Variable Rate Investment Loans and Extra Repayments

Making extra repayments on a variable rate investment loan reduces your debt but also reduces your tax deductions, which is usually the opposite of what an investor wants.

The distinction matters because investment lending works differently to owner-occupied lending. With an owner-occupied loan, paying down debt as quickly as possible makes sense. With an investment loan, the interest is deductible, so reducing the debt too quickly can leave you with less capacity to borrow in future when you want to buy your next home or upgrade. That's particularly relevant for Bairnsdale investors who may be building a portfolio locally or purchasing property in regional centres where rental yields remain stronger than metro markets.

Why Investors Keep Variable Rate Loans Fully Drawn

The loan amount you have outstanding determines the interest you pay, and that interest is what generates your tax deduction. If you make additional repayments directly into the loan and bring the balance down, the deductible interest falls with it. Once the balance is reduced, you can't usually redraw those funds for a different purpose without muddying the tax treatment. The ATO treats redrawn funds according to their new purpose, not the original loan purpose.

Consider an investor who owns a rental property in East Gippsland and decides to pay an extra $20,000 into the loan over two years. The interest bill drops, which sounds useful until they want to buy a new home. That $20,000 is now locked inside the investment loan. If they redraw it for a deposit on an owner-occupied property, the interest on the redrawn portion is no longer deductible because the funds are being used for private purposes. They've lost both the tax deduction and the flexibility.

Offset Accounts Let You Keep Cash Separate and Deductions Intact

An offset account linked to your variable rate loan reduces the interest you're charged without reducing the loan balance itself. The loan stays fully drawn, the interest deduction stays intact, and the cash in the offset account remains accessible for any purpose without triggering a tax issue.

If that same investor parks $20,000 in an offset account instead, the interest calculation drops by the same amount as if they'd made extra repayments, but the loan balance doesn't change. If they later want to use that cash for a deposit, a renovation, or another investment, they can withdraw it without affecting the deductibility of the loan. The offset account gives them the financial benefit of lower interest without the structural disadvantage of locking equity into a loan they can't cleanly access later.

That flexibility becomes especially valuable if you're planning to transition from an investment property to owner-occupier down the line, or if you're building a portfolio and need to prove serviceability across multiple loans. Lenders assess your position based on the debt you're carrying and the income you're earning, and keeping your investment loan structure intact makes future applications more predictable.

Variable Rates and the Case for Holding Cash in Offset

Variable rate loans usually come with offset accounts and unlimited additional repayment options, which is why they suit investors who want control over their cash flow. Fixed rate products rarely offer full offset, and when they do, the offset functionality is often limited or comes with a higher rate.

The variable rate environment also means your repayments will move with the Reserve Bank cycle. If rates fall, your repayments drop automatically. If rates rise, the offset account acts as a buffer without forcing you to refinance or restructure. You're not locked into a rate that might look expensive in twelve months, and you're not paying break costs to exit early.

For Bairnsdale investors, many of whom work in agriculture, healthcare, or government roles with predictable income, the variable rate structure allows them to direct surplus cash into the offset when they have it, and draw it back out when seasonal expenses or opportunities arise. That could mean holding cash for a rates bill, a body corporate levy, or simply keeping funds aside for maintenance.

How Legislative Changes Affect the Extra Repayment Decision

From 1 July 2027, new investment properties purchased after 7:30pm AEST on 12 May 2026 will be subject to quarantined negative gearing unless they're eligible new builds. Losses on those properties can't be offset against salary or wages, only against other residential rental income or carried forward. Properties already held at that date continue under the old rules.

This doesn't change the offset versus repayment question directly, but it does mean investors holding grandfathered properties have even more reason to preserve the deductibility of their loan in full. If you reduce the loan balance through extra repayments and later want to access that equity, any redrawn portion used for non-investment purposes loses its deduction. For an investor relying on negative gearing to reduce taxable income, that's a permanent loss.

If you're considering buying an eligible new build after the legislation takes effect, the ability to negatively gear that property under the existing rules makes preserving the full loan balance even more valuable. You want the interest deduction working at full capacity, which means keeping the loan fully drawn and any surplus cash in the offset.

When Extra Repayments Might Make Sense for an Investment Loan

There are scenarios where paying down an investment loan directly is the right move, but they're not common. If you're planning to sell the property in the near term and won't be replacing it with another investment, reducing the debt can lower your interest costs without affecting your future plans. If you've built a large portfolio and your borrowing capacity is no longer a constraint, reducing debt on older properties can improve cash flow across the portfolio.

Some investors also prefer to pay down debt as they approach retirement, particularly if they plan to live in the investment property or if they want to reduce their exposure before moving to a fixed income. In those cases, making extra repayments can simplify the wind-down, but it's a strategy that makes sense at the end of the investment phase rather than during accumulation.

For most investors still building wealth or planning to upgrade their own home within the next five to ten years, the offset account is the better tool. It gives you the same interest saving without the irreversible reduction in loan balance.

The ATO's View on Loan Purpose and Redraw

The ATO is clear that deductibility is determined by how borrowed funds are used, not by the security provided. If you redraw funds from an investment loan and use them for private purposes, the interest on that redrawn portion is not deductible. This applies even if the loan is secured by the investment property.

If you've made extra repayments into the loan and later redraw some of that amount to fund a holiday, a car, or a deposit on your own home, the ATO treats the redrawn portion as a new borrowing for a non-deductible purpose. The interest on the original loan remains deductible, but the interest on the redrawn amount does not. Keeping records that clearly separate the two becomes complicated, and many investors find themselves with a blended loan that delivers less tax benefit than they expected.

Offset accounts avoid this issue entirely because the cash never enters the loan. You're not redrawing, you're simply withdrawing your own funds. The loan balance never changes, the deductibility never changes, and there's no ATO reporting complexity.

Structuring for Flexibility in a Regional Market

Bairnsdale's property market includes a mix of older weatherboard homes, newer estates on the northern edge of town, and rural residential blocks on the outskirts. Rental demand is driven by local employment in health, education, and seasonal agricultural work, and vacancy rates tend to be lower than metro averages when managed properly.

Investors in this market often hold property for the long term, which makes loan structure more important than rate-chasing. A variable rate loan with a full offset account allows you to manage cash flow across different income periods without sacrificing deductibility or flexibility. If you're buying a second property or planning to move into a larger home while keeping your current place as a rental, keeping the loan balance intact means you can demonstrate maximum serviceability to lenders when the time comes.

If you're weighing up your investment loan options and want to understand how offset accounts and extra repayments fit your situation, call one of our team or book an appointment at a time that works for you at Trewin Mortgage Broking. We work with property investors across East Gippsland and can walk through the scenarios that matter for your portfolio.

Frequently Asked Questions