The easiest way to use fixed rates and offset accounts

You can't offset a fixed rate loan.

That's the short version, and it catches plenty of first home buyers off guard. You lock in certainty with a fixed rate, or you get flexible access to your savings with an offset account. You don't get both at the same time from the same portion of your loan. The decision isn't which lender offers the better deal on both features together, it's which feature matters more right now, or whether splitting your loan between the two makes sense for your situation.

Why offset accounts don't attach to fixed rate loans

Lenders price fixed rate loans by locking in their funding cost for the term you choose. An offset account reduces the interest you're charged by lowering the balance on which interest accrues. If your offset balance changes daily, the lender can't lock in a fixed rate because the loan balance they're charging interest on keeps moving. The two features work against each other structurally, so lenders don't offer them together.

Some lenders advertise fixed loans with a partial offset or redraw facility, but these aren't true offsets. Redraw lets you access extra repayments you've made, but those extra payments usually reduce the interest charged during the fixed period, which means the lender has already priced that reduction into the rate. A partial offset might allow a capped balance to offset against a fixed loan, but the cap is typically low enough that the feature adds limited value compared to a full offset on a variable portion.

Split loans let you use both features on the same property

A split loan divides your borrowing into two portions. One portion sits on a fixed rate, the other on a variable rate with an offset account attached. You nominate the split when you apply, commonly 50/50 or 70/30 fixed to variable, though any percentage works if the lender allows it.

Consider a buyer in Redcliffe purchasing a unit near the waterfront using the Australian Government 5% Deposit Scheme. They borrow $760,000 and split it 60% fixed at a locked rate and 40% variable with an offset account. They fix $456,000 to protect against rate rises over the next three years and keep $304,000 on variable with offset access. They redirect their savings into the offset account, which reduces the interest charged on the variable portion. The fixed portion keeps charging interest on the full $456,000 regardless of what's sitting in offset, but they've protected the majority of the loan from rate movements while keeping access to the flexibility they need for upcoming costs like furniture and a car upgrade.

The offset account only reduces interest on the variable portion, so if they build up $30,000 in offset, that $30,000 only offsets against the $304,000 variable portion, not the full loan. The structure gives them certainty on the larger portion and liquidity on the smaller one.

When a full variable loan with offset makes more sense

If you're building an offset balance quickly or expect irregular income, a full variable loan with offset access might cost you less than splitting. Every dollar in your offset account reduces the interest you're charged, and because the account balance can move up and down without penalty, you keep full access to your savings while still lowering your interest cost.

In our experience, first home buyers in the Moreton Bay Region with dual incomes and minimal dependents often build offset balances faster than they expect. If you're saving $3,000 to $5,000 a month and parking it in offset, that balance compounds quickly. A variable rate might sit higher than a fixed rate at the time you're comparing them, but the offset reduction can outweigh the rate difference within the first year if your savings pattern supports it.

The trade-off is rate exposure. If variable rates rise, your repayments rise with them unless your offset balance grows enough to absorb the increase. That's a real risk if rates move up sharply, but it's also a feature if rates move down, because your repayments drop immediately without waiting for a fixed term to end.

Fixed rate break costs are the other half of this decision

If you fix your loan and need to break the fixed term early, most lenders charge a break cost. The cost depends on how much rates have moved since you fixed and how much time remains on your fixed term. If rates have dropped since you locked in, the lender has lost the difference between what you're paying and what they can now lend that money out at, and they pass that loss to you as a break cost.

Break costs aren't predictable at the time you fix, and they can run into thousands of dollars if you need to sell, refinance, or pay down a large lump sum during the fixed period. Some lenders allow small extra repayments during a fixed term, commonly up to $10,000 or $20,000 per year, but anything above that cap triggers a break cost calculation. If you're planning to sell within a few years, receive an inheritance, or expect a significant bonus, a fixed loan might lock you into a cost you didn't anticipate.

Variable loans and the variable portion of a split loan don't carry break costs. You can pay off as much as you want, whenever you want, without penalty.

How to choose your split percentage

The right split depends on how much rate certainty you need and how much liquidity you want to keep. A higher fixed percentage protects more of your loan from rate rises but reduces the portion that benefits from offset. A higher variable percentage gives you more offset flexibility but exposes more of your loan to rate movements.

If your income is stable and predictable, and you're not building a large offset balance quickly, a 70% or 80% fixed split makes sense. You lock in repayments on most of the loan and keep a smaller variable portion for offset access and flexibility. If your income is variable, or you're expecting lump sums like bonuses or commissions, a 50/50 split or even a lower fixed percentage keeps more of your loan accessible to offset, which can reduce your interest cost faster than the fixed portion saves you through rate protection.

There's no universal split that works for everyone. The percentage that makes sense for your situation depends on your income pattern, your savings rate, your risk tolerance around rate rises, and how long you plan to hold the property. A broker can model different splits using your actual figures rather than assumptions, and that modelling usually shows a clearer difference between options than trying to guess which one sounds right.

Redcliffe's price point and how it affects your loan structure

Redcliffe's median unit and house prices sit comfortably within the Brisbane property price cap for the Australian Government 5% Deposit Scheme, which means most first home buyers in the area can access the scheme without needing a 20% deposit or paying lenders mortgage insurance. That also means your loan amount is likely high enough that the decision between fixed, variable, and split carries a meaningful dollar difference over the first few years.

The Moreton Bay Region has a mix of young families, retirees, and commuters working in Brisbane, and that demographic spread means the area supports a range of property types at different price points. If you're buying a unit near the Redcliffe waterfront or peninsula, your loan structure needs to account for strata fees and the likelihood that you'll move or upgrade within five to seven years. If you're buying a house further inland in Clontarf or Margate, your loan size and holding period might support a longer fixed term or a higher fixed split.

Location within Redcliffe affects your loan structure because it affects how long you're likely to hold the property and what your ongoing costs look like. A unit with high strata fees might benefit from a larger offset balance to manage cash flow, while a house with lower strata but higher maintenance costs might benefit from fixing a larger portion to lock in repayments and give you budget certainty.

Call one of our team or book an appointment at a time that works for you. We'll model your split options using your actual income, deposit, and savings rate so you can see the difference in real numbers rather than guesses.

Frequently Asked Questions