Splitting rent with roommates sounds simple until you're in a three-bedroom apartment where one room has an ensuite bath, another has a walk-in closet, and the third is half the size. Or when one roommate earns three times as much as the others. There's no single "correct" way to divide rent — but there are three established methods, and the best one depends on your specific situation and your relationship with the people you're living with.
Method 1: Equal Split
Method 2: Split by Room Size
Method 3: Split by Income
Which Method Should You Use?
- Rooms are similar in size and quality: Equal split is simplest and cleanest
- Rooms vary significantly in size, features, or privacy: Room size split is fairest
- Major income differences and everyone is comfortable disclosing earnings: Income-based split is most equitable
- Complex situation with multiple variables: Combine room size as the baseline with negotiated adjustments for specific features
The best method is the one every roommate agrees to before moving in — get it in writing and revisit it if circumstances change. Use the Rent Split Calculator to run all three methods instantly and share the results with your roommates before committing to a split.
What Else to Decide Before Moving In
- How utilities are split (equally, or by usage)
- Who handles the landlord payment and how roommates pay that person
- Shared grocery and household supply arrangements
- Guest policies that affect common space usage
- What happens if one roommate needs to move out early
These conversations are uncomfortable before moving in and significantly worse after. Have them early, agree in writing, and your roommate relationship will be far smoother throughout the lease.