When you submit a home loan application to an Australian lender, a credit analyst or automated assessment system reviews your application against the lender's credit policy. This assessment is structured but not arbitrary — every lender follows ASIC's responsible lending requirements and APRA's serviceability standards. Understanding what lenders look for gives you the ability to prepare a strong application from the outset.
How Lenders Assess Income and Serviceability
Lenders first verify and quantify your income. For PAYG employees, this is relatively straightforward — payslips and payment summaries confirm gross income, which is then applied to the serviceability calculator at the APRA buffer rate (loan rate + 3%). For self-employed applicants, income is assessed using tax returns, and many lenders average the last two years; if the more recent year is lower, some lenders use only that figure.
Once income is established, the lender calculates your net surplus — income minus all outgoings (living expenses, existing debt repayments, and the new proposed loan repayment at the buffer rate). The surplus must be positive for the application to pass serviceability. Most lenders require a surplus buffer — not just a break-even calculation — to account for unforeseen expenses.
Different Lenders, Different Results
Every lender has a different serviceability calculator. Factors such as how rental income is shaded, how overtime is treated, which HEM table is used, and how living expenses are modelled all vary. A borrower who fails serviceability at one lender may easily pass at another. This is one of the most important reasons to use a mortgage broker rather than applying directly to a single bank.
How Living Expenses Are Assessed Using the HEM
After the Royal Commission into Misconduct in Banking (2019), ASIC tightened responsible lending requirements around expense assessment. Lenders can no longer rely solely on the Household Expenditure Measure (HEM) — they must also review three to six months of bank statements to understand actual spending patterns. If your declared expenses are significantly lower than what bank statements show, the lender will use the higher figure.
Lenders examine bank statements for: discretionary spending (dining, entertainment, travel, subscriptions); regular commitments (insurances, memberships, school fees); and any unexplained large cash withdrawals. Gambling transactions — regardless of net outcome — are viewed negatively by most lenders and can affect the application's credit score internally.
Gambling Transactions in Bank Statements
Regular gambling transactions in your bank statements — even if you are net profitable — are a significant red flag for most Australian lenders. Many lenders have explicit credit policies that result in automatic declines or manual review escalations when gambling activity is identified. If you gamble regularly, review your statements before applying and seek broker advice on lender selection.
Credit History and Character Assessment
Every home loan application triggers a credit file inquiry. Lenders access your credit report from Equifax, Experian or Illion (or sometimes all three), reviewing your credit score, credit enquiry history, repayment history, defaults, judgments, and bankruptcy history. The credit score provides a snapshot; the lender's credit analyst reviews the detail behind the score.
A single default or missed payment can materially affect your application — particularly if it occurred in the last two years and remains on your file. Credit enquiries from multiple lenders in a short period (called 'shopping') also reduce your score. Defaults stay on your credit file for five years in Australia; serious credit infringements (fraud, habitual default) for seven years. Your credit history, combined with income, expense and character factors, forms the complete picture the lender uses to make its decision.
Frequently Asked Questions
About the Author
Sakib Manzoor
Senior Finance Wellness Expert
Sakib Manzoor is the founder of Secure Finance and brings extensive experience in Australian mortgage broking and financial wellness. Specialising in helping clients achieve their property finance goals through personalised strategies and expert guidance, Sakib is FBAA accredited and committed to providing clear, actionable advice. All content is written to meet Australian regulatory standards and is regularly updated to reflect current market conditions.