% of income - Source frequency: monthly · Methodology · Corrections
Monthly mortgage repayment (at 80% LVR, 30-year term, standard variable rate) as a percentage of gross monthly income.
Loan principal = 80% of median dwelling price. Term = 30 years (360 payments). Rate = prevailing standard variable rate (SVR). Income = average weekly earnings × 4.333. Uses standard amortization formula: M = P × [r(1+r)^n / ((1+r)^n − 1)].
Source frequency: Mixed (monthly output from inputs at various frequencies, carried forward to monthly display)
Modelled percentage of average gross income required to service a typical new mortgage. Assumes 80% LVR on a median-priced dwelling at the prevailing standard variable rate over a 30-year term.
Shows how much of a typical income goes to mortgage repayments for a new buyer. Higher values indicate reduced housing affordability.
Lower is better
Source: Derived: RBA E1 (dwelling price) + RBA F5 (SVR) + ABS AWE (earnings)
GREEN = favourable trend within acceptable band of baseline. AMBER = flat or mild change. RED = unfavourable trend beyond threshold.
