Free money calculators for Australian couples
Quick answers to the money questions couples actually argue about. No sign-up, nothing saved — the numbers stay in your browser.
Fair split calculator
Split shared bills 50/50 or by income — and see what each of you has left.
Open calculator →HECS-HELP repayment calculator
What the ATO takes from your pay under the new marginal system — for one or both of you.
Open calculator →Mortgage offset and redraw calculator
How much interest, and how many years, money in an offset or redraw could save.
Open calculator →
The calculators are a snapshot. Duet keeps it current.
Duet connects both of your banks (read-only, through Australia's Consumer Data Right) and keeps your split, your mortgage and your goals up to date as life changes — with each of you choosing what the other can see.