Gross Rent Multiplier Calculator

The gross rent multiplier (GRM) is the property price divided by its annual gross rent. For example, a $300,000 property renting for $2,000 a month collects $24,000 a year, so its GRM is 300,000 divided by 24,000, or 12.5. It tells you how many years of gross rent the price represents, which makes it a fast way to compare rentals.

Divide the purchase price by the annual gross scheduled rent. If you only know the monthly rent, multiply it by 12 first to annualize it. This calculator does that step for you when you enter rent as a monthly figure, so you can paste either number.

There is no universal cutoff. A lower GRM means less price per dollar of gross rent, but it says nothing about expenses, vacancy, financing, or condition. Compare properties with similar location, tenant demand, condition, and operating profile, then evaluate the deal with full underwriting.

GRM uses gross rent and ignores expenses, while the capitalization rate uses net operating income, which is rent minus operating costs like taxes, insurance, maintenance, and vacancy. GRM is a quick screening filter; the cap rate is a more complete profitability measure. A low GRM can still hide weak cash flow if the property carries high expenses.

Switch the calculator to value mode and enter the rent plus the GRM you are willing to pay. It multiplies your desired GRM by the annual gross rent to return a price target, since price equals GRM times annual rent. This helps you set a maximum offer that keeps you in line with comparable sales.

No. It is an educational estimate, not financial or investment advice. GRM is one screening ratio and ignores expenses, vacancy, financing, and condition, so confirm any deal with full underwriting and a licensed professional before you buy.