Living with roommates is cheaper, right up until someone forgets who paid for what. The fix is not a group chat full of running totals. It is a shared system everyone can see.
This is the exact system I recommend for roommates. It takes about ten minutes to set up and then mostly runs itself.
1. Agree how you will split the rent
Equal splits are simplest. They are not always fair, because a bigger room or a private bathroom is worth more.
Agree the split once and write it down. Equal, by room size, or a fixed amount each. Then nobody re-litigates it every month. If you want the maths done for you, the bill split calculator handles it in seconds.
2. Put recurring bills on autopilot
Rent, internet and utilities repeat every month. Logging them by hand is where most systems fall apart.
Set them as recurring expenses instead, so they split automatically on a schedule. You pick monthly, quarterly or yearly, and the app does the rest.
3. Log the everyday stuff instantly
Scanning is the trick that keeps this painless. The AI receipt scanner reads the total for you, so logging a shop takes one photo instead of two minutes of typing.
Which split method fits which cost
Not every cost should be split the same way. Here is a quick guide.
| Cost | Best split method | Why |
|---|---|---|
| Rent | Shares or fixed amount | Rooms are rarely equal |
| Utilities | Equal | Everyone uses them |
| Groceries | Equal or itemized | Depends who eats what |
| A shared appliance | Equal | Everyone benefits |
| One person's guest | Exact amount | Only they owe it |
4. Settle up on a schedule
Pick one day a month, say the 1st, and settle up. Do not let balances drift for a quarter.
One tap shows the fewest payments needed to get everyone back to zero. If the idea of simplified debts is new to you, it just means the app nets everything out so you send two payments instead of six.
The easiest way to run all of this
You can do this with a spreadsheet. It just will not scan a receipt, handle a subscription, or send a reminder.
EconoGlance was built for exactly this. See the full roommate expense guide, or read how we compare with Splitwise. It is free to start on iOS and Android.
