Gross Rent Multiplier (GRM) Calculator
Calculate the Gross Rent Multiplier (GRM) to quickly screen rental properties and estimate value from rent.
How to use this tool
- Enter property price and annual gross rent in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your gross rent multiplier and the full breakdown beneath it.
GRM is the fastest property screen: divide price by annual gross rent. Lower is better — it means you're paying less per dollar of rental income.
Formula
GRM = Property Price ÷ Annual Gross Rent
Implied Value (at 10×) = Annual Gross Rent × 10
How it works
The Gross Rent Multiplier (GRM) is calculated by dividing the purchase price of a property by its total annual gross rental income before any expenses. A lower GRM generally indicates a more favorably priced property relative to its rent.
This calculator also shows an implied value benchmark by multiplying annual rent by 10, representing the common market rule-of-thumb GRM for quick screening. GRM does not account for vacancies, operating expenses, or financing, so it is best used as an initial filter rather than a definitive valuation.
Worked example
Worked example
- Property price: $240,000 | Annual gross rent: $24,000
- GRM = $240,000 ÷ $24,000 = 10×
- Implied value at 10× GRM = $24,000 × 10 = $240,000
GRM: 10× | Implied property value (at 10×): $240,000
Key terms
- Gross Rent Multiplier (GRM)
- Property price divided by annual gross rent; a quick ratio used to screen rental investments before deeper analysis.
- Annual gross rent
- Total scheduled rental income for the year before deducting vacancies or any operating expenses.
- Implied value
- An estimated property value derived from gross rent at a given GRM benchmark, used to check whether the asking price is in line with rental income.
- Net Operating Income (NOI)
- Gross rent minus vacancy and operating expenses (but before debt service); a more accurate measure than GRM for comparing properties.
Frequently asked questions
- What is a good GRM?
- Lower GRMs are better for investors. GRM of 4–7 is excellent; 8–12 is typical for many markets; above 15 makes it difficult to generate positive cash flow. Compare GRM within the same market for useful benchmarks.
- How is GRM different from cap rate?
- GRM uses gross rent (no expense deductions), making it a quick screen. Cap rate uses Net Operating Income (after expenses), making it more accurate. Use GRM to filter prospects; use cap rate for deeper analysis.