Everything You Need to Know About Investment Loan Approval

Lenders assess investment loan applications differently to owner-occupied finance, and FIFO fixed plant operators face an extra layer of scrutiny when your income pattern doesn't fit the template.

The approval hinges on three factors: how the lender treats your rostered income, whether they'll accept projected rental income to strengthen your servicing position, and what deposit you can show without relying on equity that hasn't been confirmed. Most applications stall because one of those three isn't structured to match what the credit policy requires.

How Lenders Assess FIFO Income for Investment Borrowing

Your income is assessed on a 12-month average, and the lender applies a 20 per cent discount to allowances that aren't guaranteed in your contract. Base salary and rostered overtime usually get full credit. Living-away-from-home allowances, shift penalties that vary with rosters, and performance bonuses are either shaded or excluded depending on the lender's appetite for non-permanent FIFO roles.

The serviceability buffer sits at 3 percentage points above the product rate, so if the investor variable rate is 6.5 per cent, your repayments are calculated at 9.5 per cent. That calculation assumes principal and interest repayments even if you're applying for an interest-only period. Rental income is shaded by 20 per cent to allow for vacancy and maintenance, so a property returning $600 per week adds $480 to your servicing position.

Consider a fixed plant operator earning $140,000 in base salary plus $30,000 in allowances, half of which the lender discounts. The assessable income drops to $155,000. With existing rent of $450 per week and a car loan costing $800 per month, the borrowing ceiling for an investment property sits around $520,000 before the rental income offset is applied. Adding $480 per week in shaded rent pushes that figure closer to $620,000, which matters when the property you're looking at is priced at the higher end of your range.

Deposit Requirements and the LVR Cap for Investor Loans

Most lenders cap investor lending at 90 per cent LVR, and several of the majors have tightened that to 80 per cent for FIFO borrowers or applicants with existing investment debt. At 90 per cent you'll pay Lenders Mortgage Insurance, which on a $550,000 loan adds roughly $15,000 to $18,000 to your upfront costs. At 80 per cent LVR you avoid LMI but need a larger cash deposit or enough usable equity in your owner-occupied property.

Genuine savings must cover at least 5 per cent of the purchase price if you're borrowing above 80 per cent. That means funds held in your offset, savings account or term deposit for at least three months. A $30,000 work bonus paid four weeks before settlement won't qualify. If you're using equity from your home, the lender will order a valuation and calculate 80 per cent of that figure as the maximum you can borrow against that security, then subtract your existing mortgage balance to find the available equity. That figure then forms your deposit for the investment purchase.

Rental Income and How It Affects Your Borrowing Power

Projected rental income can increase your borrowing capacity, but only after the lender applies a 20 per cent discount to account for vacancy and costs the property won't generate income to cover. If you're buying in a location with a known high vacancy rate or a property type that's oversupplied, some lenders apply a larger shading or cap the rent at a figure below what the market appraisal suggests.

The rental assessment comes from either a letter from a licensed property manager or a desktop appraisal the lender orders. A two-bedroom unit returning $520 per week will be shaded to $416 for serviceability purposes. That adds roughly $21,600 per year to your assessable income, which can lift your maximum loan amount by $80,000 to $100,000 depending on your other commitments and the interest rate applied.

In our experience, applicants overestimate how much rental income will help when they're already close to their servicing limit. The shading reduces the benefit, and if your existing debt sits above a debt-to-income ratio of 5.5 to 6 times your gross income, you may hit the lender's internal cap before rental income can make a material difference. Lenders now apply a 20 per cent cap to new investor loans at or above a DTI of 6, which means fewer than one in five approvals can sit in that range.

Interest-Only Repayments and Why Lenders Still Assess Principal and Interest

An interest-only period reduces your monthly repayment and can improve cash flow, particularly if you're holding the property for capital growth rather than paying down the loan. Most lenders offer interest-only terms of one to five years on investment loans for FIFO workers, after which the loan reverts to principal and interest.

Serviceability is still calculated on a principal and interest basis at the buffer rate, regardless of whether you elect interest-only. A $500,000 loan at 6.5 per cent assessed at 9.5 per cent on a 30-year term requires you to service roughly $4,400 per month in the lender's calculations, even though your actual interest-only repayment might be $2,700. That gap is where applications fail when the borrower assumes the lower repayment will be used in the assessment.

If you're planning to use an interest-only structure to expand your property portfolio, the serviceability test limits how many properties you can hold at once unless your income increases or your other debts reduce. Each additional property is assessed on the same principal and interest buffer, so the cumulative servicing load climbs quickly.

What's Changed with Negative Gearing from 1 July 2027

Properties purchased after 7:30pm AEST on 12 May 2026 that aren't eligible new builds will have rental losses quarantined from 1 July 2027. That means you can't offset the loss against your FIFO salary. Losses can only be carried forward to offset future rental income or capital gains on residential property.

Eligible new builds, defined as dwellings built on previously vacant land or developments that increase dwelling numbers, retain full negative gearing. A knock-down rebuild that replaces one house with one house doesn't qualify. A new unit in a complex that adds to the dwelling count does. If you bought a property between 12 May 2026 and 30 June 2027, you have until 30 June 2027 to claim losses against your wage income, after which the quarantine applies unless it's an eligible new build.

Lenders don't factor future tax deductions into serviceability, so the negative gearing change doesn't alter how much you can borrow. It does alter the after-tax cost of holding the property, which affects whether the investment makes sense once you model the cash flow over five to ten years.

Fixed or Variable Rate for an Investment Property Loan

Variable rates give you offset account access and the ability to make extra repayments without penalty, which matters if you want to park cash in the offset to reduce interest while keeping funds available. Fixed rates lock your repayment for one to five years but usually don't allow an offset and charge break fees if you repay early or refinance before the fixed term ends.

Investor variable rates currently sit above owner-occupier rates by 20 to 60 basis points depending on the lender. Fixed investor rates are priced similarly. If you're holding the property long-term and want certainty over repayments during the first few years, a partial fix on 50 to 70 per cent of the loan lets you lock part of the rate while keeping offset access on the variable portion. That structure works when you have offset funds but still want protection against rate rises on the majority of the debt.

Refinancing an existing investment loan to access a lower rate or better loan features is common once you've held the property for 12 to 24 months and the value has moved. You can read more on investment loan refinancing for FIFO workers if you're reviewing your current rate and want to know what's available.

The Debt-to-Income Cap and How It Limits Investor Borrowing

From 1 February 2026, lenders can only approve up to 20 per cent of new investor loans at a debt-to-income ratio of 6 times gross income or higher. If your total borrowings including the new investment loan exceed six times your assessable income, your application sits in that 20 per cent pool, and approval depends on whether the lender has capacity left in that quarter.

For a FIFO fixed plant operator with an assessable income of $155,000, a DTI of 6 equals total debt of $930,000. If you already have a $450,000 home loan and you're applying for a $500,000 investment loan, your total debt is $950,000 and your DTI is 6.1. That application competes for a slot in the capped pool. If the lender has already allocated its 20 per cent for that quarter to other high-DTI applicants, your application will be declined or delayed until the next reporting period.

The cap is applied separately to investor and owner-occupier portfolios, so the 20 per cent limit for investor loans doesn't draw from the same pool as owner-occupier high-DTI approvals. Construction finance for new builds and bridging finance for owner-occupiers are exempt from the cap, but standard investment purchases are not.

If you're looking to hold multiple investment properties or you're planning to buy while still carrying a car loan or other personal debt, getting your DTI below 6 before you apply will keep you out of the capped pool and improve your approval odds. Paying down non-deductible debt or increasing your deposit to borrow less are the two levers that bring the ratio down.

Why Some Investment Loan Applications Get Declined

Income shading, high existing debt, and insufficient genuine savings account for most declines. If your allowances make up more than 30 per cent of your total pay and the lender applies a 20 per cent discount, your assessable income can drop below the threshold needed to service the loan at the buffered rate. If your existing home loan, car loan and credit cards already push your DTI above 5.5, adding an investment loan takes you past 6 and into the capped pool where approval isn't certain.

Insufficient genuine savings is the other common issue. If you're borrowing at 85 or 90 per cent LVR, the lender requires at least 5 per cent of the purchase price to have been held in your account for three months. A cash gift from family or a work bonus paid recently won't meet that test unless it's been sitting in your offset or savings for the required period. Equity from your home can substitute for genuine savings, but only if the valuation comes in at or above the figure you estimated and your existing loan doesn't already sit at 80 per cent or higher against that value.

If you've recently changed employers or moved from permanent to contract FIFO work, some lenders require six to twelve months in the new role before they'll assess your income at full value. That waiting period can delay your purchase unless you find a lender with a more flexible policy on recent job changes within the same industry.

You need your income documentation, rental appraisal, deposit confirmation and credit position sorted before you make an offer. Call one of our team or book an appointment at a time that works for you.

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