The share house, split fairly.
Three-hundred-and-sixty-two thousand Australian households are share houses — separate lives, separate pay packets, one lease and a very active group chat about the power bill. It’s usually a stage, not a destination, which makes the money questions here about fairness now and timing later.

A share house isn’t a family with a shared budget; it’s separate finances under one lease. So the useful frame is two money questions at opposite ends of the stay: split the rent fairly now, and know when it’s worth breaking off to buy.
The earning picture
A share house has three (or four) separate incomes that never merge — so “household income” here means almost nothing. We’ll show personal income instead, and say why: the rent is split, the bills are split, and each person’s money is their own.
The defining feature is un-pooled money under a shared roof. That’s why the friction points are all about splitting — rent by room size, bills by usage, the bond three ways — and why the biggest financial decision is when to leave.
Share-house living is usually the cheapest way to rent per person, because fixed costs are shared — which makes it a good base to save from. The question is whether saving here beats buying now, and when marriage or a deposit tips the balance toward moving on.
Where the money goes
The advantage is real: rent, power, internet and the couch are all divided, so per-person fixed costs are lower than any other household type — read the shares per person, not per house.
That’s the saving edge; the spending question is how much of it actually reaches the deposit account versus the group takeaway order. The tools below cover the two decisions that matter — splitting fairly, and timing the move — and the rest of a share-house budget mostly looks after itself.
Splitting the rent — and when to stop
Two money questions define the share house, and they sit at opposite ends of the stay. At the start: split it fairly — by room, by usage, not lazily down the middle.
Near the end: work out when the saving edge of cheap shared rent stops beating the case for buying your own place. The tools below cover both; the rest mostly looks after itself.