Rent Split Calculator
Split rent fairly by income between two or three roommates or partners.
How it works
each share = rent × (that person’s income ÷ combined income)
Each person pays the same fraction of the rent as their share of the household’s combined income, so rent takes a similar bite out of everyone’s paycheck. Enter incomes on the same basis for all (all gross or all take-home). With the third income at 0, it splits between two people.
Worked example
$2,400 rent between incomes of $60,000 and $45,000: combined $105,000. Person 1 pays 60/105 of the rent = $1,371.43; Person 2 pays $1,028.57. An even split would be $1,200 each.
Frequently asked questions
Is splitting by income actually fair?
It’s one common definition of fair — equal burden rather than equal dollars. Alternatives are a straight even split or splitting by room size and amenities. Many households blend approaches; the right one is whatever everyone agrees to before signing.
Should we use gross or take-home income?
Either works as long as everyone uses the same basis. Take-home reflects real capacity better when tax situations differ a lot (e.g. one person has heavy student-loan withholding).
What about unequal rooms?
Price the rooms first (say the primary with private bath is worth $200/month more), subtract those premiums from the rent, then split the remainder by income.
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This calculator is for educational purposes. Double-check important results before acting on them.