Fair Rent Split Calculator
A fair rent split separates the value of private bedrooms from the shared home. Compare equal, income-based, and hybrid room-size methods, then use the result as a transparent starting point for agreement.
Calculate a fair monthly rent split
How the room-size method works
Choose how much rent represents common space. That portion is divided equally. The rest is divided according to bedroom square footage. For example, with $3,000 rent, two rooms of 200 and 100 square feet, and a 50% common-space share, the results are $1,750 and $1,250.
Agree on adjustments before calculating
Square footage cannot capture every difference. A private bathroom, parking space, better light, or excessive noise may justify an agreed fixed adjustment after the calculation. Document the final rule with the broader group house expense rules and apply it consistently.
Frequently asked questions
What is the fairest way to split rent?
Equal rent works when rooms and finances are similar. Use income percentages when the household explicitly wants equal affordability. For unequal rooms, split a shared-space portion equally and the remaining portion by bedroom size or agreed room value.
Should a larger bedroom pay more rent?
Usually, but not every dollar of rent pays for the bedroom. Everyone also uses the kitchen, living room, and other common areas, so a hybrid split is often more balanced than allocating the entire rent by bedroom square footage.
How should utilities be split?
Utilities are normally divided equally per resident unless usage differs materially. Keep utilities separate from room-value adjustments so the rent agreement stays understandable.