Three calculators: what you could borrow, what switching might save, and what repayments would look like. All are estimates rather than offers - a real answer depends on your lender and your circumstances.
Indicative only. Assessed at 9.15% p.a.: the average rate on new owner-occupier loans (6.15%, RBA, August 2026) plus the 3% buffer lenders apply. Assumes one income, standard living expenses, $45,000 in purchase costs and a 30-year principal-and-interest loan. Lenders assess income and expenses very differently, so treat this as a starting point rather than an answer.
Interest difference only. Switching costs, break fees and cashback offers are not included. Those are established as part of a full review.
Principal and interest, repaid monthly. Excludes fees, offset benefits and any rate changes over the life of the loan.
Online calculators are useful for establishing scale and unreliable for precision. Three things they cannot account for.
Two lenders assessing identical paperwork can reach materially different figures, because they treat overtime, bonuses, HECS, casual income and credit card limits differently.
Lenders compare your declared living costs against published benchmarks and against your actual statements. What you spend matters as much as what you earn.
The sharpest advertised rate is of no use if that lender's policy will not accept your income type. Policy fit comes first, rate second.
Fifteen minutes gives you a figure you can rely on.