First Home Buyer Guide to Fixed Rate Loans and Repayments

Most first home buyers choosing a fixed interest rate assume they can still make extra repayments without penalty.

That assumption costs people thousands of dollars in break fees or lost opportunity because many fixed rate products strictly limit how much additional money you can contribute during the fixed period. Before you lock in your rate, you need to understand exactly what you're giving up and whether the trade-off makes sense for your situation.

How Fixed Rate Loan Repayments Work in Practice

A fixed interest rate means your repayments stay the same for an agreed period, typically between one and five years. During this time, the lender commits to honouring that rate regardless of what happens to variable rates in the broader market.

Most lenders allow some additional repayments on fixed loans, usually capped at around $10,000 to $30,000 per year depending on the product. Exceed that cap and you'll trigger break costs, which are fees the lender charges to compensate for the interest they expected to earn over the remaining fixed period. Consider a buyer who secures a three-year fixed rate at 5.8% on a $650,000 loan for a post-war cottage near Hawthorne Park. Twelve months in, they receive an inheritance of $80,000 and want to pay down the mortgage. If their loan caps extra repayments at $20,000 annually, putting the full amount onto a fixed loan could generate break costs of several thousand dollars, depending on where variable rates sit at that time. If rates have dropped since they fixed, the break cost rises because the lender loses more anticipated income.

This is why understanding your likely financial position over the next few years matters more than just comparing advertised rates. If you're confident your income will stay steady with minimal savings capacity, a strict fixed loan works fine. If there's any chance of bonuses, inheritance, or salary increases you'd want to redirect toward the mortgage, you need to check the fine print on extra repayment limits before committing.

The Split Loan Option for First Home Buyers

Splitting your loan between fixed and variable portions gives you rate certainty on part of the debt while keeping flexibility on the rest. You might fix 50% or 60% of your borrowing and leave the remainder on a variable rate with full redraw or offset access.

In our experience, this structure suits first home buyers in Hawthorne particularly well because many are dual-income professionals who value predictable repayments but also want the option to reduce debt faster as their careers progress. A split loan means you can throw extra money at the variable portion without penalty while still protecting a chunk of your borrowing from rate rises.

The variable portion typically comes with an offset account, which functions like a transaction account where every dollar sitting in the offset reduces the interest charged on your loan. If you have $15,000 in your offset and a $300,000 variable loan component, you only pay interest on $285,000. This differs from redraw, where you make extra repayments directly onto the loan and can pull money back out if needed, subject to the lender's terms.

What Happens When Your Fixed Rate Period Ends

When your fixed term expires, your loan automatically reverts to the lender's standard variable rate unless you take action. That reversion rate is almost always higher than the discounted variable rates offered to new customers, sometimes by 0.5% or more.

Most borrowers either refinance to a new lender or renegotiate with their current lender around 90 days before the fixed period ends. Leaving it until the last minute limits your options because a full loan application can take four to six weeks to settle, and you'll want time to compare what's available in the market against what your existing lender offers to retain you.

If you've been making only minimum repayments during the fixed period and your property has increased in value, you might find yourself with more equity and access to products with lower rates or no Lenders Mortgage Insurance. Conversely, if rates have climbed significantly, you may face a payment shock when moving to variable unless you fix again. Planning for fixed rate expiry well in advance gives you control over that transition rather than being forced into whatever rate the lender assigns.

Low Deposit Options and First Home Loan Schemes

First home buyers often fixate on interest rates while overlooking how deposit size affects both the rate you'll be offered and your ongoing costs. Coming in with a 5% deposit under the First Home Loan Deposit Scheme removes the need for Lenders Mortgage Insurance, which can save $15,000 to $25,000 on a typical Hawthorne purchase in the $750,000 to $850,000 range.

However, lower deposit loans frequently come with slightly higher interest rates and fewer product choices, including more restrictive terms around extra repayments on fixed loans. A 10% deposit generally opens up more competitive pricing, while a 20% deposit gives you the widest range of loan features and the lowest rates. Buyers using a gift deposit from family still need to demonstrate genuine savings, typically three months of regular contributions, depending on the lender.

If you're weighing up whether to wait and save a larger deposit or enter the market sooner with 5%, run the numbers on both scenarios using a loan repayment calculator that factors in the rate differential and any LMI costs. The answer isn't always to wait, particularly in areas like Hawthorne where stock is limited and prices have shown consistent demand due to proximity to the CBD and the Oxford Street precinct.

Timing Your Application and Pre-Approval

You can lock in a fixed rate for 90 days from the point your loan is formally approved, not from when you start the application process. If you're searching for property in a tightly held pocket like Hawthorne, where quality homes near Hawthorne Road or close to the CityCat terminal move quickly, having pre-approval ready means you can move on the right property without worrying about rates shifting before settlement.

Pre-approval is conditional, meaning the lender has assessed your income, expenses, and credit position but hasn't verified the actual property yet. Once you go under contract, the lender conducts a full valuation and confirms all details before issuing formal approval. During that period, your locked rate holds. If settlement drags beyond 90 days due to building inspections or vendor delays, you may need to accept whatever rate applies at the new approval date, or negotiate an extension with your lender depending on their policies.

Getting your application in order early also means you've already considered your borrowing capacity realistically and factored in potential rate rises when the lender assesses whether you can service the loan. Lenders test your ability to repay at a rate typically 3% above the actual product rate, so even if you're fixing at 5.8%, they're assessing you as though you're paying closer to 8.8%. That buffer protects you from payment shock if rates climb after your fixed period ends, but it also means your borrowing limit might be lower than you expected.

Call one of our team or book an appointment at a time that works for you to talk through how fixed and variable loan structures apply to your specific situation and what's realistic for property in Hawthorne right now.

Frequently Asked Questions