Why Should First Home Buyers Consider Split Loans?

Choosing between a fixed rate, variable rate, or split loan is one of the first genuine decisions you make when applying for your first home loan.

The decision affects how much you pay each month, whether you can make extra repayments without penalty, and how exposed you are to rate movements. For first home buyers in St Kilda, where entry-level apartments and period conversions typically sit well above $600,000, the structure you choose can influence your ability to pay down debt or respond to income changes over the next few years.

Fixed Rate Loans: Certainty on Repayments

A fixed rate loan locks your interest rate for a set period, usually between one and five years. Your repayment amount stays the same regardless of what happens to the Reserve Bank cash rate during that time.

Consider a buyer who secures a one-bedroom apartment near Acland Street using the First Home Guarantee with a 5% deposit. They fix their rate at 6.1% for three years. Even if the variable rate drops to 5.8% six months later, their repayment remains unchanged. The advantage is budgeting certainty. The disadvantage is limited flexibility: most fixed rate loans restrict extra repayments to around $10,000 to $30,000 per year, and switching or refinancing during the fixed period can trigger break costs that run into thousands of dollars.

Fixed rate loans do not usually come with an offset account, which means any savings sit separately and do not reduce the interest you pay. For a first home buyer building an emergency fund or saving for furniture and renovations, that can reduce the appeal of fixing the entire loan amount.

Variable Rate Loans: Flexibility and Offset Access

A variable rate moves up or down in line with lender decisions, which are usually influenced by the Reserve Bank. You are exposed to rate rises, but you also benefit when rates fall.

Variable loans allow unlimited extra repayments, full redraw access, and the option to link an offset account. An offset account is a transaction account where the balance reduces the interest charged on your loan. If you have a $500,000 loan and $20,000 in your offset, you only pay interest on $480,000. The savings compound over time, particularly if you are disciplined about directing income and bonuses into the offset rather than spending them.

For St Kilda buyers who work in the CBD or creative industries with variable income, an offset account can be more valuable than a slightly lower interest rate. It gives you access to your savings while still reducing your loan cost, which is useful when managing irregular income or freelance work.

Split Loans: Combining Stability and Access

A split loan divides your borrowing between fixed and variable portions. You might fix 50% of your loan at 6.1% for three years and leave the other 50% on a variable rate with an offset account.

In our experience, this structure suits first home buyers who want repayment certainty on part of their loan but also want the flexibility to make extra repayments or build an offset balance. You are not fully exposed to rate rises, but you are also not locked out of the benefits that come with a variable loan.

As an example, a buyer purchasing a two-bedroom apartment in St Kilda with a $550,000 loan might fix $275,000 and leave $275,000 variable. If they receive a $15,000 bonus or tax refund, they can put it into the offset linked to the variable portion without restriction. If rates rise, half their loan is protected. If rates fall, half their loan benefits immediately. The fixed portion provides a floor on their minimum repayment, which helps with long-term budgeting, while the variable portion allows them to accelerate repayments when income allows.

Some lenders charge two sets of fees for a split loan, so it is worth confirming the total cost structure during your home loan application.

How Offset Accounts Work With Split Loans

You can only link an offset account to the variable portion of a split loan. The fixed portion does not receive any offset benefit.

If you split your loan 70% fixed and 30% variable, your offset only reduces interest on the 30% variable portion. That limits the impact compared to offsetting against the full loan balance, but it still provides value if you maintain a decent offset balance. For buyers in St Kilda who are saving while repaying, particularly those eligible for stamp duty concessions that reduce upfront costs, the offset can be a place to park those savings and reduce interest at the same time.

The offset balance does not count as an extra repayment, so you retain full access to the funds. You can withdraw money at any time without needing lender approval, which is not the case with redraw facilities on some fixed loans.

What Happens When Your Fixed Period Ends

When the fixed term expires, that portion of your loan automatically reverts to the lender's standard variable rate unless you take action. The standard variable rate is usually higher than the advertised discounted variable rate offered to new customers.

Most borrowers either negotiate a new fixed rate, switch to a discounted variable product, or refinance to a different lender at that point. If you have built equity and maintained clean repayment history, you are often in a stronger position to negotiate a better rate than you could as a first home buyer with a 5% or 10% deposit.

For first home buyers using low deposit options like the First Home Guarantee, your loan-to-value ratio improves as you pay down the loan and as the property value increases. That can open access to better rates and remove any lender mortgage insurance component from the loan structure when you refinance.

Interest Rate Discounts and How They Apply

Most advertised variable rates include a discount off the lender's standard variable rate. The size of that discount depends on your deposit size, loan amount, and whether you are a new customer.

First home buyers with a 5% deposit typically receive a smaller interest rate discount than someone borrowing with 20% equity. The difference might be 0.2% to 0.4%, which can add up over time. As your equity position improves, you can request a rate review or refinance to access a better discount.

Some lenders also offer additional discounts if you have other products with them, such as credit cards or transaction accounts, though it is worth checking whether the bundled rate actually saves you money compared to a standalone home loan with a different lender.

Choosing the Right Split Ratio

There is no universal split ratio that works for everyone. The right balance depends on your income stability, savings discipline, and risk tolerance.

If you want maximum repayment certainty and are unlikely to make extra repayments in the first few years, fixing a larger portion such as 70% or 80% makes sense. If you expect bonuses, tax refunds, or other lump sums that you want to direct toward your loan, keeping 40% to 50% variable gives you the flexibility to do that without hitting fixed loan restrictions.

For St Kilda buyers in industries with performance-based income or creative work with project payments, a higher variable portion allows you to take advantage of good income months without penalty. For buyers in salaried roles with predictable income, a higher fixed portion might suit better, particularly if rate stability helps you commit to other financial goals like further study or starting a family.

Your mortgage broker can model different split ratios based on your income pattern and financial priorities, showing you how each structure would perform under different rate scenarios.

Accessing First Home Buyer Concessions in Victoria

Victoria offers a stamp duty concession for eligible first home buyers purchasing properties up to $600,000 with no duty payable, and a reduced rate on properties between $600,000 and $750,000. For established apartments and units in St Kilda, this concession can save several thousand dollars compared to a non-concessional purchase.

The First Home Owner Grant of $10,000 applies only to new homes valued up to $750,000, which in St Kilda typically means new apartments in developments rather than established period buildings or conversions. The grant can be used toward your deposit or to cover settlement costs, reducing the amount you need in genuine savings.

You can combine these state concessions with the federal First Home Guarantee, which allows you to borrow with a 5% deposit without paying lenders mortgage insurance. That can reduce your upfront costs significantly and allow you to enter the market sooner, though it also means starting with higher loan repayments relative to the property value.

When to Speak to a Mortgage Broker About Loan Structure

The best time to discuss loan structure is before you start looking at properties. Understanding how much you can borrow, what repayment structure suits your income, and which lenders offer the features you need helps you focus on properties within your realistic budget.

A mortgage broker can also identify lenders that allow you to adjust your split ratio during the loan term, or switch between fixed and variable without refinancing. Not all lenders offer that flexibility, and it is not something you can easily identify by comparing advertised rates online.

If you are ready to start the process or want to understand your options in more detail, call one of our team or book an appointment at a time that works for you.

Frequently Asked Questions