Memorandum of Understanding for Flatmates

While an MoU is primarily a social contract designed to align expectations, it can become legally binding if it contains clear financial commitments and is signed by all parties. For strict legal enforcement, monetary agreements should be tied directly to the primary lease or a formal co-tenancy agreement. However, courts and small claims tribunals frequently use signed MoUs as evidence of intent if a dispute over shared expenses arises.

The best approach is to establish a shared digital kitty or use an expense-splitting app where all communal purchases are logged and split equally at the end of each month. Alternatively, you can designate one flatmate to buy supplies on a rotating monthly schedule to keep the burden even. Whichever method you choose should be explicitly outlined in your MoU to prevent resentment over small daily expenses.

You should first initiate a formal household meeting to reference the signed MoU and address the specific boundary that was crossed. If the behavior continues, look to the dispute resolution clause in your document, which may involve mediation or a structured timeline for them to find a replacement tenant. As a last resort, persistent violations of financial agreements can be escalated to a small claims court using the MoU as documentation.

Landlords do not need to sign your flatmate MoU, as it is a private agreement regulating internal household dynamics rather than the tenancy itself. However, you must ensure that nothing in your MoU contradicts the primary lease agreement you signed with the landlord. Keeping your landlord informed about who is living in the property is always a best practice to avoid violating your lease terms.