What is the gross rent multiplier?

GRM is the property price divided by its gross annual rental income. It is a quick screening ratio for comparing rental properties.

It depends on the market, but lower GRMs are generally more attractive because the property costs fewer years of gross rent to pay for. Many investors look at GRMs between 4 and 12.

Does GRM account for expenses?

No — GRM uses gross rent only. For an expense-aware return, use cap rate or cash-on-cash return instead.

How do I calculate GRM from monthly rent?

First annualise the rent by multiplying monthly rent by 12, then divide the price by that figure. For example, $1,500/month is $18,000/year, so a $200,000 property has a GRM of 200,000 ÷ 18,000 ≈ 11.1.

What is the difference between GRM and cap rate?

GRM uses gross rent and ignores expenses, so it is a fast first screen. Cap rate uses net operating income (rent minus operating costs), giving a truer yield. A low GRM with high expenses can still be a poor deal.

How do I estimate value from GRM?

Rearrange the formula: estimated price = GRM × gross annual rent. If comparable properties trade at a GRM of 9 and a unit grosses $24,000 a year, an indicative value is about $216,000.

Can GRM compare properties in different markets?

GRM is most reliable within one market, since typical multipliers vary by region, property type, and rent levels. Use it to rank similar properties, not to compare a city flat against rural land.

Gross Rent Multiplier Calculator

The gross rent multiplier (GRM) is a fast property-screening ratio: purchase price divided by gross annual rent. It tells you roughly how many years of gross rent it would take to cover the price, so investors use it to shortlist rental properties before running a full analysis.

How it works

The calculator applies one formula:

GRM = property price ÷ gross annual rent

“Gross” means total rental income before any expenses such as taxes, insurance, maintenance or vacancy. A lower GRM means the property costs fewer years of rent to pay for, which is generally more attractive. You can also rearrange it to estimate value: price ≈ GRM × gross annual rent.

Example

A property is listed at $240,000 and rents for $2,000 per month:

gross annual rent = 2,000 × 12 = $24,000
GRM = 240,000 ÷ 24,000 = 10.0

A comparable unit at the same $24,000 rent but priced at $200,000 has a GRM of 8.3 — the lower multiplier flags it as the better-value option to investigate.

Price	Gross annual rent	GRM
$200,000	$24,000	8.3
$240,000	$24,000	10.0
$300,000	$24,000	12.5

GRM ignores expenses, so pair it with cap rate or cash-on-cash return before deciding. All calculations stay in your browser.