Tax & Finance
Estimated Max Price
$466,276
Loan: $366,276 + Deposit: $100,000
Repayment
$2,243/mo
Buffer Rate
9.2%
Based on your income, your estimated property affordability is $466,276. Your estimated loan is less than 4x your income, which is considered very conservative and likely to be easily approved by most lenders. Note that we have applied a 3% serviceability buffer to your interest rate (testing at 9.20%) per APRA guidelines.
Estimates only. Does not include LMI or Stamp Duty.
Income-based mortgage affordability is a measure of the maximum property price you can likely afford based on your current gross salary, existing debt, and saved deposit. Unlike simple 'borrowing power' calculators, affordability looks at the holistic picture of your financial life. In the Australian property market, where prices in cities like Sydney and Melbourne are among the highest in the world, understanding your affordability limit is the first and most crucial step in the home-buying journey. Lenders in Australia use a combination of factors to determine affordability, primarily focusing on your 'uncommitted monthly income.' This is the money left over after tax, Medicare, HECS repayments, living expenses (based on HEM - Household Expenditure Measure benchmarks), and existing debt obligations. For Australians, affordability isn't just about what a bank will lend you, but what you can comfortably repay without falling into 'mortgage stress.' Typically, mortgage stress is defined as spending more than 30% of your gross income on housing costs. This tool helps you find that 'sweet spot' where you can secure a home while maintaining a high quality of life and financial flexibility.
The logic behind this calculator follows the standard serviceability assessment used by major Australian banks. The process starts by calculating your 'Net Income After Debt' (Gross Annual Salary - Tax - Medicare - Annual Debt Repayments). We then apply a serviceability buffer, which is a key requirement from APRA. Lenders must test your ability to repay a loan at a rate usually 3.00% higher than the actual market rate. This ensures that if interest rates rise, your mortgage remains affordable. Our tool uses a conservative Debt Service Ratio (DSR) of 35% of your gross income as the 'affordable' benchmark. The formula for the estimated loan amount is based on the present value of an annuity, where we solve for the principal given your monthly available surplus and the 'buffered' interest rate. The Total Affordability is then: Estimated Loan + Your Deposit. It's important to remember that this calculation provides an estimate of what you *could* afford. Final bank approval will also depend on your credit score, the specific property's valuation, and your detailed spending habits over the most recent 3 to 6 months of bank statements.
Even if market rates are at 6%, Australian banks will assess your application as if the rate is 9%. This 'buffer' is a mandatory risk management tool overseen by APRA. This means your 'borrowing power' might be significantly lower than what a simple interest-only calculation would suggest. Always use a 'buffered' rate when planning your budget to avoid disappointment during the formal application process.
If your deposit is less than 20% of the property value, you will likely need to pay Lenders Mortgage Insurance (LMI). While this allows you to buy sooner, it can add tens of thousands of dollars to your loan balance, effectively reducing your true affordability. Conversely, having a 20% deposit not only avoids LMI but often gives you access to lower interest rates from lenders who view you as a lower-risk borrower.
Banks don't just take your word for what you spend; they use the Household Expenditure Measure (HEM) as a baseline. If your actual spending is very low, the bank may still 'default' to the HEM for your income level and family size. To maximize affordability, focus on reducing recurring 'traceable' expenses like subscriptions and dining out in the six months leading up to your application, as these appear directly on the bank statements the lender will audit.
Don't spend your entire savings on the deposit. In Australia, you need to set aside approximately 4% to 6% of the property price for 'hidden' costs like Stamp Duty (unless you qualify for a first-home exemption), legal fees, building/pest inspections, and moving costs. Subtract these from your total savings *before* calculating your deposit amount in this tool.
A $10,000 credit card limit—even if the balance is $0—can reduce your borrowing power by up to $50,000. Banks view the entire limit as potential debt. Lowering your limits to the absolute minimum required for your daily life is one of the fastest ways to instantly boost your mortgage affordability results.
Once you have used this tool to find your range, seek a formal 'Pre-Approval' from a lender or broker. This provides a written commitment of what the bank will lend you, giving you the confidence to bid at auction and making you a more attractive buyer to real estate agents who want to see 'finance-ready' offers.
James and Chloe earned a combined $150,000 and had saved a $100,000 deposit. They initially hoped for a $900,000 house. However, after using the affordability calculator, they realized that with their $1,200 monthly car loan, their comfortable loan limit was $650,000. Including their deposit, their true affordability was $750,000. They adjusted their search to a different suburb, securing a great home without the risk of future mortgage stress.
Aaliyah, a nurse earning $95,000, had a $60,000 deposit. The tool showed her affordability was around $480,000. Instead of trying to buy a house, she used her 'First Home Guarantee' (allowing a 5% deposit with no LMI) to buy a $450,000 apartment. Because she stayed under her affordability limit, she still has enough surplus income to maintain her car and travel once a year.
Tom had a $120,000 salary but $2,000 in monthly debt repayments from various personal loans. His affordability was capped at $550,000. He spent a year aggressively paying off his debts before applying. Once his monthly debt fell to $0, his calculated affordability jumped to $720,000, allowing him to buy a house with a backyard instead of a small unit.
Everything you need to know about this topic.
Continue your journey with these related resources.