Shared-home planning
Roommate rent and utilities split
Try equal, room-feature, income-based, or custom percentage methods without sending income or cost data anywhere.
Choose a method before you calculate
An equal split is simple. Room-feature weights can reflect a private bathroom, size, closet, or other agreed difference. Income-based and custom methods make different trade-offs. The calculator presents the math; roommates still need to agree on the method, amounts, due dates, and what happens when bills change.
Methodology and limitations
All shares are calculated from the totals and method you enter. The room-feature method applies your relative weights only to rent; shared utilities and expenses are divided evenly. Income-based shares apply entered income proportions to the total. Custom percentages must total 100% for rent and 100% for the shared categories. The budget-pressure signal is a planning prompt, not a verdict.
Questions people ask
Is an equal roommate split always fair?
No. Equal, room-feature, income-based, and custom splits can each be reasonable depending on what roommates agree matters. This tool does not label one method universally fair.
How does the room-feature method work?
Enter a positive weight for each occupied room. A larger room or agreed feature can be reflected by a higher relative weight; the calculator allocates rent by those weights and divides shared utilities and expenses equally.
What does the budget-pressure signal mean?
It is a planning signal based only on the income entered and the selected split. It is not a judgment of a roommate or a prediction of whether someone can pay.
Sources / methodology
- U.S. Census Bureau — Ownership, Home Value, RentCensus describes gross rent as contract rent plus utility and fuel costs; this calculator still uses the exact costs you enter.
- U.S. Department of Housing and Urban Development — Tenant ResourcesHUD notes that applicants may need to budget for application fees and a security deposit; actual lease terms vary.
- Consumer Financial Protection Bureau — Rental-related costsThe CFPB’s archived renter-assistance guidance identifies costs such as moving expenses, deposits, application fees, screening fees, rent, utilities, and internet as possible rental-related needs.