Top Strategies to Compare Investment Loan Options

Comparing investment loan products means assessing rate type, repayment structure, and borrowing capacity together rather than ranking offers by interest rate alone.

Chadstone sits within a precinct dominated by unit developments and townhouses near the shopping centre, with older detached homes further south toward Oakleigh East. Investors in this area often refinance to release equity or consolidate debt as property values shift, and the loan structure chosen at purchase determines how much flexibility remains when that need arises. A loan comparison that considers only the advertised rate ignores the features that matter when your portfolio expands or market conditions change.

Fixed or Variable Rate for Investor Borrowing

Variable rates allow unlimited additional repayments and redraw access without penalty, while fixed rates lock in certainty but restrict prepayment and typically charge break costs if you exit early. For investment property finance, the choice depends on whether you plan to use surplus rental income to reduce debt or preserve cash flow for further purchases.

Consider a buyer who acquires a two-bedroom unit near Warrigal Road with a 20 per cent deposit. They choose a variable rate because they intend to buy a second property within two years and need the ability to redraw funds for the next deposit. If they had fixed the rate, they would face either a prepayment penalty or an inability to access those funds without refinancing. The flexibility cost them around 0.25 per cent more in rate, but it preserved the option to act when the next opportunity appeared.

Some lenders offer split loans, where a portion is fixed and the remainder variable. This structure suits investors who want rate protection on part of the debt while retaining access to offset or redraw on the rest. When comparing investment loan options, confirm whether the lender calculates the loan-to-value ratio on the total facility or separately on each split, as this affects how much you can borrow.

Interest Only or Principal and Interest Repayments

Interest-only repayments reduce monthly costs and preserve cash flow, but they do not reduce the loan balance. Principal and interest repayments cost more each month but build equity over time and may attract a lower interest rate from some lenders.

Most lenders allow interest-only terms of up to five years on investment property loans, after which the loan reverts to principal and interest unless you apply to extend. The serviceability assessment at application assumes the loan will revert, so your borrowing capacity is calculated using the higher repayment figure even if you choose interest-only initially. If your income or circumstances change before the interest-only period ends, you may not qualify to extend it.

In our experience, investors who plan to hold property long-term often start with interest-only to maximise deductions and cash flow, then switch to principal and interest once other debt is cleared or rental income increases. The ability to switch without refinancing depends on the lender, and not all products allow it. When comparing loan features, confirm whether you can move between repayment types during the loan term and whether any fees apply.

Loan to Value Ratio and Lenders Mortgage Insurance

The deposit you provide determines the loan-to-value ratio, which in turn affects the interest rate you receive and whether you pay Lenders Mortgage Insurance. Most lenders will lend up to 90 per cent of the property value for investment purchases, but rates improve at 80 per cent LVR and again at 70 per cent.

LMI applies when your deposit is less than 20 per cent. The premium is capitalised into the loan amount, which increases your borrowing and your repayments. For a unit in Chadstone, LMI on a loan at 90 per cent LVR might add several thousand dollars to the amount borrowed. Some lenders waive or reduce LMI for certain professionals or existing customers, so this becomes a relevant comparison point if your deposit sits between 10 and 20 per cent.

If you are using equity from an existing property rather than cash savings, the combined LVR across both properties determines serviceability and whether LMI applies. A broker can structure the loan to keep the investment loan separate or cross-securise it with your home, depending on which approach delivers lower costs or higher borrowing capacity. Cross-securisation reduces flexibility later if you want to sell one property without affecting the other, so the decision should be made with future portfolio growth in mind, not just the immediate application.

Rate Discounts and How They Vary Between Lenders

The advertised rate for an investment loan is rarely the rate you receive. Lenders apply discounts based on loan amount, LVR, whether you hold other products with them, and in some cases your profession or employer. Two lenders with identical advertised rates may offer different final rates depending on these variables.

A lender might advertise a variable investment rate of 6.50 per cent but offer a 0.60 per cent discount for loans above a certain threshold and an additional 0.10 per cent discount if you hold an offset account. Another lender might discount more heavily for lower LVR loans but offer no discount for product bundling. The difference can amount to 0.30 per cent or more, which on a loan amount of half a million dollars equates to over $1,500 per year.

When you refinance an investment loan, the rate discount often resets based on the new loan amount and current promotions, which may be more or less favourable than your existing arrangement. Some lenders also reduce the discount over time or remove it entirely after a honeymoon period, so the comparison should account for the rate after any introductory period ends, not just the first year.

Offset Accounts and Redraw Facilities

An offset account reduces the interest charged by offsetting the balance in a linked transaction account against the loan balance. A redraw facility allows you to withdraw any additional repayments you have made above the scheduled minimum. Both features reduce interest costs, but they operate differently and have different tax implications.

For investment property, rental income is often deposited into an offset account rather than paid directly onto the loan. This preserves the deductibility of interest on the full loan amount while reducing the interest charged. If you make additional repayments directly onto the loan and then redraw them, the redrawn portion may not be deductible if used for personal purposes. An offset account avoids this problem because the loan balance does not change.

Not all lenders offer offset accounts on investment loans, and those that do may charge a higher interest rate or annual fee. When comparing products, calculate whether the interest saved by using an offset exceeds the cost of the feature. For loans with minimal surplus cash flow, the cost may outweigh the benefit, and a no-frills variable loan with a lower rate may be more suitable.

Serviceability Assessment and Borrowing Capacity

Lenders assess your ability to service an investment loan by adding your existing debts to the proposed loan repayment, then comparing the total to your income. Rental income from the investment property is included, but most lenders only count 80 per cent of the projected rent to account for vacancy and maintenance costs.

APRA requires all banks and authorised deposit-taking institutions to assess your loan at an interest rate at least 3.0 percentage points above the actual product rate. This buffer means your serviceability is calculated using a rate above 9.0 per cent even if the loan rate is 6.0 per cent. Non-bank lenders are not subject to this requirement, so they may approve a higher loan amount for the same income and debt profile.

From February this year, lenders also face a limit on lending more than 20 per cent of their new mortgages at a debt-to-income ratio of six times income or more. If your income is $100,000, this threshold sits at $600,000 in total debt. Lenders may tighten criteria or decline applications that push them over this limit, even if you meet their serviceability test. When comparing lenders, a mortgage broker in Chadstone can identify which institutions have capacity under the limit and which are restricting approvals.

Tax Deductions and Claimable Expenses

Interest on an investment loan is deductible against rental income, along with other costs such as property management fees, insurance, council rates, and depreciation. The structure you choose at the outset affects how much of the interest remains deductible over time.

If you refinance an investment loan and withdraw equity for personal use, the interest on that portion is no longer deductible. Similarly, if you pay down the loan and then redraw funds for a personal expense, the redrawn amount may lose deductibility. Keeping the investment loan separate from any personal borrowing and using an offset account rather than redraw helps maintain the deduction.

From July next year, negative gearing on established residential properties acquired after mid-May this year will be quarantined, meaning losses can only be offset against residential rental income or capital gains rather than other income. Properties purchased before that date are unaffected. For investors comparing loan options now, the proposed change does not alter the loan structure itself but may affect the after-tax return depending on whether the property generates positive or negative cash flow. New builds retain full negative gearing treatment under the proposed rules, so investors purchasing off-the-plan units in developments near Chadstone may have more favourable tax treatment than those buying established stock.

Loan Features That Matter When Your Portfolio Grows

As your portfolio expands, the ability to increase your loan limit, add properties to the same facility, or split security between loans becomes relevant. Not all lenders allow you to increase the loan amount without a full refinance, and those that do may require a revaluation and serviceability reassessment.

Some lenders offer portfolio loans, where multiple properties are held under a single facility with one interest rate and one set of fees. This structure reduces administration and may improve the rate, but it means all properties are cross-securised, so selling one property requires the lender to release that security while retaining the others. Other lenders prefer separate loans for each property, which increases flexibility but may result in higher fees and varied interest rates.

When comparing loan products, consider not only the current purchase but also whether the lender and loan structure will accommodate future growth. A loan with a slightly higher rate but more flexible features may cost less over the life of your portfolio than a product with a lower rate and limited options.

Call one of our team or book an appointment at a time that works for you to compare investment loan products across banks and lenders and structure your borrowing to suit both your current purchase and your long-term property investment strategy.

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