Beginner's Guide to Variable Rate Investment Loans

Variable rate loans are the most common finance structure for property investors because they offer daily access to equity, redraw and offset accounts without break fees.

Most buyers starting out assume a investment loan works the same way as an owner-occupier home loan, just with a higher rate. The structure can be identical, but the way you use the features changes entirely when your goal is to build a portfolio rather than pay down a single property.

Why Variable Rates Suit Property Investors

A variable rate moves up or down with market conditions and lender policy decisions. You pay the current rate each month and you can make extra repayments, access redraw or refinance without penalty.

Consider an investor who bought a unit in Joondalup on an interest-only variable loan at 6.2 per cent. Twelve months later, rates dropped to 5.8 per cent and her repayment fell by roughly $80 a month without her needing to refinance or apply for anything. At the same time, she redraws $15,000 from previous extra payments to cover the deposit on a second property in Baldivis. The whole process took two business days because the loan structure allowed it.

That combination of immediate rate relief and same-week access to capital is what makes variable loans the default choice for investors planning to grow a portfolio rather than hold one property long term.

Interest-Only Repayments and Cash Flow

Interest-only repayments mean you only pay the interest charge each month and the loan balance stays the same. Most lenders allow interest-only terms of one to five years on investment loans, after which the loan converts to principal and interest unless you apply for an extension.

The benefit is lower monthly repayments, which matters when you are balancing rental income against mortgage costs and body corporate fees. If rental income covers most of the interest and you are not forced to add principal repayments on top, the property is closer to neutral or positive cash flow.

Interest-only does not reduce the loan balance, so you are not building equity through repayments. Equity growth comes from capital appreciation or further deposits. For investors using negative gearing or planning to sell within a medium timeframe, that trade-off usually makes sense.

Offset Accounts and Redraw Facilities

An offset account is a transaction account linked to your loan. The balance in the offset reduces the interest charged without reducing the loan amount itself. If you have a loan of $400,000 and $20,000 sitting in a linked offset, you only pay interest on $380,000.

A redraw facility lets you withdraw extra repayments you have already made above the minimum. If your minimum monthly repayment is $2,000 and you paid $2,500 for six months, you have $3,000 available to redraw.

Offset accounts tend to offer more flexibility because the money never technically goes into the loan, so there are fewer lender conditions on withdrawing it. Redraw can be restricted or removed entirely if the loan goes into arrears or if the lender changes policy, though that is uncommon with standard variable products.

For property investors, offset accounts also preserve the deductibility of interest. If you deposit savings into the loan itself to reduce the balance, then redraw that money later for a private purpose like a car or holiday, the portion of interest tied to that withdrawal is no longer deductible. With an offset, the loan balance never changes and all interest remains linked to the investment property.

Rate Discounts and Annual Reviews

Variable rate loans are typically priced as the lender's standard variable rate minus a discount. That discount depends on your loan size, deposit and whether you have other products with the lender such as packaged accounts or insurance.

In our experience, investors with a loan-to-value ratio below 80 per cent and a loan above $300,000 tend to receive deeper discounts than those borrowing smaller amounts or using Lenders Mortgage Insurance. The published rate might be 6.5 per cent, but the rate you actually pay could be 6.1 per cent after the discount is applied.

Discounts are not locked in forever. Most lenders review them annually or when you refinance. If your loan has been open for three years and you have not asked for a review, your discount might still be 0.7 per cent while new customers are being offered 1.1 per cent. That gap compounds quickly.

This is one reason refinancing remains common among investors even when they are happy with the lender. The act of refinancing or threatening to leave often unlocks a better discount than simply asking for a rate match.

Accessing Equity Without Refinancing

Most variable rate loans allow you to request a loan increase once the property has gained enough value to keep your loan-to-value ratio within the lender's policy.

If you bought a property for $500,000 with a $400,000 loan and it is now worth $600,000, you have roughly $200,000 in equity. The lender will typically allow you to borrow up to 80 per cent of the new value without Lenders Mortgage Insurance, which is $480,000. That gives you access to an additional $80,000 without refinancing to a new lender.

The process involves a new valuation, a credit check and an updated serviceability assessment. The lender needs to confirm you can still afford the higher repayments, especially under the current 3 percentage point buffer applied by the regulator.

That $80,000 might then be used as a deposit for a second property, renovation costs to increase rent, or even to cover holding costs during a vacancy. Because the loan remains variable, there are no break costs and the additional funds are usually available within two to three weeks if the valuation and credit assessment go through without issues.

How Negative Gearing Works Under Current Rules

Negative gearing allows you to offset rental losses against your taxable income from other sources such as salary or business income. If your property costs you $8,000 more per year than it earns in rent, that $8,000 can reduce your taxable income and lower your overall tax bill.

From 1 July 2027, rental losses on properties bought after 7.30pm on 12 May 2026 will be quarantined and can only be offset against other residential rental income or carried forward. They cannot be offset against wages. Properties purchased before that date, or those under contract before that time, remain under the existing rules and can still be negatively geared in the traditional sense.

For investors in WA buying now or in the next twelve months, the transitional rules mean you can still access full negative gearing until 30 June 2027 even if you settle after 12 May 2026. After that, only eligible new builds will allow losses to be offset against salary.

This does not stop you from claiming deductions for interest, body corporate fees, council rates or depreciation. Those remain claimable expenses. The change only affects whether a net rental loss can reduce tax on non-rental income.

Variable rate loans give you the flexibility to adjust your strategy as these rules take effect. You can switch between interest-only and principal-and-interest, make lump sum repayments if you want to reduce the loss, or access equity to buy a new-build property that remains eligible for unrestricted negative gearing.

Switching Between Interest-Only and Principal-and-Interest

Most lenders allow you to convert from interest-only to principal-and-interest or vice versa without refinancing. The switch can usually be done with a phone call or online request, though moving back to interest-only after the initial term ends will require a new application and serviceability check.

This flexibility is useful if your income changes, if you want to reduce the loan balance before selling, or if rental income improves and you can afford higher repayments without affecting cash flow.

Some investors start on interest-only to keep repayments low while building the portfolio, then switch one or two properties to principal-and-interest once they have enough rental income across the portfolio to absorb the higher repayments. That approach reduces total debt over time without forcing you to sell.

Variable loans support that kind of mid-course adjustment without penalty. A fixed loan would require you to choose the repayment type up front and lock it in for the fixed period.

What to Watch for in the Product Disclosure

Not all variable rate products offer the same features. Some lenders restrict redraw on interest-only loans. Others cap the offset balance or charge a monthly account fee. A small number still do not allow loan increases without a full refinance.

Before you settle, confirm in writing whether the loan includes unlimited redraw, a linked offset with no cap, and the ability to request equity release or a top-up once the property value increases. Also check whether the interest-only period can be extended and how many times.

Lenders also vary in how they calculate serviceability for loan increases. Some will accept 80 per cent of rental income when assessing whether you can afford the higher repayments. Others use 100 per cent if you provide a lease and payment history. That difference can determine whether your equity release is approved or declined.

If portfolio growth is part of your strategy, those details matter more than the initial interest rate. A loan that is 0.1 per cent cheaper but does not allow offset or equity access will cost you more in the long run if it blocks your next purchase.

When a Split Loan Makes Sense

A split loan divides your borrowing between a fixed portion and a variable portion. You might fix 50 per cent of the loan at 5.9 per cent for three years and leave the other 50 per cent variable at 6.2 per cent.

The fixed portion gives you rate certainty and predictable repayments on half the loan. The variable portion preserves access to offset, redraw and equity release without break costs.

For investors holding property in areas with strong rental demand like Applecross or Perth CBD, a split structure can smooth out cash flow while still allowing you to access capital when the next opportunity appears. You are not fully exposed to rate rises, but you are not fully locked in either.

The downside is complexity. You will have two loan accounts, two sets of statements and two interest calculations each month. Some lenders also apply higher fees to split loans or limit the features available on the fixed portion.

If you want rate protection but are not sure a full fixed loan suits your plans, a 50/50 or 60/40 split is worth considering. Just make sure the variable portion is large enough to give you meaningful access to redraw or offset.

Call one of our team or book an appointment at a time that works for you if you want to compare variable rate products across lenders and work out which structure fits your next purchase.

Frequently Asked Questions