A rent roll is a one-page snapshot of every unit you own, showing each tenant, lease term, contracted rent, and current balance as of a single date. Where a ledger records the running history of one tenant's charges and payments, a rent roll lines up all of your units side by side so you can read the whole portfolio in one glance: who is in, who is vacant, what each unit should be paying, and who is behind right now.
In practice
Say you own a fourplex. On the first of the month you build a rent roll with one row per unit. Unit 1 rents to a tenant on a lease through December at $1,400, paid in full, balance $0. Unit 2 rents at $1,350 on a month-to-month, partial payment of $1,000 in, balance $350. Unit 3 rents at $1,450 through August, paid, balance $0. Unit 4 is vacant, market rent $1,400, balance not applicable.
Add the contracted rents on the occupied units and you get $4,200 in scheduled income for the month. Subtract the $350 still owed on Unit 2 and you have collected $3,850 so far. The vacant Unit 4 is $1,400 of rent you are not earning, which is the line that connects a rent roll to your vacancy rate: one empty door out of four is a 25% physical vacancy this month. That single page tells you scheduled income, collected income, and lost income without opening four separate records.
Why it matters to a small landlord
A current rent roll is the document a lender asks for first when you refinance or buy your next property, because it is the fastest honest read on whether the building actually produces the income the seller claims. It is also where you spot a slow problem early: a balance that creeps up two months running, a lease expiring in 30 days you forgot to renew, a unit renting $200 under market. Those are easy to miss when each tenant lives in a separate spreadsheet tab. Keeping the roll accurate is the backbone of a tight monthly close, and the scheduled-rent line feeds straight into your net operating income once you net out operating costs.
rents.ai builds a monthly rent roll on the Finances page from the charges and payments you record, deriving each balance and on-time status automatically, though it does not collect rent for you, so you still enter every payment yourself.
A rent roll rarely stands alone. It rolls up the per-tenant detail you keep in a rent ledger, it exposes your vacancy rate at a glance, and the income it totals is the top line of your net operating income. Read those three together and the rent roll stops being a chore and starts being the dashboard for your portfolio.