Fixed rate features on investment loans give you certainty over repayments for a set period, but they also come with conditions that can affect how you manage the property and your overall strategy.
If you're on a permanent visa and building a property portfolio in Australia, the way fixed rates work on investment loans matters more than it does on owner-occupied lending. You're dealing with rental income, potential vacancies, and tax planning that all need to work around the structure of the loan. A fixed rate might feel like stability, but the features attached to it can either support your goals or box you in at the wrong moment.
Why Fixed Rate Features Matter for Property Investors
A fixed rate locks in your interest rate for a chosen period, typically between one and five years. Your repayments stay the same regardless of what happens to variable rates during that time, which makes budgeting more predictable when you're relying on rental income to cover most of the loan.
But the trade-off is restriction. Most fixed rate investment loans limit how much extra you can repay each year, often to around $10,000 or $20,000 depending on the lender. If you receive a lump sum from selling another asset or want to pay down the loan faster, you'll hit that cap quickly. Some lenders also restrict access to offset accounts or redraw facilities while the rate is fixed, which means any surplus cash you hold doesn't reduce the interest you're paying.
Consider someone who bought a unit as an investment property and fixed the rate for three years. Twelve months in, they sold shares and wanted to put $50,000 against the loan to reduce interest costs. The loan allowed only $10,000 in additional repayments per year without triggering break costs, so the remaining $40,000 sat in a savings account earning interest that was fully taxable, rather than reducing the loan balance where the interest saving would have been deductible.
Interest Only Repayments on a Fixed Rate
Most investors choose interest only repayments to keep cash flow manageable and maximise their tax deductions, as only the interest portion is claimable. When you fix the rate, you're usually locking in both the interest rate and the repayment structure for that period.
If you fix for five years on an interest only basis, you'll stay on interest only for the full five years even if your circumstances change. That can work well if your plan is to hold the property long term and reinvest surplus cash into other assets. It becomes a problem if you want to switch to principal and interest repayments earlier to build equity or prepare for refinancing, because breaking the fixed term early usually means paying break costs.
Some lenders let you split the loan, putting part on a fixed rate and part on a variable rate. That gives you flexibility on the variable portion while still protecting part of your repayment from rate rises. It's a structure worth considering if you want the stability of a fixed rate but don't want to lose all your options during that period.
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Fixed Rate Lock and Rate Changes
When you apply for a fixed rate investment loan, the rate is usually locked in at the point your application is approved or when you formally accept the loan offer, depending on the lender. If settlement is several weeks away and rates drop in the meantime, you're still bound to the rate you locked in unless the lender offers a policy that lets you relock at a lower rate.
This timing matters if you're buying off the plan or building a new investment property, where settlement might be six or twelve months after you apply. Some lenders offer a rate lock for 90 days, and you may need to extend or relock if construction is delayed. Knowing how your lender handles rate locks during construction or extended settlement periods can save confusion and disappointment closer to the date.
Refinancing Out of a Fixed Rate Before It Ends
Break costs are the charge you pay if you want to exit a fixed rate loan before the fixed period ends. They're calculated based on the difference between your fixed rate and the lender's current cost of funds, adjusted for the time remaining on the fixed term.
If rates have risen since you fixed, break costs are usually zero or very low, because the lender can now lend that money out at a higher rate. If rates have fallen, break costs can run into tens of thousands of dollars, especially on large loan amounts with several years remaining.
In our experience, investors who fixed at low rates a few years ago and now want to refinance to access equity or move to a lender with offset features often face break costs that wipe out the benefit of switching. Waiting until the fixed term expires is usually the more practical option unless the benefit of refinancing is substantial enough to absorb the cost.
Portability and Splitting a Fixed Rate Loan
Portability refers to whether you can take your fixed rate loan with you if you sell the investment property and buy another one. Not all lenders allow this, and even when they do, the new property needs to meet their lending criteria and be settled before you sell the original property, which rarely lines up in practice.
If portability isn't available or doesn't suit your timeline, selling the property usually means breaking the fixed rate and paying any applicable break costs. That's another reason why splitting your loan between fixed and variable can give you more room to move. You can sell the property and repay the variable portion without penalty, while negotiating how to handle the fixed portion separately.
What to Ask Before Fixing an Investment Loan Rate
Before you lock in a fixed rate on an investment property loan, ask the lender how much extra you can repay each year without penalty, whether an offset account is available during the fixed period, and what their process is for calculating break costs if you need to exit early. Also confirm whether the rate you're quoted includes any ongoing fees or package discounts that only apply if you meet certain conditions, like holding a transaction account with that lender.
You should also clarify what happens at the end of the fixed term. Most loans automatically revert to the lender's standard variable rate, which is often higher than the discounted variable rate offered to new customers. If you're planning to refinance at that point, factor in the time it takes to compare investment loan options and complete an application so you're not caught paying an inflated rate for months while the process drags on.
Structuring Fixed Rates Around Your Investment Strategy
Fixing part or all of your investment loan should fit the broader plan, not just react to rate movements. If your goal is to build a portfolio and you'll likely want to access equity or refinance within a few years, locking in a long fixed term reduces your flexibility. If you're holding the property long term and want repayment certainty while you focus on other parts of your finances, a longer fixed term can support that.
For investors on a permanent visa, the ability to access investment loan options from a wide range of lenders means you're not limited to the major banks. Some smaller lenders and non-bank lenders offer more flexible features on fixed rates, including higher annual repayment limits or partial offset options. Working with a broker gives you visibility over which lenders offer the features that match how you want to manage the property, rather than choosing based only on the interest rate.
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Frequently Asked Questions
Can I make extra repayments on a fixed rate investment loan?
Most lenders allow limited additional repayments each year, often between $10,000 and $20,000, without triggering break costs. Exceeding that limit usually results in a charge based on the remaining fixed term and current rates.
What happens if I want to refinance before my fixed rate ends?
You'll likely face break costs if you exit the fixed rate early. These are calculated based on the difference between your locked rate and current rates, and can be substantial if rates have fallen since you fixed.
Do fixed rate investment loans come with offset accounts?
Some lenders offer offset accounts on fixed rate loans, but many restrict this feature or limit its effectiveness during the fixed period. Splitting your loan between fixed and variable can give you offset access on the variable portion.
Should I fix my investment loan rate if I plan to sell the property soon?
Fixing a rate when you plan to sell within a few years increases the risk of paying break costs if you exit early. A variable rate or a split structure usually offers more flexibility in that situation.
What happens to my fixed rate investment loan at the end of the fixed term?
The loan automatically reverts to the lender's standard variable rate, which is often higher than discounted rates offered to new customers. You can refinance or negotiate a new rate before the fixed term expires to avoid paying more than necessary.
