Personal Finance

Working out whether you can afford a mortgage, how fast you can pay off a loan, or what your investments might be worth in twenty years shouldn't require downloading an app or handing over your financial details. These calculators run the numbers right in your browser — amortization schedules, compound interest projections, freelance tax estimates, and more. Every formula is based on standard financial models, and the results are shown alongside the maths so you can check the working yourself. Nothing you enter leaves your device.

If you're comparing home loan options, start with the Mortgage Amortization Calculator — it generates a full payment schedule showing how much goes to principal versus interest each month, which is the clearest way to see the true cost of a loan. For longer-term planning, the Compound Interest & Wealth Growth Visualizer lets you project savings over 10, 20, or 30 years with different contribution frequencies, while the Early Retirement Visualizer adds withdrawal rate modelling so you can see when your portfolio can sustain your living expenses.

Freelancers and contractors will find the Invoice, Tax & Net Pay Calculator useful for quoting projects — it estimates quarterly tax obligations based on your income bracket and expenses, so you know your actual take-home before committing to a rate. The Car Loan Amortization & Lease Calculator handles both traditional loans and novated leases, comparing total cost of ownership across different term lengths and deposit amounts.

For home improvement decisions, the Renovation Cost Range Estimator breaks down typical Australian renovation costs by room type and scope, while the Solar Panel ROI & Savings Calculator factors in your location, electricity rates, and panel degradation to estimate payback period. Strata owners can use the Sinking Fund & Asset Life Estimator to project whether their building's capital works fund is adequately reserved.