayments for the first time.

Consider a couple purchasing in Brisbane who locked in a fixed rate for three years. Their monthly repayment stayed at $2,400 regardless of what happened to variable rates during that period. When variable rates rose six months later, their friends who'd chosen variable loans saw repayments jump by $300 per month. The fixed rate gave them breathing room to settle into homeownership without worrying about rate movements affecting their household budget.

The certainty matters most in the first year or two of ownership, when you're still working out how much margin you have between income and expenses. Knowing your repayment won't change removes one variable from that equation.

You'll Lose Access to an Offset Account

Most fixed rate loans don't allow you to link an offset account. An offset account is a transaction account where the balance reduces the amount of interest charged on your loan. If you have $20,000 sitting in an offset, you only pay interest on the remaining loan balance.

With a fixed rate loan, any extra cash you hold usually sits in a regular savings account earning minimal interest instead of offsetting your mortgage. That makes a measurable difference if you're building up savings for furniture, repairs, or parental leave.

Some lenders offer redraw facilities on fixed loans, which let you make extra repayments and access them later if needed. Redraw isn't the same as offset because the money isn't immediately available, and some lenders charge fees or limit how often you can redraw. Others cap the total amount you can repay above your minimum during the fixed period, often at $10,000 to $30,000 per year depending on the lender.

If you're planning to park savings or expect irregular income like bonuses or a second income that fluctuates, a variable loan with offset will usually serve you better. If your income is steady and you don't expect to hold large cash balances, the lack of offset is less relevant.

Extra Repayments Are Usually Capped or Blocked

Fixed rate loans limit how much extra you can repay each year without penalty. The cap varies by lender but typically sits around $10,000 to $30,000 annually. Some lenders block extra repayments entirely during the fixed term.

That restriction matters if you receive a tax refund, inheritance, or work bonus and want to reduce your loan balance quickly. On a variable loan, you can throw any amount at the mortgage without restriction. On a fixed loan, repayments beyond the cap trigger break costs, which are fees the lender charges to compensate for lost interest.

When you're thinking about whether to fix, estimate how much extra you're likely to repay in a typical year. If that figure is under $10,000, most fixed loans will accommodate it. If you're planning to make larger lump sum payments, either choose a lender with a higher cap or consider splitting your loan between fixed and variable portions.

Break Costs Apply If You Exit Early

Break costs are charged when you pay out a fixed rate loan before the fixed term ends. They can run into thousands of dollars depending on how much rates have moved since you fixed and how long remains on your term.

If you fixed at 5.5% and variable rates have since dropped to 4.8%, the lender has lost the opportunity to re-lend that money at the higher rate. The break cost compensates them for that difference across the remaining fixed period. The calculation depends on your loan balance, the rate difference, and the time left on the fixed term.

Break costs become relevant if you sell the property, refinance to access equity, or want to switch lenders during the fixed period. In our experience, buyers underestimate how often circumstances change in the first few years of ownership. Relationships shift, jobs relocate, families grow, and properties that seemed perfect at purchase no longer suit.

If there's any chance you'll sell or refinance within the fixed term, that risk should weigh heavily in your decision. Some lenders allow you to port the fixed loan to a new property, but that option isn't universal and comes with conditions.

Fixed Rates Don't Always Start Lower Than Variable Rates

Fixed rates are not automatically cheaper than variable rates. Lenders price fixed rates based on where they expect variable rates to move over the fixed term, not where they sit today. When the market expects rates to rise, fixed rates are often higher than current variable rates. When the market expects cuts, fixed rates may be lower.

At the time of writing, variable rates and fixed rates are sitting close to each other for most lenders, and the gap between them is narrower than it has been in previous years. That means the decision between fixed and variable is less about immediate cost and more about flexibility and certainty.

If you fix purely because you assume it's cheaper, you may be surprised. The value in fixing is the certainty, not necessarily a lower starting rate.

You Can Split Your Loan Between Fixed and Variable

Many first home buyers split their loan, fixing a portion for certainty and keeping the rest variable for flexibility. A common approach is to fix 50% to 70% of the loan and leave the remainder variable with an offset account attached.

Consider a buyer with a $450,000 loan who fixed $300,000 for three years and kept $150,000 variable. The fixed portion protected most of their repayment from rate rises. The variable portion allowed them to use an offset account, make unlimited extra repayments, and maintain flexibility if they needed to refinance or sell.

Splitting gives you some protection from rate rises without locking yourself in completely. You can adjust the split to suit your priorities. If certainty matters most, fix a larger share. If you want to keep offset and redraw options open, weight the split toward variable.

The downside is that splitting can make your loan structure slightly more complex, and some lenders charge separate fees for each loan portion. That's usually a minor issue compared to the flexibility you gain.

Fixed Rates Work Well If You're Using a Low Deposit Scheme

If you're buying under the Australian Government 5% Deposit Scheme or Help to Buy, knowing your repayments won't rise during the first few years can make a meaningful difference. Low deposit buyers often have less margin in their budget because they're borrowing a higher percentage of the property value and their income is typically closer to the maximum the lender will support.

A fixed rate removes the risk of repayment increases wiping out that margin before you've built up any equity or savings buffer. You're also more likely to benefit from first home buyer stamp duty concessions and grants in Queensland and other states, which helps with upfront costs but doesn't reduce the ongoing loan repayment. Fixing the rate gives you time to stabilise financially without worrying about rate movements.

That said, low deposit buyers are also the group most likely to need flexibility if circumstances change. If there's a possibility you'll need to access equity, refinance, or sell within a few years, weigh that against the value of repayment certainty.

How to Decide Between Fixed, Variable, or Split

Start with your financial situation. If your income is stable, your expenses are predictable, and you don't expect to hold large savings in the first few years, a fixed rate will likely give you useful certainty without costing you much in lost flexibility.

If your income varies, you expect bonuses or irregular payments, or you're likely to accumulate savings you'd prefer to offset against the mortgage, a variable loan with offset will usually serve you better. The same applies if there's any realistic chance you'll sell or refinance within three years.

If you're uncertain or want some of both, split the loan. Fix enough to protect your budget from rate rises and keep enough variable to maintain access to offset and extra repayment options. Most borrowers we work with who split their loans are happy with the balance it provides.

Your decision should also factor in your risk tolerance. Some buyers sleep better knowing exactly what they'll pay each month. Others prefer the flexibility to adapt as their circumstances change. Neither approach is wrong, but the choice should match your priorities and situation.

If you'd like to talk through how fixed and variable options fit your circumstances, call one of our team or book an appointment at a time that works for you.

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