Australia Mortgage & Borrowing Power Calculator
Calculate your maximum home loan borrowing capacity under APRA's mandatory 3.0% interest rate serviceability buffer. Test monthly or fortnightly mortgage repayments, and see how much interest an offset account saves you.
Income & Financial Commitments
Borrowing Capacity & Repayments
How Australian Lenders Assess Your Borrowing Power
Australian home loan approvals rely on Net Servicing Surplus calculated using the APRA formula:
1. APRA 3% Assessment Buffer
Even if your variable rate is 6.15%, banks stress test your finances at 9.15%. A 1% cut in rates or buffer typically boosts borrowing power by ~$45,000.
2. Credit Card Limit Penalty
Every $10,000 credit card limit reduces your borrowing power by up to $45,000, even if you never use the card. Closing unused cards before applying instantly raises borrowing capacity.
3. Fortnightly vs Monthly Repayments
Paying fortnightly pays half the monthly payment every 2 weeks. Over 1 year, you make 26 fortnightly payments (equal to 13 full months), paying down your mortgage years earlier.
📊 Australian Statutory Payroll & Tax Breakdown Matrix
| Statutory Component / Legal Deduction Item | Calculated Amount (AUD) |
|---|---|
| Primary Net / Statutory Payable Amount | $0.00 |
Engr. Muhammad Shahzad
Principal Financial Systems Architect & Australian Taxation Office (ATO) & Fair Work Specialist
Lead software and systems architect specializing in high-performance browser computing, algorithmic validation, financial models, and zero-telemetry client-side privacy architecture.