Variable Rate Investment Loans and Features to Consider

A variable rate investment loan offers flexibility that can reduce the interest you pay and adapt to changing circumstances as your portfolio grows.

Investors often choose variable rates because they want access to their equity, the ability to make extra repayments without penalty, and the option to refinance when a different lender or product becomes more suitable. Unlike fixed rates, where most features are locked or restricted during the fixed period, variable products are built to move with your strategy.

Offset Accounts and How They Reduce Interest

An offset account is a transaction account linked to your loan where the balance reduces the interest charged on your debt. If you have a $500,000 loan and $30,000 sitting in a full offset account, you pay interest on $470,000.

Consider an investor who refinances an older loan without offset to a variable product with full offset. They hold $40,000 in savings that previously sat in a term deposit earning taxable interest. By moving that balance into offset, they reduce their loan interest by approximately the variable rate on $40,000 each year, and because the benefit comes as reduced interest rather than earned income, there is no additional tax. For someone on a marginal rate above 37 cents in the dollar, that difference is significant. Offset is particularly useful when rental income accumulates between quarterly tax instalments or when you are holding funds for a future deposit on the next property.

Redraw Facilities and Access to Extra Repayments

A redraw facility lets you withdraw additional repayments you have made above the required minimum. If your scheduled repayment is $2,800 per month and you pay $3,200, that extra $400 sits in the loan and can usually be redrawn online or by request.

Redraw is not the same as offset. The balance in redraw reduces your loan principal immediately, so you pay less interest from the day the funds clear. However, some lenders restrict the number of redraws you can make each year, charge fees per transaction, or require a minimum redraw amount. Others allow unlimited free redraw through online banking. If you expect to access funds regularly, confirm the redraw terms before settling the loan.

For investors using interest-only repayments, redraw works differently. Extra payments are typically held in a separate redraw balance rather than reducing principal, and you can withdraw them subject to the lender's conditions. This structure lets you park surplus cash in the loan to save interest while maintaining access for future portfolio expenses.

Rate Discounts and How They Are Applied

Most lenders advertise a standard variable rate, then apply a discount based on loan size, LVR, and whether the property is owner-occupied or investment. The discount might range from 0.50 to 1.00 percentage points depending on these factors.

Investor interest rates are typically 0.15 to 0.30 percentage points higher than equivalent owner-occupier rates because of the higher risk weighting applied by the regulator. However, the gap narrows with larger loan amounts and lower LVRs. An investor borrowing $600,000 at 70 per cent LVR will usually receive a larger rate discount than someone borrowing $300,000 at 85 per cent LVR on the same product.

Rate discounts are not locked. If you refinance or negotiate with your current lender, the discount can change. Many investors refinance every few years to access better pricing or product features as their equity grows and their portfolio matures.

Interest-Only Repayments and Cash Flow Management

Interest-only repayments reduce your monthly outgoing, which can be useful when rental income does not fully cover the loan cost or when you want to direct surplus cash toward the next deposit. Most lenders offer interest-only periods of one to five years on investment loans, after which the loan reverts to principal and interest unless you request an extension.

During the interest-only period, none of your repayment reduces the loan balance. You are not building equity through repayments, but you are not required to. If the property appreciates, your equity grows regardless. If you are negatively gearing the property and relying on capital growth as your return, interest-only repayments allow you to claim the full interest amount as a deduction while keeping your cash outlay lower.

Under the negative gearing changes taking effect from 1 July 2027, properties acquired after 7:30pm AEST on 12 May 2026 will have rental losses quarantined unless they are eligible new builds. Interest-only repayments will remain available, but the tax treatment of losses will differ depending on when and what you purchased. Properties held before that date continue under existing rules.

Portability and Splitting Your Loan Structure

Portability lets you transfer your loan to a different property without discharging and reapplying. If you sell your current investment property and buy another within a short window, some lenders allow you to port the existing loan and retain the rate, features and any discount you negotiated.

Not all variable loans are portable, and those that are usually require the new property to be purchased within 90 to 180 days of selling the old one. Portability can save time and the cost of discharge and application fees, but you will still need to meet serviceability for the new purchase and provide a valuation.

Splitting your loan lets you divide the total debt into separate accounts with different features or rates. You might hold 70 per cent on a variable rate with offset and 30 per cent on a fixed rate for stability. Each split is a distinct facility with its own terms, repayment type and account. Splitting is common when refinancing a portfolio to balance flexibility and cost certainty, particularly when you expect rates to move but want to retain access to offset on part of the debt.

LVR, Serviceability and How They Affect Product Choice

Your loan-to-value ratio and debt-to-income ratio determine which products and features are available. Most lenders cap investment lending at 90 per cent LVR, and offset or redraw is sometimes restricted above 80 per cent LVR depending on the lender's policy.

APRA's DTI cap limits how much debt you can hold relative to your gross income. From 1 February 2026, lenders can only approve 20 per cent of new investor loans at a DTI of 6 times or greater. If your total debt across all properties is $900,000 and your gross household income is $140,000, your DTI is approximately 6.4 times. You may still be approved, but you fall within the lender's restricted allocation. Each lender manages that allocation differently, so one might decline where another approves.

Serviceability is tested using a buffer of three percentage points above the product rate, so a variable rate loan priced at 6.20 per cent is assessed as though you are paying 9.20 per cent. This buffer applies to all new lending and refinances, and it affects how much you can borrow or how many properties you can add to your portfolio before serviceability becomes the binding constraint.

When to Consider Refinancing Your Investment Loan

Refinancing makes sense when your current loan no longer suits your portfolio or when another lender offers a lower rate, different features or higher borrowing capacity. Investors typically refinance to release equity for the next purchase, to consolidate multiple loans, or to move from interest-only to principal and interest as the portfolio matures.

If your property has increased in value and your LVR has dropped, refinancing can unlock equity without selling. That equity can then be used as a deposit on another property, subject to serviceability. Many lenders will lend up to 80 per cent of the current value without requiring mortgage insurance, so a property purchased at $600,000 and now worth $750,000 gives you access to an additional $30,000 in equity at that threshold.

Refinancing also allows you to renegotiate your rate discount and consolidate loans that were originally written with different lenders. Holding multiple loans across multiple lenders can make portfolio management more complex, and consolidating them under one lender with a single offset account and online portal can reduce administration and improve cash flow visibility.

Call one of our team or book an appointment at a time that works for you to discuss which variable rate features align with your property investment strategy and current portfolio structure.

Frequently Asked Questions