Top tips to pick fixed, variable or split investment loans

Why your investment loan structure matters more than the rate

The rate structure you choose for your investment loan affects how much flexibility you have to access equity, whether you can make extra repayments, and how your costs respond when the Reserve Bank moves. A fixed rate locks in certainty but removes most loan features. A variable rate gives you full access to offset accounts and redraw but exposes you to rate rises. A split loan divides your borrowing between both.

In Echuca, where many investors hold both residential and rural properties, the structure you pick often depends on whether you plan to use equity for a second purchase within two years or prefer stable repayments while building a buffer.

Fixed rate investment loans

A fixed rate investment loan holds your interest rate steady for a set period, typically one to five years. Your repayments stay the same regardless of what the Reserve Bank does, which makes budgeting more predictable if your rental income fluctuates or you hold multiple properties.

Most fixed rate products restrict extra repayments to around $10,000 to $30,000 per year depending on the lender. You usually cannot link an offset account, and breaking the loan early to refinance or sell triggers break costs calculated on the difference between your fixed rate and the current wholesale rate. If rates have fallen since you fixed, the break cost can run into thousands of dollars.

Consider an investor who fixed $450,000 at 5.89 per cent for three years in mid-2023. By early 2026, variable rates had dropped and they wanted to refinance to access equity for a second property. The break cost quoted was $11,400, which wiped out most of the refinancing benefit. They ended up waiting until the fixed term expired, delaying the second purchase by eight months.

Fixed rates suit investors who value certainty over flexibility, particularly those with tight cash flow or multiple interest-only loans where a rate rise would materially affect serviceability.

Variable rate investment loans

A variable rate investment loan moves up or down in line with lender pricing, which typically follows Reserve Bank decisions but is not directly tied to them. You can usually make unlimited extra repayments, access a full offset account, and refinance or sell without break costs.

Offset accounts are particularly valuable for investors. Any funds sitting in the linked transaction account reduce the balance on which interest is calculated, and because the interest saved is not considered income, it delivers a higher after-tax return than leaving the same money in a savings account. For someone on the top marginal rate, an offset account saving 6.5 per cent is equivalent to earning over 11 per cent in a taxable account.

Variable rates also allow you to leverage equity as property values rise. If you purchase an investment property in Echuca near the Murray River precinct and values increase, you can apply to access that equity without switching lenders or restructuring the loan. This is how many local investors fund deposits on second or third properties without saving another cash deposit.

The main risk is rate movement. A 1 per cent rise on a $400,000 loan increases repayments by roughly $330 per month. If your rental income is already tight or you hold several variable rate loans, a sharp rate cycle can push you into negative cash flow quickly.

Split loan structures for property investors

A split loan divides your borrowing into two or more portions, each with its own rate type and features. A common structure is 50 per cent fixed and 50 per cent variable, though you can split in any proportion that suits your circumstances.

The variable portion gives you access to offset and redraw, while the fixed portion stabilises part of your repayment. If rates rise, half your loan is protected. If rates fall, half your loan benefits and you retain flexibility on that portion without paying break costs to exit the fixed component.

Splits are particularly useful for investors planning to access equity within two to three years. You can fix part of the loan for security and keep the variable portion large enough to use as security for a top-up or second property purchase. This avoids the situation where your entire loan is fixed and you either pay break costs or wait until the fixed term expires.

In our experience working with Echuca clients, investors who split their loans tend to hold them longer because the structure adapts as their circumstances change. You are not locked into one rate type for the life of the loan, and at the end of each fixed period you can re-split in a different ratio depending on what the market is doing.

Interest-only versus principal and interest on investment loans

Most lenders offer interest-only periods of up to five years on investment loans, after which the loan reverts to principal and interest unless you apply to extend. Interest-only repayments are lower, which improves cash flow and can help with serviceability when applying for additional borrowing.

The tax treatment is identical whether you pay principal and interest or interest-only. The interest component is deductible either way. Paying down principal does not increase your deductions, so many investors prefer to keep repayments low and put surplus cash into an offset account linked to their owner-occupied home loan, where paying down non-deductible debt has a greater after-tax benefit.

Interest-only is not suitable for everyone. If you are relying on the property to be paid off by retirement or you are uncomfortable with debt staying flat, principal and interest may align better with your goals. The choice depends more on your broader wealth strategy than on the loan itself.

How proposed negative gearing changes affect loan structure decisions

From 1 July 2027, negative gearing on established residential property will be limited to new builds. Losses on properties purchased after 12 May 2026 will be quarantined and only deductible against rental income or capital gains from residential property. Excess losses carry forward but cannot be offset against wage or business income.

This affects loan structure because investors in established properties will have less tax relief to absorb rate rises or vacancy periods. A fixed rate provides more protection in this environment because your repayments are locked regardless of what the Reserve Bank does, and you will not face a surprise increase that pushes your loss beyond what rental income and future gains can absorb.

Investors purchasing new builds retain full negative gearing and can choose between the existing 50 per cent CGT discount and the new CPI-indexed cost base method. This makes variable or split structures more attractive for new build investors, as they can afford to take on rate risk knowing they have full tax relief.

Properties held before 12 May 2026 are grandfathered under the old rules until sold, so your loan structure decision is not affected by the proposed changes if you already own the property.

Choosing the right structure for your Echuca investment property

The structure that works depends on whether you plan to grow your portfolio, how much cash flow buffer you hold, and your comfort with rate movement. Investors buying their first property in Echuca's established residential areas often lean toward a split structure with at least 50 per cent variable to preserve offset access and future flexibility.

If you are purchasing a new build under the First Home Buyer Support Scheme or targeting depreciation benefits, a variable loan gives you the flexibility to pay down debt quickly as your income grows or to access rising equity without refinancing costs.

Fixed loans work well for investors with multiple properties who need stable repayments to maintain serviceability, or for those who have already built their portfolio and are not planning further purchases in the next few years.

The decision is not permanent. Most borrowers review their structure at least once during the life of the loan, either when a fixed term expires or when their circumstances change. The key is to start with a structure that supports what you plan to do in the next two to three years, not one that tries to predict the rate cycle.

If you are weighing up investment loan structures or want to review your current borrowing, call one of our team or book an appointment at a time that works for you.

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