Gross Rent Multiplier Calculator
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Gross Rent Multiplier8.33
The Gross Rent Multiplier Calculator gives a quick read on whether a rental is priced fairly by comparing its asking price to the rent it produces. GRM divides the property price by the annual gross rent, so a lower number means you recover the purchase price from rent faster. Switch to the reverse mode to enter a target multiplier for your market and instantly see the price that multiplier implies for a given rent.
Formula
GRM = property price / annual gross rent; implied price = target GRM × annual gross rent
- property price
- Purchase price or current market value of the property
- annual gross rent
- Total yearly rent before vacancy and operating expenses
- target GRM
- The multiplier typical for comparable properties in the market
How it works
- In Find GRM mode, enter the property price and the annual gross rent; the calculator divides price by rent to return the multiplier.
- In Find Price mode, enter a target GRM that reflects comparable sales in your area along with the annual rent to get the implied purchase price.
- Gross rent is the full scheduled rent before vacancy and expenses, which keeps GRM simple but means it ignores operating costs.
Worked example
A duplex is listed at $300,000 and collects $3,000 a month in total rent.
- Annual gross rent = 3,000 × 12 = $36,000.
- GRM = 300,000 / 36,000 = 8.33.
- A GRM of 8.33 means the price equals about 8.3 years of gross rent.
A gross rent multiplier of 8.33.
Frequently asked questions
- What is a good gross rent multiplier?
- It depends on the market, but many investors look for a GRM between 4 and 8. Lower multipliers signal a cheaper price relative to rent, while high-demand metros often carry multipliers well above 10.
- How is GRM different from the cap rate?
- GRM uses gross rent and ignores expenses, so it is a rough screening tool. The cap rate uses net operating income after expenses, making it a more accurate measure of return but slower to compute.
- Should I use monthly or annual rent for GRM?
- The standard formula uses annual gross rent, so this calculator expects the yearly figure. If you only know the monthly rent, multiply it by twelve before entering it.
- Can GRM tell me if a property is overpriced?
- Compared against the typical GRM for similar local sales, yes. A property priced at a noticeably higher multiplier than its comparables is likely expensive relative to the rent it generates.