What Is Gross Rent Multiplier?
The gross rent multiplier (GRM) is a quick screening ratio that divides a property's price by its gross annual rent, before any expenses. A lower GRM means more rent per dollar of price, but because it ignores vacancy and operating costs, it only ranks listings for a closer look.
Gross Rent Multiplier in plain English
The gross rent multiplier tells you how many years of gross rent it would take to equal the price. A $300,000 property renting for $30,000 a year has a GRM of 10.
It is fast because it needs only price and rent, but it ignores expenses, vacancy and financing, so it is a first-pass screen rather than a valuation.
Formula
GRM = Property Price ÷ Gross Annual Rental Income- Property Price
- The asking or purchase price.
- Gross Annual Rental Income
- A full year of scheduled rent before vacancy and expenses.
Worked example
Gross rent multiplier as a first screen
Illustrative example - round numbers, not current market data. Calculated with Reaixo's calculator engines.
Assumptions
- Asking price
- $400,000
- Scheduled rent
- $3,000 a month
- GRM of similar recent sales
- 10.00×
| Step | Calculation | Result |
|---|---|---|
| 1. Gross annual rent | $3,000 × 12 | $36,000 |
| 2. GRM | $400,000 ÷ $36,000 | 11.11× |
| 3. Price at the comparable GRM | $36,000 × 10.00× | $360,000 |
Gross rent multiplier: 11.11×. At 11.11× the asking price is above the 10.00× similar rentals sold for - about $40,000 more for the same rent. That is a reason to look closer, not a verdict: GRM ignores expenses.
What this calculation leaves out
- GRM uses gross rent, so two buildings with the same GRM can have very different taxes, insurance and repair costs. Follow up with NOI and cap rate.
- Some analysts use monthly rent instead of annual; a monthly GRM is twelve times larger. Check which one a source quotes.
Calculate Gross Rent Multiplier
Gross rent multiplier calculator
Price ÷ Gross Annual Rent
Why it matters
GRM is faster to calculate than cap rate since it skips operating expenses, making it useful for quickly screening a large list of properties before a deeper analysis.
When Gross Rent Multiplier is used
- Screening a long list of small rentals before spending time on full expense analysis.
- Sanity-checking an asking price against the GRMs of similar rentals that sold nearby.
- Rough-valuing a property when only the rent roll is available.
Common mistakes
- Comparing GRMs across areas with very different tax and expense levels.
- Using GRM as a substitute for cap rate.
- Using asking rents rather than achievable rents.
Gross Rent Multiplier vs. Cap Rate
Price divided by gross annual rent, before any expenses — a fast screening number that ignores operating costs entirely.
Net operating income divided by property value, after operating expenses — a more complete (but slower to calculate) return measure.
GRM is useful for quickly ranking a long list of listings; cap rate is the better number once a property is worth a closer look.
Gross Rent Multiplier: frequently asked questions
What is a good gross rent multiplier?
Lower generally means more rent per dollar of price, but a good GRM depends on the local market and expense levels. Compare with similar properties nearby.
Is GRM better than cap rate?
No, it is quicker but less complete. Cap rate subtracts operating expenses; GRM does not.
Can GRM estimate a property's value?
It can give a rough estimate. Multiplying a property's rent by the typical GRM of similar sales gives a ballpark, which should be checked with a full income analysis.
Related Terms
Where it fits
- Investing, Deal Sourcing: before this, ARV; next, Comparable Sales.
More Investing Terms
Recommended next step
Move from GRM screening to an expense-based analysis.
Cap rate calculator →Apply it to a specific property: Rental Property Analysis.
Sources and review
No regulator defines this term; the page follows common industry practice.
Where this applies: Not regulated. Investment ratios and budgeting conventions are industry practice; lenders and analysts may define inputs differently.
Last reviewed: · Updated:
Examples use illustrative figures; rules of thumb are labelled as such. Rates, limits and program rules change - confirm current figures with your lender or a qualified professional.
This definition is provided for general educational purposes and is not financial, legal, tax, or real estate advice. Verify important decisions with appropriately qualified professionals.
Apply these investment calculations to a real property
Run the numbers with the free calculator, or get a property-specific analysis built on the same calculations.
- Free calculatorCap Rate Calculator →Runs in your browser; nothing to sign up for.
- Paid reportRental Property Analysis →Model rent, cash flow, cap rate and returns. Price shown before checkout.
Or analyze a specific property: Essential Property Analysis, $19 · Property Decision Analysis, $49 · Professional Property Analysis, $99. You choose the depth before you pay.