Roommates, rent splits, and the lease you sign
Joint vs individual leases. Splitting bills fairly. Why a household ledger saves friendships.
Joint lease vs individual lease
- •JOINT — everyone is on ONE lease, jointly liable. If one roommate skips rent, the others must cover it.
- •INDIVIDUAL — each person on a separate room lease. You're only responsible for your share. Common at student housing.
Two splits work: (1) by INCOME (40% of total income → 40% of rent), (2) by ROOM SIZE (master pays more). Pick before signing. Never re-litigate later.
The household ledger
- •Use Splitwise (free) or a shared spreadsheet.
- •Log every shared expense within 24 hours.
- •Settle balances on the same day every month.
Read the lease BEFORE signing. Know your state's security deposit rules — most states cap deposits and require return within 14–30 days. NOLO has a state-by-state guide.
Real life: meet Three incomes, three rents
Three roommates: $52k, $68k, $41k. Total $161k. Rent is $2,400/mo. They split by income: 32%/42%/26% = $773/$1,008/$619. Lasted 12 months without one resentful conversation.
$2,400 split 32/42/26 by income share
Takeaway
Decide the split BEFORE signing. Use a shared ledger. Read the lease (especially deposit rules). Pick joint vs individual based on how much you trust the worst-case roommate.
On a JOINT lease, what happens if one roommate skips rent?
Takeaway: Money fights between roommates are usually about unspoken expectations and unread leases.
Try together: Read a real lease together, line by line. Highlight: total rent, deposit, late fee, joint/individual, deposit return timeline.