Top 10 Ways to Assess Risk on Investment Loans

Investment Loan Risk Assessment Starts with Serviceability

Lenders assess your capacity to service an investment loan by adding a 3 percentage point buffer to the actual rate, then testing whether your income can support repayments on that inflated figure. That buffer means a variable rate currently sitting around 6.5 per cent is assessed at 9.5 per cent for approval purposes. If rental income covers only 80 per cent of the property's potential, lenders apply that discount before counting it toward serviceability. The debt-to-income cap introduced in February now limits how much high-ratio lending a bank can write, so if your total borrowing sits at six times your gross income or above, you may find fewer lenders willing to compete for your business.

Consider a buyer earning $120,000 annually who already carries a $400,000 owner-occupied loan and wants to borrow another $500,000 for a Morningside apartment. Total debt would reach $900,000, or 7.5 times income. That borrower sits above the six-times threshold, and lenders can only allocate 20 per cent of their new investor lending to customers in that band. Some lenders will decline outright, others will price the loan higher, and a handful will write it at standard rates if other factors such as deposit size and repayment history are strong. Knowing where you sit relative to that cap before you sign a contract removes the risk of a declined application three weeks before settlement.

How the Negative Gearing Changes Affect Borrowing Decisions

From 1 July 2027, rental losses on established dwellings purchased after 12 May 2026 can only be offset against other residential rental income or carried forward to offset future rental income or capital gains. You cannot claim those losses against salary or wage income. Properties bought before that date, including those under contract at 7:30pm on 12 May 2026, retain full negative gearing under the existing rules until you sell. Eligible new builds, defined as dwellings constructed on previously vacant land or where the number of dwellings increases, remain fully negatively geared regardless of purchase date.

This distinction changes the after-tax cost of holding an established property. If you are a salaried borrower expecting a $15,000 annual rental loss and a marginal tax rate of 39 per cent, that loss currently delivers a $5,850 annual tax refund. After 1 July 2027, an established property bought in late 2026 produces no immediate refund. The loss accumulates and reduces tax on future rental profit or on capital gain when you sell, but the cash benefit is deferred. That deferral affects how much holding cost you can carry, which in turn affects how much you can borrow while still meeting the serviceability buffer. Lenders are beginning to adjust their assessments for post-July 2027 purchases, and some now apply a higher interest coverage test when the property is an established dwelling.

Capital Gains Tax Indexation Replaces the 50 Per Cent Discount

The 50 per cent capital gains tax discount for individuals, trusts and partnerships ends on 1 July 2027 for gains accrued after that date. It is replaced by cost base indexation using the Consumer Price Index and a minimum 30 per cent tax rate on real gains. Gains accrued before 1 July 2027 on properties you already own continue under the current discount rules. For eligible new build residential properties, you can elect between the 50 per cent discount and the indexation method with the minimum tax rate.

Indexation benefits long-hold investors in periods of higher inflation but can increase tax where inflation is low and gains are large. The minimum 30 per cent rate removes the benefit of accessing the lower personal tax brackets that some investors rely on when they retire or reduce working hours. If you plan to hold a property for 15 years and expect moderate capital growth, the change may have little effect. If you plan to sell within five years or expect outsized growth in a high-demand Brisbane precinct such as Teneriffe or New Farm, the shift from a 50 per cent discount to indexation can materially increase the tax on sale. That after-tax return feeds into whether the investment loan delivers the wealth outcome you are structuring it for.

Debt-to-Income Limits and Portfolio Lending

The 20 per cent cap on high debt-to-income lending applies separately to investor and owner-occupier portfolios. If a lender has already written a large volume of high-ratio investor loans in a quarter, they may pause new applications above six times income until the next reporting period, even if your financial position is strong. Non-significant institutions report on a four-quarter rolling basis, which smooths their capacity across the year, while the major banks report quarterly and can tighten suddenly.

Brokers monitor which lenders have capacity in real time, and that monitoring is particularly relevant in Brisbane where interstate investors have returned in volume since late 2025. A buyer competing for stock in suburbs such as Coorparoo or Woolloongabba may face multiple offers and tight settlement terms, and losing a week while your application sits in a lender's queue can mean losing the property. Structuring your borrowing capacity assessment before you start searching, and knowing which two or three lenders are most likely to write the loan at the amount you need, reduces settlement risk.

Vacancy Rates and Rental Income Assumptions

Lenders apply a discount to rental income when calculating serviceability, typically 20 per cent, to account for vacancy and management costs. That discount is fixed regardless of the actual vacancy rate in the suburb you are buying. Brisbane's inner-city apartment markets have recorded vacancy rates below 1 per cent through the first half of 2026, but lenders still assess rental income at 80 per cent of market rent. If the property is brand new or off-the-plan, some lenders apply a higher discount or exclude rental income altogether until the dwelling is tenanted and you provide a signed lease.

An investor buying a two-bedroom apartment in South Brisbane with a rental appraisal of $650 per week will have $540 per week, or $28,080 per year, counted toward serviceability. The same property assessed at 100 per cent would contribute $33,800. That $5,720 difference can reduce borrowing capacity by $80,000 to $100,000 depending on your other commitments and the lender's assessment rate. Where rental income is the primary source of serviceability, a 20 per cent haircut compounds the difficulty of meeting the buffer test, and investors in that position often need a larger deposit or a co-borrower to make the numbers work.

Interest-Only Repayments and Principal Reduction Risk

Interest-only repayment periods on investment loans are typically offered for five years, after which the loan reverts to principal and interest. That reversion increases the monthly repayment, and lenders assess serviceability at the higher principal and interest amount from day one, even if you elect interest-only initially. The difference between interest-only and principal and interest on a $500,000 loan at current variable rates is roughly $1,300 per month, and that gap must be serviceable at the buffered rate.

Investors who rely on interest-only cash flow to manage multiple properties need a plan for year six. Options include refinancing to a new interest-only term with a different lender, selling one property to reduce total debt, or increasing rent to cover the higher repayment. That plan should exist before you take the first loan, particularly if you intend to build a portfolio of three or more properties within five years. Lenders are less willing to refinance to a further interest-only term if your equity position has not improved or if rental income has not increased, and investors who assume automatic renewal have been caught by policy tightening in previous cycles.

Loan-to-Value Ratio and Lenders Mortgage Insurance

Lenders Mortgage Insurance is charged when your deposit is less than 20 per cent of the property value, and the premium is calculated on a sliding scale up to 95 per cent loan-to-value ratio. For investors, most lenders cap borrowing at 90 per cent, and a smaller number will lend to 95 per cent for specific property types or borrower profiles. The premium on a 90 per cent loan can range from 3 to 5 per cent of the loan amount depending on the lender and postcode, and that premium is capitalised into the loan rather than paid upfront.

A $550,000 loan at 90 per cent LVR attracts an insurance premium of $16,500 to $27,500, which increases the total borrowing to $566,500 to $577,500. That additional borrowing must also be serviced through the buffer, reducing how much you can borrow in the first place. Investors with a 15 per cent deposit often find that after accounting for Lenders Mortgage Insurance and stamp duty, the loan amount required pushes them into a higher LVR band or over the serviceability threshold. A 20 per cent deposit removes the insurance cost, lowers the rate, and increases lender appetite, and the difference in cash flow over the first three years often justifies waiting an additional six months to save the extra deposit.

Property Type and Lender Appetite in Brisbane

Not all property types attract the same lending terms. High-rise apartments over 15 storeys, properties with serviced apartment arrangements, and dwellings in complexes with fewer than six units can face higher rates, lower maximum LVR, or outright exclusion from some lenders. Studio apartments below 50 square metres are treated similarly. In Brisbane, the concentration of inner-city apartment construction since 2023 has led lenders to apply postcodes overlays in areas such as Fortitude Valley and South Brisbane, where a lender may cap total exposure or apply a higher serviceability test regardless of the individual property.

A buyer looking at a 48-square-metre studio in South Bank will find three or four lenders willing to write the loan at standard rates and 80 per cent LVR, while a 65-square-metre two-bedroom apartment in the same building will have ten or more lenders competing. The difference in rate can be 0.30 to 0.50 percentage points, and the smaller pool of lenders reduces your ability to refinance or negotiate a discount in future. If the property is intended as a long-term hold, that rate difference and refinancing constraint should weigh more heavily than the lower purchase price of the studio.

Body Corporate and Ongoing Cost Assessment

Body corporate fees on Brisbane apartments vary widely depending on the building's age, amenities and sinking fund balance. Newer buildings with pools, gyms and concierge services can charge $3,000 to $6,000 per quarter, while older walk-up blocks in suburbs such as Highgate Hill or Annerley may charge $800 to $1,500 per quarter. Lenders do not include body corporate fees in their formal serviceability assessment, but you still need to pay them, and high fees reduce the net rental yield and your ability to absorb a rate rise or vacancy period.

An investor borrowing $500,000 at interest-only repayments will pay roughly $2,700 per month in loan costs at current variable rates. If body corporate is $5,000 per quarter, that adds another $1,667 per month. Council rates, insurance and management fees bring the total holding cost to around $5,000 per month. A property renting for $650 per week generates $2,817 per month gross, leaving a $2,183 monthly shortfall before tax. That shortfall doubles if the loan reverts to principal and interest. Buyers who focus on purchase price and ignore ongoing costs often underestimate how much cash flow they need to support the holding period, and in a rising rate environment that miscalculation forces early sales at a loss.

Foreign Investment Rules and Buyer Competition

Foreign persons, including temporary residents, have been prohibited from purchasing established dwellings since 1 April 2025, with that ban now extended to 30 June 2029. The restriction applies to houses and existing apartments, and exceptions are limited to investments that significantly increase housing supply and certain employment or visa categories. Eligible new builds, defined as dwellings constructed on previously vacant land or where the number of dwellings increases, remain open to foreign buyers.

The restriction has reduced buyer competition for established stock in Brisbane's inner and middle-ring suburbs, particularly in areas such as Sunnybank and Sunnybank Hills where foreign investment was historically strong. Prices for established dwellings in those areas have grown more slowly than in outer suburbs and regional centres where domestic demand is concentrated. For investors, that difference creates opportunities in established stock where vendor expectations have not adjusted, but it also signals weaker future demand unless the ban is lifted or amended. New builds in the same suburbs continue to attract foreign capital, and that ongoing demand supports price growth and rental yields in buildings completed since 2025.

Call one of our team or book an appointment at a time that works for you.

Frequently Asked Questions