This isn’t your lease — it’s the agreement between roommates about how you’ll handle money day to day, and especially the deposit. Leases cover you and the landlord; they rarely cover "I paid more of the deposit, so I should get more back."
What to put in writing
- The split — each person’s share of rent and bills.
- The deposit — who contributed how much.
- Bills — which are shared, and who’s responsible for paying each provider.
- Moving out — notice period, and how the deposit is divided when someone leaves (especially if their share doesn’t match their contribution).
The deposit is the classic flashpoint. Recording exactly who put in what — and how it’s returned — prevents the move-out month from turning sour.
Agree it together
Describe the arrangement, everyone reviews and e-signs, each keep a copy.