Splitting rent between roommates
Living with roommates means splitting rent, utilities, internet, and shared supplies every month. Managing shared housing expenses clearly avoids the monthly ritual of mental math and bickering. Here's a tidy way to split rent, with a free calculator.

Splitting rent by room or by person
Rent is usually the biggest expense. If everyone's rooms are similar, split it evenly per person. If someone has a larger room or a room to themselves, split by room size or by an agreement made upfront, to avoid arguments partway through.
Utilities and internet
Electricity and water vary month to month based on usage. The fairest approach is to log the exact amount from the bill and split it evenly among however many people lived there that month. Internet is usually fixed, so splitting it evenly is easy. Logging each bill keeps the numbers transparent for everyone instead of guesswork.
Shared supplies and recurring expenses
Dish soap, toilet paper, gas, seasonings, water jugs — things everyone uses but that one person usually ends up buying. Log every shared purchase so that person gets reimbursed their fair share at the end of the month. Recurring monthly items (rent, internet, parking fees) are worth setting up once so they're quick to log every time.
An expense history for reconciliation
Good shared-housing expense management means the whole apartment can look back and see who paid last month and who still owes. Keeping an expense history resolves questions quickly and gives a clear record whenever someone moves out or a new roommate moves in.
Frequently asked questions
- Rent is fixed but utilities vary — how do I log that?
- Log them as separate expenses each month: rent, electricity, water, internet. Set whoever fronted the payment as the payer — each person's balance updates automatically.
- How do we split costs when someone moves in mid-month?
- Add them to the split list for whichever expenses they actually used. Chitipay splits per expense, so there's no need for a single formula covering the whole month.
- How do we reconcile at the end of the month?
- Open the balances view: each person gets a single number — negative means they owe, positive means they're owed. You can export to PDF/Excel for the whole apartment to see.
Calculate this month's shared housing costs
List your roommates and each expense for the month, and the tool splits it evenly and shows how much everyone still owes. The Chitipay app also keeps a history across months for you to reference later.