How to split rent with roommates fairly
Four proven methods, the arithmetic behind each, and how to agree on one without anybody feeling short-changed.
Splitting rent, bills, trips and everything else that gets divided between people who like each other and would like to keep it that way.
Four proven methods, the arithmetic behind each, and how to agree on one without anybody feeling short-changed.

Two people, one bedroom, and four people using one kitchen. Neither "per room" nor "per person" survives that on its own.

Not a legal document. A one-page record of the eleven decisions every shared house makes anyway, usually by accident.

Ten people owing ten people collapses into four payments. Here is the arithmetic, and the one case where you should switch it off.

Agree what everyone is contributing before agreeing what anything costs. Every other order produces a difficult conversation in month four.

Parental leave, study, caregiving or a redundancy. Percentages stop working the moment one of them is zero.

Pick one group currency, convert at the rate on the day you paid, and never reopen it.

Publish the per-person number before anyone books anything. Every other problem with these trips descends from skipping that step.

The decision that matters is made before the transfer, not after. Five things, in one message.

The organiser almost always ends up subsidising the collection. Two decisions, made in the first message, prevent it.

Landlord, household, or the person who broke it — and the reason most houses get the middle one wrong.

Six decisions to make before the first rent payment, in the order that keeps them from turning into arguments.

One person’s card, five people’s logins, and a monthly total nobody has looked at since the year it started.

The fuel maths takes thirty seconds. The part groups get wrong is what the car itself is worth.

Pro-rate by day, decide who carries the vacant nights, and recalculate everyone’s share from the day the replacement arrives.

One shared pot for the things everyone uses, personal food off the ledger, and a settle-up that takes two transfers.

Seven things to check before you move a household’s money history into a new app.

The order to do things in, what to put in writing, and when it stops being a conversation.

Three ways couples hold money, what each one actually solves, and how each one fails.

Different bedrooms, different night counts, one invoice — and a formula that holds up.

Equal, by item, or somewhere in between — and where the tax and tip actually belong.

Both apps track shared expenses and simplify who owes who. The difference shows up in what a household pays for, and in how many expenses the free plan lets you log.

Internet, power, water and the bills nobody remembers until they arrive.

A square-footage formula that survives the group chat.

Track it as you go so the settle-up takes five minutes, not five days.

When income-weighted splitting is fairer — and when it backfires.

Scripts that keep the money conversation from costing you the friendship.

Document the split on day one so move-out is arithmetic, not argument.
Free to start, with unlimited expenses and unlimited members. Add your household, pick a split, and let Expenso keep the running balance.
Create a free groupFree to start, with unlimited expenses and unlimited members. Works on iPhone, Android and the web.