Variable Rate Investment Loans: Everything You Need to Know

Variable rate investment loans give you access to repayment features that can adapt to your circumstances and let you take advantage of rate movements without penalty.

The decision between variable and fixed typically depends on whether you value repayment control and the ability to act on opportunities over the certainty of a locked rate. For Sydney investors holding properties in volatile rental markets or building a portfolio over time, the flexibility of a variable product often outweighs the appeal of fixed pricing.

Offset Accounts and How They Work for Investors

An offset account reduces the interest charged on your loan by offsetting the balance in a linked transaction account against your outstanding loan amount. If you hold $30,000 in a full offset account linked to a $600,000 investment loan, you pay interest on $570,000.

Consider an investor who refinanced a Marrickville apartment loan to a variable product with a full offset facility. They directed rental income into the offset account each fortnight and parked surplus cash from their primary income there as well. Over 18 months, the average offset balance reduced their effective borrowing by $22,000, which saved several thousand dollars in interest without requiring them to prepay principal or lose access to the funds. Because the loan remained interest-only, the entire interest saving was deductible and the offset funds remained liquid for the next deposit or an unplanned repair.

Not all lenders offer full offset on investor loans. Some provide partial offset, which reduces your interest charge by a percentage of the account balance rather than dollar-for-dollar. Others charge a higher rate or annual fee to include the offset facility. The annual cost difference can range from $200 to $400 depending on the lender and loan size. You need to weigh that cost against the interest you expect to save based on how much cash you realistically hold in the account.

Redraw Facilities and Access to Extra Payments

A redraw facility allows you to withdraw additional repayments you have made above the minimum. If your loan is principal and interest and you pay more than required, redraw gives you a way to access that surplus later.

The distinction matters for tax purposes. Extra repayments made on an investment loan and later redrawn for private use create a mixed-purpose loan. The interest attributable to the redrawn portion is not deductible. Redraw also differs from offset in that your surplus funds sit inside the loan rather than in a separate account, which can affect liquidity and how quickly you can access them.

Most variable investment products include redraw at no additional cost, but conditions vary. Some lenders require a minimum redraw amount, such as $500 or $1,000. Others impose delays or allow only a set number of free redraws per year. If you plan to access surplus funds regularly, confirm the conditions with your broker or lender before committing.

Making Extra Repayments Without Penalty

Variable rate loans allow you to make unlimited additional repayments without incurring break costs. This flexibility is particularly relevant for investors with uneven cash flow, such as those receiving bonuses, contract payments, or irregular rental income.

An investor holding a unit near Sydney University structured their loan as principal and interest on a variable rate. During peak rental periods when the property was leased to students, they directed the full rental income into the loan. When the tenant vacated over summer, they reduced repayments to the minimum and used offset funds to cover holding costs. Over three years, the additional repayments during high-income periods reduced the loan balance by $18,000 more than the standard schedule, without restricting their ability to hold cash during vacancies.

This approach works when you have discipline around repayment and a plan for how surplus cash will be used. Without structure, variable flexibility can become variable inaction.

Variable Rate Movements and Discounts

Variable rates move in response to changes in the Reserve Bank's cash rate and the lender's funding costs. When the cash rate rises, your repayments increase. When it falls, your repayments drop. The timing and size of the adjustment depend on the lender, but most pass through changes within a few weeks of the Reserve Bank announcement.

The rate you receive is typically the lender's published variable rate less a discount. Discounts range from 0.40 to 1.20 percentage points depending on your deposit size, loan amount, and whether the loan is packaged with other products. Larger deposits and higher loan amounts tend to attract bigger discounts. Investors with multiple properties financed through the same lender may be able to negotiate additional pricing.

Rate discounts are not locked in for the life of the loan. Lenders adjust their base variable rates independently of the Reserve Bank, and your discount can be revised at review if your loan no longer meets the lender's preferred profile. Some lenders maintain discounts more consistently than others. When comparing products, ask your broker about the lender's repricing history and whether the discount is contractual or subject to change.

Interest-Only Repayments on a Variable Rate

Most investment loans are structured as interest-only for a set period, usually between one and five years, with the option to extend or convert to principal and interest at the end of the term. Interest-only repayments lower your monthly outgoing and preserve cash flow, which improves serviceability when you apply for additional lending.

Interest-only periods on variable loans can usually be extended on request, subject to the lender's current policy and your financial position at the time. Some lenders allow up to 15 years of interest-only across the life of the loan, while others cap it at 10 or impose stricter criteria after the first term. Extensions are not automatic, and lenders reassess serviceability, rental income, and equity at each renewal.

If you plan to build a portfolio or access equity for further purchases, maintaining interest-only status on existing loans is often necessary to keep your debt servicing ratios within the lender's limits. When your interest-only term expires, confirm the extension process with your lender at least three months in advance to avoid a forced conversion to principal and interest.

Splitting Your Loan Between Variable and Fixed

Some investors split their loan into two portions, with one part on a variable rate and the other fixed. This structure lets you access variable rate features such as offset and redraw on one portion while locking in certainty on the other.

A split structure works when you want to reduce exposure to rate rises without losing all flexibility. You might fix 60 per cent of the loan and keep 40 per cent variable with offset, allowing you to park rental income and surplus cash in the offset account while protecting the majority of your repayments from upward rate movements. The optimal split depends on your cash flow, risk tolerance, and whether you expect to refinance or sell within the fixed term.

Keep in mind that a split loan creates two separate accounts with separate terms and conditions. Each portion may have its own fees, and any refinancing or restructure requires both portions to be dealt with. If you want to maintain simplicity, a single variable loan with offset may be a more practical choice.

Portability and Switching Properties

Portability allows you to transfer your existing loan to a new security without discharging and reapplying. Variable loans are generally portable, which can save on discharge fees, application fees, and valuation costs if you sell one property and purchase another within a short timeframe.

Portability is subject to the lender's assessment of the new property and your financial position at the time of transfer. Not all properties are acceptable security, and not all lenders process portability requests quickly enough to align with settlement deadlines. If you plan to sell and purchase within the same quarter, discuss the portability process with your broker early to confirm whether it is viable and whether it offers any cost advantage over a standard discharge and new application.

Loan Structure and Deductibility

How you structure your variable loan affects the deductibility of interest. If you use a variable loan with redraw to borrow for investment purposes, then later redraw funds for a private purchase, the interest on the redrawn portion becomes non-deductible. This creates a blended loan where some interest is deductible and some is not, complicating your tax return and potentially triggering a review by the ATO.

The cleaner approach is to keep investment borrowing separate from private borrowing. Use offset rather than redraw to hold surplus cash, and take out a separate loan for any private purpose rather than redrawing from an existing investment facility. Your accountant will have an easier time substantiating your deductions, and you avoid the risk of an ATO adjustment years later when the original purpose of each drawdown has become unclear.

If you are planning to use equity from an existing investment property to fund a deposit on another investment, ensure the new borrowing is documented correctly and linked to the new acquisition. The ATO's position is that interest is deductible based on the purpose of the borrowing, not the security provided. A loan health check with a broker and your accountant before accessing equity can save significant issues at tax time.

Choosing the Right Variable Product

The range of variable rate investment products across Australian lenders is broad. Rates differ, but so do offset terms, redraw conditions, interest-only policies, and serviceability approaches. A low rate is only useful if the product supports your investment strategy and the lender will lend you the amount you need.

When comparing options, focus on the effective cost after accounting for fees, the features you will actually use, and the lender's appetite for your property type and borrowing structure. A lender offering a competitive rate on a unit in a high-density area may have strict limits on interest-only extensions or require a larger deposit than a lender with a slightly higher rate but more accommodating policy.

Your broker has access to investment loan options from banks and lenders across Australia and can structure your application to align with the lender most likely to support your plans. Serviceability, deposit size, rental income treatment, and interest-only terms vary significantly between lenders, and the right product depends as much on your next step as it does on the property you are financing today.

Call one of our team or book an appointment at a time that works for you. We will review your circumstances, compare the variable rate products that suit your structure, and help you set up a loan that supports your investment strategy without locking you into features you do not need.

Frequently Asked Questions