Money✓ Follow-up at 4 weeks1,540 views
How to split bills fairly with roommates when incomes are different
A fair bill-splitting system for roommates with different incomes using proportional calculations, shared expense apps, and a roommate agreement.
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Follow-Up Result
4 weeks laterImplemented proportional split and Splitwise tracking — zero arguments in a month
The Problem
I live with two roommates. One makes $80K, I make $55K, and the third makes $35K. We've been splitting everything equally but the lowest earner is struggling and resentment is building. We also argue about groceries — one person eats way more than the others. The electric bill is high because one roommate blasts the AC. Nobody wants to have the awkward money conversation but it's affecting the friendship.
The Plan
Week 1: Have the Money Meeting
Schedule a house meeting specifically about finances — don't ambush anyone
Everyone shares their monthly take-home pay (or a range if they're uncomfortable with exact numbers)
Calculate proportional percentages: if combined income is $170K, shares are 47%, 32%, and 21%
Apply those percentages to rent and shared utilities — this is mathematically fair
Agree that personal expenses (groceries, streaming accounts) are separate
Week 2: Set Up the System
Download Splitwise — it tracks shared expenses and calculates who owes what automatically
Create a shared spreadsheet for fixed monthly costs so everyone can see the breakdown
Set up a shared bank account or Venmo group for household expenses
Agree on a monthly "house budget" for shared items (toilet paper, cleaning supplies, etc.)
Put it all in writing — a simple roommate agreement prevents future arguments
Week 3-4: Fine-Tune and Maintain
Review the system after one month — is it working? Does anything need adjusting?
Address the AC issue directly: either split the electric bill based on usage or agree on a thermostat range
For groceries, keep them separate — each person buys their own food, shared items go on Splitwise
Do a monthly 5-minute check-in to settle up and address any issues before they fester
Remember: fair doesn't always mean equal, and that's okay
Resources
Splitwise app — the gold standard for shared expense tracking
r/roommates — advice from people navigating the same dynamics
Roommate agreement templates — Google "roommate agreement template" for free options
Follow-Up Result
4 weeks in: the proportional split changed everything. The lowest earner is no longer stressed and actually said "I feel like I can breathe." Splitwise eliminated all the "who bought what" arguments. We set the thermostat to 72°F as a compromise and the electric bill dropped $40. Separate groceries solved the food issue immediately. The monthly check-in takes 10 minutes and keeps everything transparent. Should have done this from day one.Know someone with this problem?
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