BorrowPower is built for quick, transparent home-loan maths in Australia.
We help you sanity-check borrowing power and repayments—without forms, phone calls, or sales pressure. Use the tools to understand your numbers before talking to a lender or broker.
Who’s behind this
Hi, I’m Alexander (engineer & spreadsheet tragic). I built BorrowPower to make the early steps of home-loan maths quick and transparent. This site is independent; we don’t recommend specific lenders or products.
What BorrowPower does
- Borrowing Power: a first-pass estimate based on income, dependants and typical living-cost buffers.
- Repayment Estimator: Principal & Interest and Interest-Only scenarios with weekly/fortnightly/monthly options.
- Up-front costs: Stamp duty by state and an indicative LMI estimate to help budget total costs.
These are estimates for learning and planning. They’re not personal financial advice.
How the calculators work
- Interest rate: default shown on each tool; you can change it.
- Buffering: borrowing power includes a prudent rate buffer to mimic lender stress-testing.
- Tax: uses 2025–26 Australian tax settings to convert gross → net where relevant.
- Living costs: dependants + a baseline living-cost table (not a lender’s HEM) for a realistic range.
- Repayments: standard amortisation for P&I; IO shows interest-only during IO, then P&I for the remaining term.
- LMI: indicative only—actual LMI varies by lender, product, LVR and profile.
For full assumptions, see the FAQ and Important Information.
What’s not included (yet)
- Credit history, lender-specific policies, fees or special rates.
- Detailed HEM test, bonus-income haircuts, or multi-debt scenarios.
- Personal advice—BorrowPower is a calculator, not a credit provider or broker.
How we make money
Right now: Google AdSense. Later: selected affiliate partnerships for tools or guides we genuinely recommend. If/when we use affiliate links, we’ll label them clearly so you know.
Privacy & data handling
- No sign-in required.
- If you switch on “Remember my inputs,” values are stored locally on your device (localStorage). They never leave your browser.
- We don’t sell your personal data.
See our Privacy Policy for details.
Roadmap
- Extra-repayment impact: time & interest saved.
- Offset & redraw modelling.
- Detailed expense categories and multi-income households.
- CSV/PDF export of scenario runs.
- Accessibility & performance improvements.
Have an idea? We’d love to hear it.