Avoid These Pre-Approval Mistakes on Investment Loans

Pre-approval for an investment loan locks in your borrowing capacity before you start looking at properties.

The process is different to owner-occupier pre-approval because lenders assess investment loans against tighter serviceability rules, especially since the debt-to-income caps came into effect in February. If you work rotating shifts or pick up overtime when you can, the way your income is calculated matters more than the dollar figure on your payslip.

Applying Before You Understand the DTI Cap

Lenders can only write 20 per cent of new investor loans at a debt-to-income ratio of six times or higher. If your total debt sits at seven times your annual income, you will still find lenders willing to approve you, but your options narrow and the rates on offer may be higher. Pre-approval gives you time to check whether you are sitting above or below that six-times line, and whether paying down existing debt or restructuring your offset account makes sense before you sign a contract.

Consider a constable earning $95,000 annually with a $380,000 home loan and a $15,000 car loan. Total debt is already at 4.16 times income. Adding a $450,000 investment loan would push the ratio to 8.9 times. That puts the application into the restricted 20 per cent bucket. Some lenders will approve it, others will decline outright. Getting pre-approval early tells you which lenders are in play and whether you need to adjust the loan amount or clear the car loan first.

Estimating Rental Income Instead of Using a Signed Lease

Lenders will only credit 80 per cent of expected rental income when assessing serviceability, and most will not accept an estimate pulled from a real estate listing. If you are seeking pre-approval to buy an investment property that is currently tenanted, provide a copy of the existing lease. If the property is vacant, get a rental appraisal in writing from a licensed agent in that area. The appraisal needs to show a range, not a single optimistic figure.

In our experience, applications with vague rental income claims take longer to process and often come back with a reduced borrowing capacity once the lender's valuer provides their own assessment. A written appraisal from the outset avoids that delay and gives you a realistic borrowing figure to work with.

Submitting Payslips That Do Not Show Your Full Income Pattern

Most lenders will average your last three months of income, but some require six months or more if your pay varies. Shift penalties, allowances, and overtime are all assessable, but only if they appear consistently across the period the lender reviews. If you have recently moved from general duties to a higher-paid role, or if you have taken unpaid leave in the past quarter, the income figure the lender uses may be lower than you expect.

Provide at least six months of payslips when you lodge pre-approval, even if the lender only asks for three. If your base pay has changed, include a letter from your employer confirming the new rate and the effective date. This is particularly relevant for officers who have recently completed probation or moved into specialist roles where allowances form a larger portion of total income. You can read more about how lenders treat different income types in our guide on borrowing capacity.

Leaving Out Liabilities You Plan to Clear Before Settlement

If you intend to pay off a car loan or close a credit card before settlement, tell the lender during pre-approval and provide evidence that you can do it. Lenders will still include the liability in their initial assessment, but they can note the intended clearance and give you conditional approval on the basis that the debt is paid out before settlement. If you wait until after pre-approval to mention it, you may need to reapply or request a variation, which adds time you may not have once you are under contract.

Ignoring the Impact of Interest-Only Repayments on Serviceability

Most investors choose interest-only repayments to maximise deductible expenses and keep cash flow flexible. Lenders assess interest-only applications using principal-and-interest serviceability, meaning they calculate whether you could afford the loan if it were repaying both principal and interest from day one. The difference in repayment amount can be significant, and it reduces the loan amount you can service compared to an owner-occupier loan at the same rate.

If you are planning to use an interest-only loan structure, factor that serviceability gap into your pre-approval request. Do not assume the amount you are approved for will be the same as it would be for an owner-occupier purchase.

Applying Without Clarity on Negative Gearing Rules After July 2027

Properties acquired after 7:30pm on 12 May 2026 that are not eligible new builds will be subject to loss quarantining from 1 July 2027. That means any net rental loss can only be offset against other rental income or carried forward, not claimed against your salary. This does not affect your ability to borrow, but it changes the cash flow equation and may influence the type of property you target.

If you are seeking pre-approval now and intend to settle after mid-May, speak to a tax specialist before you lock in your strategy. Some investors are prioritising new builds to retain full negative gearing access, while others are adjusting their deposit size or loan structure to reduce reliance on tax offsets. The right answer depends on your circumstances, but pre-approval is the time to sort it out, not after you have made an offer. For more detail on how investment loan structures affect long-term portfolio growth, see our page on investment loans for police officers.

Choosing a Single Lender Without Comparing Policy Differences

Not all lenders treat shift work, rental income, or existing investment debt the same way. One lender might cap your borrowing at 80 per cent of the property value without charging Lenders Mortgage Insurance, while another requires LMI on anything above 70 per cent for investment purchases. One might accept 80 per cent of gross rent, another might apply a higher vacancy buffer if the property is in a regional area or a unit in an oversupplied precinct.

Pre-approval from a single lender tells you what that lender will do. Pre-approval through a broker who works across multiple lenders tells you what the market will do. If your application sits near a serviceability threshold or if your income structure is not straightforward, that comparison is the difference between a conditional approval and a decline.

Call one of our team or book an appointment at a time that works for you. We will run your numbers across lenders who understand shift work and investment lending, so you know exactly what you can borrow before you start looking at properties.

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