Why bill-splitting goes wrong
It's rarely about the money itself. It's about perceived unfairness. One person feels they're paying more, using less, or always being the one to sort things out. The fix is a system, not a conversation.
Step 1: List all shared expenses
Before you start splitting, agree on what's shared:
- Rent — equal split or proportional to room size
- Electricity — usually split equally
- Water — split equally
- Internet — split equally
- Generator fuel — split equally (or by usage if one person WFH)
- Cleaning supplies — split equally
- Waste disposal — split equally
Step 2: Choose your method
Option A: 50/50 everything
Simplest. Works when rooms are similar size and usage is roughly equal.
Option B: Proportional split
If one bedroom is significantly larger or has an en-suite, adjust the rent split (e.g., 55/45) but keep utilities equal.
Option C: Shared account
Both contribute a fixed amount monthly to a shared account. All bills come from there. This is the cleanest method.
Step 3: Use tools, not memory
Don't rely on "I'll remember" or WhatsApp messages. Use the Flatmate app's Nest feature to:
- Track shared expenses in real time
- See who owes what at any point
- Log payments with timestamps
- Set up recurring expense reminders
Step 4: Review monthly
Sit down for 10 minutes each month to review expenses. Are things fair? Do adjustments need to be made? This prevents resentment from building up.
Common scenarios and how to handle them
"My flatmate uses more electricity"
If someone runs AC all day while the other is at work, consider a slight adjustment. But don't nickel-and-dime — it kills the relationship.
"My flatmate's partner is always over"
If a third person is effectively living there (4+ nights/week), they should contribute to utilities. Have this conversation early.
"My flatmate is late on payments"
The shared account method prevents this — both contribute at the start of the month, before bills are due.
The golden rule
Communicate early, communicate often, and keep everything documented. The best flatmate relationships are built on transparency, not trust alone.