How to Split Bills With Roommates

How to split bills with roommates: start with an agreement

Knowing how to split bills with roommates starts before the first bill arrives. Sit down together, list every shared cost and agree how each one will be divided. A method everyone accepts on day one is worth more than a perfectly fair formula nobody signed up for.

Put the agreement in writing, even as a shared note. Include who pays each bill, how others pay them back, when you settle up and what happens when someone moves out. If you are setting up your first shared place, our first apartment budget guide covers the costs to expect.

What is the fairest way to split rent?

The fairest way to split rent is usually by bedroom size, with small adjustments for extras such as a private bathroom or parking. Shared spaces like the kitchen and living room are used equally, so only the private space is weighted. Everyone can see the maths, which makes it easy to agree on.

Worked example: splitting $2,700 rent three ways

Three roommates share a $2,700 apartment. Their bedrooms measure 150, 120 and 100 square feet, for 370 in total. A simple method is to split half the rent equally for shared space and half by bedroom size. Half the rent, $1,350, divided equally gives $450 each. The other $1,350 is divided by room share: about $547, $438 and $365. Final rent is about $997, $888 and $815.

Adding a feature adjustment

If the 150-square-foot room also has a private bathroom, the roommates might agree to add $75 to that share and take $37.50 off each of the other two. The exact amount is a judgment call. What matters is that everyone agrees before signing the lease.

Who should pay the bills, and how do roommates settle up?

Name one person as the account holder for each bill and have the others pay their share by a set date each month. Spreading the bills across roommates shares the responsibility and the credit risk. Settle by e-Transfer on the same day every month so nobody has to chase.

1. List every shared bill with its amount, due date and account holder.
2. Agree each person's share using the methods above.
3. Set one settle-up date a few days before rent is due.
4. Keep receipts for variable bills like hydro so everyone can check the amount.
5. Review the split every six months or when someone moves in or out.

What happens when a roommate moves out or stops paying?

Agree on the process in advance. Most shared agreements ask for a set notice period, such as 30 or 60 days, and for the leaving person to help find a replacement or cover their share until one is found. If everyone signed the lease, the landlord can usually expect the full rent regardless of who has left.

If a roommate stops paying, raise it early and in writing. Tenancy rules are set by each province, so check your province's residential tenancy office before taking further steps. Knowing how much rent you could carry alone is useful; the rent affordability calculator shows it quickly.