Should roommates split rent based on income?

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Only if everyone genuinely agrees. Splitting by income can help friends or couples with very different earnings share a place, but among roommates it more often breeds resentment. Most households split by room size and features instead, which is easier to justify and does not require anyone to share their pay. Income-based splits work best between people whose finances are already intertwined, like a couple, or close friends who have talked it through. Between roommates who met recently, they raise awkward questions: does the split change if someone gets a raise, loses a job or starts a side business? Does the higher earner get the bigger room? If you do use income, keep it simple: Each person pays the same percentage of their take-home pay Agree to review it once or twice a year, not every time pay changes Put the actual dollar amounts in writing, not just the formula Remember the landlord still treats everyone equally, so on a joint lease each person is still liable for the full rent A middle path is splitting rent by room, then letting the higher earner cover more of the extras, such as the streaming accounts or the cleaner. That keeps the core rent fair by square footage without anyone having to disclose a salary. If the gap is large, the lower earner may do better looking for a place they can afford on their own share than relying on a split that could change.

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