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Gross rent multiplier is the fastest way to screen a rental deal before running a full underwriting model. It takes one line from a listing and one line from a rent estimate. Here is the formula, a worked example, and where it breaks down.
By RentalAnalytics Editorial Team · Published August 19, 2026
Gross rent multiplier is the ratio of a property's price to the annual gross rent it generates, before any expenses are subtracted. As JPMorgan's commercial real estate lending group defines it, "the GRM is the ratio of an investment property's market value to the annual gross rent it generates."[1] A GRM of 10 means the price is roughly ten times the property's annual gross rent.
It is a valuation shortcut, not a profitability measure. Wall Street Prep describes GRM as a "screening tool," a quick and dirty method for sorting a list of properties before spending time on a full model.[2] Investors run it first, then move to cap rate and cash flow analysis on whatever survives the first pass.
The formula is price divided by annual gross rent: GRM = Price ÷ Annual Gross Rent. Annual gross rent is simply the monthly rent multiplied by 12, before deducting vacancy, taxes, insurance, maintenance, or any other operating expense.
Here is a national back-of-envelope example built from two real, current data points. The median price of an existing home sold in the U.S. was $434,100 in July 2026, a 2.0% increase from a year earlier, according to the National Association of Realtors.[3] Median monthly rent nationally was about $1,487 in 2024, or $17,844 a year, per Census Bureau data analyzed by USAFacts.[4] Dividing the two gives a national GRM of roughly 24.3 ($434,100 ÷ $17,844).
That number is not a deal-level GRM. It blends every home type sold nationally with every rental type nationally into one ratio, so it says nothing about a specific property's payback period or whether a deal is actually profitable. It illustrates the calculation. A real GRM has to be run at the property and submarket level, using the actual price and actual rent for that unit, before it means anything for underwriting.
A lower GRM generally means the price sits closer to what the rent can support, which points to a shorter gross payback period and often a better cash-flow starting point. Lower is directionally good, all else equal.
But all else is rarely equal. A low GRM can also come from a weak location, deferred maintenance the market has already priced in, or a submarket with landlord-unfriendly regulation that depresses price relative to rent. Use GRM to flag candidates worth a closer look, not to rank final investment decisions.
GRM leaves out every operating expense. JPMorgan's team is direct about this limitation: "the 'gross' in GRM means it includes all rent payments without any deductions. The formula doesn't factor in a property's operating expenses."[1] Two properties with an identical GRM can have very different net returns if one has a low operating expense ratio and the other does not.
That is why JPMorgan's own guidance frames GRM as a starting point rather than a conclusion: it "shouldn't be the final step in an investor's analysis," because it doesn't incorporate operating expenses, which can significantly affect a property's profitability.[1] The operating expense ratio is the natural next check once a property clears the GRM screen.
GRM divides price by gross rent. Cap rate divides net operating income, which is gross rent minus operating expenses, by price. Wall Street Prep calls cap rate the more comprehensive and informative metric, while noting it is also more time-consuming to calculate because it requires a full expense breakdown.[2]
The practical workflow: use GRM to cut a long list of listings down fast, then run cap rate on the shortlist. A deeper comparison of the two metrics, including when cash-on-cash return matters more than either one, is in our cap rate vs. cash-on-cash guide.
Treat GRM as a filter, not a final answer. Pull the asking price and the trailing or estimated annual rent for every property on your list, calculate GRM for each, and rank them. Properties with an unusually high GRM relative to comparable listings in the same submarket are overpriced for their income and can usually be dropped without further work.
For the rent side of the calculation, do not guess. Anchor a vacant or off-market property with a HUD Fair Market Rent lookup[5] and local comparable listings, or automate it with the RentalAnalytics rent estimator. Then confirm whatever clears the GRM screen with the cap rate calculator, which layers in operating expenses and financing to show actual return. A combined market view that pairs rent, vacancy, and cap rate benchmarks by ZIP code is in development on our landlord market summary tool.
Yes. Per JPMorgan's commercial lending team, there is "no single standard for what makes a good GRM," since it varies by market and property type, and multifamily properties in major cities typically run higher GRMs than properties in smaller cities or suburban areas.[1] A single-family rental in a secondary market and a multifamily building in a gateway city are not comparable on GRM alone.
This is also why current rent data matters for interpreting GRM over time. Nationally, median monthly rent was about $1,487 against median renter household income of about $4,537 in 2024, per Census Bureau data analyzed by USAFacts.[4] Rent moves independently of price, so GRM on the same property can shift even without a sale, simply because the rent side of the ratio changed. Recalculate GRM against current rent, not the rent used when a listing first went live.
There is no single good GRM. It depends on the market and property type, since major-city multifamily properties typically carry higher GRMs than smaller cities or suburban single-family rentals. Compare a property's GRM only against other properties in the same submarket and class.
A lower GRM generally means the price is closer to what the rent can support, which points to a shorter payback period. It is not automatically better, because a low GRM can also signal a weak location, deferred maintenance, or a landlord-unfriendly submarket that depresses price relative to rent.
GRM divides price by gross rent and ignores operating expenses entirely. Cap rate divides net operating income, which is rent minus operating expenses, by price. GRM is faster to calculate and useful for screening; cap rate takes more inputs but reflects actual profitability.
Not directly. GRM is shaped by local price-to-rent dynamics, so a GRM of 12 can be normal in one metro and expensive in another. Use GRM to rank properties within the same market, then use a cap rate calculator to compare across markets on a profitability basis.
Use actual trailing rent from a rent roll if the property is already leased. For a vacant or off-market property, anchor the estimate with HUD Fair Market Rents and local comparable listings, then multiply the monthly figure by 12.
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