Why Income & Employment Matter for Home Loans

Your income and employment structure determine how much you can borrow and which lenders will approve your application.

How Lenders Calculate Serviceability

Lenders assess your income against your expenses to determine how much you can comfortably repay each month. Most use a minimum serviceability buffer of 3%, meaning they test whether you could still afford repayments if rates increased by that amount. Your net income after tax, existing debts, living expenses, and the proposed loan repayment all feed into this calculation.

Consider a buyer in Altona earning $95,000 annually with a $15,000 car loan and typical living costs. The lender calculates disposable income after deducting PAYG tax, the car loan repayment, declared expenses, and an inflated test rate on the proposed mortgage. If the remaining buffer is too narrow, the loan amount reduces or the application is declined. This is why two people with identical incomes can receive different borrowing capacities based on their expense profiles and debt commitments.

Lenders also apply a debt-to-income ratio cap, often around six times your gross annual income, though some allow higher multiples depending on your deposit size and employment stability. If you are applying with lower declared expenses to lift serviceability, expect the lender to benchmark your living costs against the Household Expenditure Measure (HEM) and apply whichever figure is higher.

What Counts as Verified Income

Permanent full-time and part-time employment income is the most straightforward to verify. Lenders typically require two recent payslips and either a letter of employment or access to your ATO income statement. Base salary is always counted at 100%, while overtime, bonuses, and commissions are assessed differently depending on consistency and length of history.

If you have been receiving overtime for at least three months, some lenders will accept 80% of the average. For commission or bonus income, most require a minimum 12-month history and will average the past two years, applying a discount of 20% to 50% depending on variability. Self-employed borrowers need to provide tax returns, often for the past two years, and lenders assess the net profit after deductions and any add-backs for non-cash expenses like depreciation.

Casual and contract workers face stricter criteria. Casual income usually requires a 12-month history with the same employer, and lenders will average earnings over that period. Contract workers on Australian Business Numbers (ABNs) are often treated as self-employed, requiring financials and tax returns even if the work is ongoing. This creates complications for Altona residents working in industries like logistics or healthcare, where contract roles are common but income documentation can be inconsistent.

Probation Periods and New Employment

Most lenders require you to have completed probation before they will approve a home loan application. Probation periods typically run for three to six months, and until that period concludes, your employment is considered conditional. A handful of lenders will assess applications during probation if you provide an unconditional offer letter and have a strong employment history in the same field, but this limits your access to competitive rates.

Changing jobs just before or during a home loan application introduces delay. If you are switching roles within the same industry and your new salary is equal to or higher than your previous income, most lenders will proceed once probation is complete. If the change involves a pay cut, a new industry, or a move from permanent to casual or contract work, expect additional scrutiny and a potential reduction in your borrowing capacity.

For buyers near Pier Street or Altona Beach who work in the CBD and are considering a career move, timing the employment change around settlement rather than during the application can avoid complications. Lenders reassess employment status before final approval, so a job change between pre-approval and settlement can still affect the outcome.

Self-Employed and ABN Income

Self-employed applicants are assessed on net business income after deductions, which is often significantly lower than gross revenue. If your tax returns show $120,000 in turnover but $65,000 in net profit after claiming vehicle costs, home office deductions, and depreciation, lenders base serviceability on the $65,000 figure. Some lenders allow add-backs for non-cash deductions, which can lift your assessed income, but this varies between lenders and requires detailed financials.

You will need to provide two years of tax returns, notices of assessment, and often a letter from your accountant confirming ongoing business activity. If your business is structured through a company or trust, lenders may also request business financial statements and ABN registration details. This makes the documentation process longer and more involved than for PAYG employees, so beginning the home loan application process earlier is recommended.

In our experience, self-employed buyers in Altona often underestimate how much their deductions reduce borrowing capacity. If you have been claiming maximum deductions to minimise tax, consider whether lodging a higher taxable income for one or two years before applying would improve your loan amount. The trade-off between lower tax and higher borrowing capacity is worth calculating with your accountant before you start house hunting.

Rental Income and Investment Properties

If you already own an investment property, lenders will assess the rental income when calculating serviceability. Most apply a shading factor, accepting only 70% to 80% of the gross rent to account for vacancy periods, maintenance, and management costs. If the property is negatively geared, the loss reduces your borrowing capacity for the next purchase.

For buyers in Altona looking to retain their current property and purchase a new owner occupied home loan, the rental income from the existing property can help offset its holding costs, but do not expect full credit. If your current home generates $450 per week in rent, the lender may only factor in $315 to $360 per week, while the full mortgage repayment, rates, insurance, and strata costs remain on the liability side of the calculation.

Centrelink and Other Government Payments

Most lenders will not accept Centrelink payments as primary income for a home loan, though some specialist lenders do assess Family Tax Benefit, Parental Leave Pay, and disability support payments on a case-by-case basis. If Centrelink income forms part of your household budget but you also have employment income, the government payment is usually excluded from serviceability calculations.

For applicants receiving child support, lenders typically require evidence that payments have been received consistently for at least three months and will continue for a minimum of two years. Child support income is often shaded at 80%, and some lenders will not accept it at all unless it is paid through the Child Support Agency with a formal agreement in place.

Why Employment Type Affects Rate Discounts

Some lenders reserve their lowest advertised rates for borrowers in stable, permanent employment with strong serviceability. If you are self-employed, on a contract, or in casual work, you may still be approved but offered a slightly higher rate or required to provide a larger deposit to access the same pricing. This is not universal, but it is common enough that comparing home loan rates across multiple lenders becomes more important for non-standard employment types.

For Altona buyers working locally in manufacturing, retail, or hospitality, where casual and part-time roles are more prevalent, this can mean the difference between a 6.2% variable rate and a 6.5% variable rate on the same loan amount. Over the life of a mortgage, that difference compounds.

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