About This Calculator
The Rental Income Calculator gives landlords and investors a clear picture of what a property actually earns after accounting for vacancy, expenses, and management fees.
Gross Rental Income is total rent collected assuming 100% occupancy. Effective Gross Income adjusts for vacancy. Net Operating Income (NOI) is what remains after all operating expenses — this is the number that drives property valuation.
The Gross Rent Multiplier (GRM) = Property Value ÷ Annual Gross Rent. A GRM under 10 is generally excellent; 10–14 is fair; above 14 may indicate the property is overpriced for its income. Use GRM for quick screening — cap rate for deeper analysis.