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Rent Roll Gross Income Calculator

Roll up a property’s gross potential rent from unit count and average rent, add other income, and see the annual, monthly and per-unit totals.

Number of units

Average monthly rent

Other monthly income

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How it works

GPR = units × avg rent × 12 · Gross scheduled income = GPR + other income × 12

Gross potential rent (GPR) is what the property would collect if every unit were rented at market for a full year — the top line of a rent roll before any vacancy or loss. Ancillary income from parking, laundry, storage and pet fees is added to reach gross scheduled income, the figure lenders and buyers start from. It is a potential, not a promise: real collections are lower once vacancy and credit loss are subtracted.

Worked example

Ten units at $1,500 give $15,000 a month, or $180,000 of gross potential rent a year. Add $500 a month of other income ($6,000) and gross scheduled income is $186,000 — $18,600 per unit.

Frequently asked questions

What is the difference between gross potential and effective gross income?

Gross potential rent assumes 100% occupancy at market rent. Effective gross income subtracts vacancy and credit loss and adds other income, so it reflects what you realistically collect. GPR is the ceiling; EGI is the working number.

Should other income be in the rent roll?

Recurring ancillary income — parking, laundry, storage, pet and application fees — belongs in gross scheduled income because it is real, repeatable revenue. Keep one-time items out so the figure stays a reliable annual run-rate.

Why do buyers care about the rent roll?

The rent roll is the revenue foundation for value: it drives net operating income and, through the cap rate, the price. A rent roll with below-market rents can signal upside, while one padded with optimistic rents signals risk.

Related calculators

Effective Gross Income Calculator

Turn gross potential rent into effective gross income by subtracting vacancy and credit loss and adding other income — the real top line of a property.

Operating Expense Ratio Calculator

Divide operating expenses by effective gross income to get the operating expense ratio — and the net operating income left over.

Gross Rent Multiplier Calculator

Compute the gross rent multiplier — price divided by annual rent — to screen rental deals in seconds before deeper analysis.

Rental Property Cash Flow Calculator

Work out the monthly and annual cash flow of a rental property from rent, vacancy, operating costs and the mortgage — plus NOI, cap rate, cash-on-cash return, DSCR, break-even rent and occupancy, a year-by-year projection with rent and expense growth, equity, sale proceeds, total profit and IRR.

Educational estimate, not financial or investment advice.