Gross Rent Multiplier Calculator
The fastest way to screen a rental listing — price divided by annual rent, in one number.
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Gross Rent Multiplier
10.0x
$2,500/mo gross rent
Lower is generally better (fewer years of rent to cover the price)
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Last updated: August 17, 2026 · Reviewed by the DoCalc team
What Is Gross Rent Multiplier?
Gross Rent Multiplier (GRM) is the fastest screening metric in real estate investing — simply the property price divided by its annual gross rent. Unlike cap rate, it needs no expense data at all, making it useful for a first-pass filter across a long list of listings before doing deeper diligence on the promising ones.
The Formula
A lower GRM means the property's price is a smaller multiple of its annual rent — generally read as a better deal, though (like every metric on this page) it should never be the only number you check.
Worked Example
A $300,000 property renting for $2,500/mo ($30,000/year) has a GRM of $300,000 ÷ $30,000 = 10.0x. That means, roughly speaking, it would take 10 years of gross rent (before any expenses) to equal the purchase price.
Typical GRM Benchmarks
| GRM | General read |
|---|---|
| Under 7x | Strong — rent covers price quickly relative to peers |
| 7x-10x | Fair — typical range in many markets |
| 10x+ | High — rent may not adequately cover ownership costs |
Like cap rate and rental yield, GRM norms vary enormously by market — always compare against similar properties in the same specific area, not a fixed universal rule.
Pros and Cons of Using GRM
Pros: the fastest possible screen — needs only price and rent, no expense data, making it ideal for quickly narrowing a long list of listings.
Cons: it ignores operating expenses entirely, so two properties with identical GRM can have very different actual profitability if their expense ratios differ significantly.
Who Should Use This Calculator
Use it if you're scanning many listings and want the fastest possible first filter. Move to Cap Rate or Net Operating Income once you've narrowed your list and have real expense estimates for a deeper evaluation.
Frequently Asked Questions
What's a good GRM for a rental property?
Under 7x is often considered strong, 7x-10x is a common fair range, and 10x+ can signal the price is high relative to rental income — though norms vary significantly by market.
Is a lower or higher GRM better?
Lower is generally better — it means fewer years of gross rent are needed to theoretically cover the purchase price, suggesting a stronger income-to-price ratio.
How is GRM different from cap rate?
GRM uses gross rent with no expense deductions, making it a much faster but rougher metric. Cap rate uses NOI (rent minus operating expenses), giving a more accurate but slower-to-calculate picture.
Can GRM be used to compare properties in different cities?
Not reliably — GRM benchmarks vary significantly by local market conditions, so it's best used to compare similar properties within the same specific area.
Does GRM account for vacancy?
No — this calculator uses gross potential rent. For a more conservative screen, you could reduce your rent input by an expected vacancy percentage before calculating.
Should I buy a property based on GRM alone?
No — GRM is a fast first-pass screening tool, not a complete investment analysis. Always follow up with Cap Rate, Cash-on-Cash Return, and a real expense estimate before making a purchase decision.