Everything You Need to Know About Investment Loan Rates

Fixed Rate Investment Loans Lock In Certainty But Limit Your Options

A fixed rate investment loan holds your interest rate steady for a set period, typically one to five years. You'll know exactly what your repayments will be during that time, which makes budgeting straightforward when you're managing rental income against loan costs.

The trade-off sits in what you give up. Most fixed rate products cap extra repayments at $10,000 to $30,000 per year. If you're holding an investment property in Cannon Hill and a tenant renews for another 12 months at a higher rate, you won't be able to throw that surplus income at the loan without triggering break costs. These costs apply if you refinance, sell, or try to repay beyond the allowed limit before the fixed term ends. The calculation ties to wholesale interest rate movements, and in a falling rate environment, the cost to exit early can run into thousands of dollars.

Consider an investor who fixed a $600,000 loan at 6.2% for three years. Eighteen months in, variable rates drop to 5.4%, and they want to refinance to capture the lower rate. The lender calculates the economic loss over the remaining term and charges a break cost that could exceed $15,000. That cost often wipes out any short-term saving from the lower rate, which is why fixed loans suit investors who value predictability over the option to react quickly to rate changes or portfolio shifts.

Variable Rate Investment Loans Give You Full Control Over Repayments

Variable rate investment loans move with the lender's standard rate, which changes in response to Reserve Bank decisions and funding costs. Your repayments adjust when the rate moves, so you carry the risk of increases but also benefit immediately when rates fall.

The advantage sits in flexibility. You can make unlimited extra repayments without penalty, access offset accounts to reduce interest on the full loan balance, and refinance or sell without break costs. If you're building a portfolio and expect to release equity, restructure loans, or sell within a few years, a variable loan won't lock you into a structure that costs money to exit.

Cannon Hill has a mix of older Queenslanders and newer townhouses, and vacancy rates in the area sit comfortably below 2%, which supports reliable rental income. In a scenario like this, an investor holding a variable rate loan on a three-bedroom townhouse near Wynnum Road can direct surplus rent into an offset account. That surplus reduces the interest charged each month without formally increasing the repayment, and the funds stay accessible if the property needs maintenance or you want to deploy capital elsewhere. Offset accounts aren't available on most fixed rate products, so this kind of short-term cash management only works on a variable structure.

Split Loans Let You Hedge Rate Risk Across Two Products

A split loan divides your borrowing between fixed and variable portions, usually in a ratio you choose at the time of application. You might fix 50% at a set rate and leave the other 50% variable, or split it 70/30 depending on your outlook and how much rate certainty you need.

Each portion operates independently. The fixed portion behaves like a standard fixed loan, with limited extra repayments and break costs if you exit early. The variable portion gives you full flexibility, offset access, and no penalty for additional repayments. The structure lets you lock in a base level of repayment certainty while keeping enough flexibility to respond to rental income changes, portfolio adjustments, or falling rates on the variable side.

In our experience, investors who split loans tend to fix between 40% and 60% of the total borrowing. Fixing more than 70% removes too much flexibility, and fixing less than 30% doesn't deliver enough certainty to justify the administrative overhead of managing two loan accounts. Lenders typically allow one to two splits per loan without charging multiple application or ongoing fees, but adding a third or fourth split can increase costs without adding much practical benefit.

Interest Only Repayments Increase Short-Term Cash Flow But Cost More Over Time

An interest only period lets you repay just the interest portion of the loan for a set term, usually one to five years. The loan balance doesn't reduce during that time, but your required monthly repayment drops, which frees up cash flow for other investments, renovations, or managing multiple properties.

Interest only is available on both fixed and variable investment loans, and most lenders offer it without adjusting the interest rate. Once the interest only period ends, the loan reverts to principal and interest repayments, and the required payment increases because you're now repaying both the interest and the principal over the remaining loan term.

Consider a $500,000 loan at a 6.0% interest rate. On an interest only basis, the monthly repayment sits at $2,500. Once the loan reverts to principal and interest with 25 years remaining, the repayment jumps to around $3,220 per month. That's a $720 increase, and if your rental income hasn't increased or you haven't adjusted your portfolio in the meantime, the cash flow impact can tighten quickly.

Interest only works when you're actively reinvesting the surplus cash flow or when rental yields are tight and you need to keep holding costs low while the property appreciates. It doesn't work if you're using the lower repayment to service a loan you couldn't otherwise afford, because the reversion to principal and interest is certain, and the repayment increase will arrive whether or not your circumstances have improved.

How Lenders Assess Investment Loan Applications Differently

Lenders assess investment loan applications using rental income to support serviceability, but they don't count the full amount. Most lenders apply a shading factor, typically 80%, which means they'll only recognise $400 of a $500 weekly rent when calculating how much you can borrow. That shading accounts for vacancy periods, maintenance costs, and the risk that rental income isn't as stable as employment income.

APRA requires all banks to assess your ability to service the loan at a rate at least 3.0 percentage points above the actual loan rate. If you're applying for a variable loan at 5.8%, the lender will test whether you can afford repayments at 8.8%. That buffer applies to both owner-occupier and investor borrowing, and it's the reason your maximum loan amount might sit lower than you expected, even when rental income is strong.

From February, APRA also limits banks to issuing no more than 20% of new lending at a debt-to-income ratio of six times your gross income or higher. If your household income is $120,000, that threshold sits at $720,000. Borrowing above that level is still possible, but the bank's quarterly allocation may be full, which can delay approval or push you toward a non-bank lender that isn't subject to the same restriction.

Proposed Negative Gearing and Tax Changes for Established Properties

From 1 July 2027, negative gearing will be limited to new builds if the proposed legislation passes. Losses on established residential properties acquired after 12 May 2026 will be quarantined and only deductible against residential rental income or capital gains. Excess losses carry forward, but you won't be able to offset them against salary or business income the way you can now.

Properties purchased before 12 May 2026 are exempt until sold, so if you already own an investment property in Cannon Hill or elsewhere, the change won't apply to that property while you hold it. New builds, shares, and commercial property will retain existing negative gearing treatment.

The capital gains tax discount is also proposed to shift from the current 50% discount to cost base indexation using the Consumer Price Index, with a minimum 30% tax rate on real gains. The change applies only to gains accruing after 1 July 2027, so any capital growth you've made up to that date will still be taxed under the current rules when you eventually sell.

These changes aren't yet law, and the detail may shift before or during passage through parliament. If you're weighing up whether to buy an established property or a new build, or whether to accelerate a purchase before mid-2027, speak to a tax specialist before you commit. Loan structuring and tax strategy need to work together, and assumptions you make now about deductibility or capital gains treatment could look different in 12 months.

Refinancing Investment Loans to Access Equity or Improve Loan Features

Refinancing lets you shift your loan to a different lender or restructure your existing loan to access equity, improve your interest rate, or add features like offset accounts. If your Cannon Hill property has increased in value and your loan balance has reduced, the equity you've built can be released and used as a deposit on a second investment property without selling the first.

Lenders will revalue the property and assess your current serviceability, including any changes to your income, expenses, or other debts. If you're refinancing to release equity, the lender will typically allow you to borrow up to 80% of the property's current value without paying Lenders Mortgage Insurance (LMI), or up to 90% with LMI if your serviceability supports it.

Refinancing a fixed rate loan before the term ends will trigger break costs, so the timing matters. If you're within six months of the fixed term expiring, it's usually worth waiting unless the benefit from refinancing is large enough to cover the break cost and still leave you ahead. If you're on a variable rate, there's no cost to exit, and you can refinance whenever a better rate or loan structure becomes available.

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