Roommate Rent Split Calculator
Equal · Income-based · Room size-based
Income ($) or room sqft
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Roommate 1
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Roommate 2
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Total Rent
About This Calculator
The Rent Split Calculator helps roommates divide rent fairly using three methods: equal split, income-based proportional split, or room size-based split.
Equal split is simplest and works well when rooms are similar and incomes are comparable. Income-based split is fairer when roommates earn very different salaries — higher earners pay more. Room size split makes sense when rooms vary significantly in size or features.
Pro tip: Always put your rent split agreement in writing, even between friends. Document the method, amounts, and due dates to avoid future disputes.
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Frequently Asked Questions
What's the fairest way to split rent?▼
It depends on your situation. Equal split is simplest. Income-based is fairer when earnings differ significantly (a common rule: split proportionally to income above a shared baseline). Room-size split works when rooms are very different. Many roommates combine methods.
How do I split utilities fairly?▼
Most fair approach: split utilities equally, or proportionally if usage differs significantly. Assign one person per utility for simplicity. Apps like Splitwise make ongoing expense tracking easy.
Can roommates negotiate rent amounts?▼
Absolutely. There's no rule that says roommates must pay equal rent. What matters is that the total equals the landlord's required amount and all parties agree. Document any arrangement in a roommate agreement.
What happens if a roommate can't pay their share?▼
If one roommate can't pay, the lease holder is still responsible to the landlord. This is why it's important to screen potential roommates carefully and consider individual lease agreements when possible.
Should I get a roommate agreement?▼
Yes. A roommate agreement (separate from the lease) covers rent split, utilities, chores, guest policies, and what happens if someone wants to leave early. It's not legally binding in all jurisdictions but helps resolve disputes.
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