Gross Rent Multiplier Calculator
The gross rent multiplier is the quickest way to size up an income property before digging into the full numbers. It compares the asking price to a single year of gross rent, giving you a clean multiple you can scan across many listings at once. Because it skips operating expenses and financing, GRM is a screening metric, not a final valuation, but it is invaluable for spotting which deals are worth a closer look. This calculator takes the property price and annual gross rent and returns the GRM, the implied price at a target multiplier, and the gross rent yield.
Gross rent multiplier formula
GRM = property price / annual gross rent
Price at target = target GRM * annual gross rent
Gross rent yield % = (annual gross rent / property price) * 100
The gross rent yield is the inverse of the GRM expressed as a percentage. A GRM of 8 corresponds to a 12.5% gross yield before expenses.
How to use GRM well
- Always use annual gross rent for consistency; a monthly GRM is twelve times larger.
- A lower GRM means a cheaper price relative to rent, which usually favours the buyer.
- GRM ignores expenses, so a low GRM can still be a poor deal if costs are high; follow up with a cap rate.
- Use comparable sold properties to set your target GRM for the local market.
- The target-GRM output gives a quick supportable price from rent alone.
Gross rent multiplier: frequently asked questions
What is the gross rent multiplier?
The gross rent multiplier (GRM) is the ratio of a property's price to its annual gross rental income. A GRM of 8 means the price equals eight years of gross rent. It is a fast screening tool that ignores operating expenses, financing, and taxes, so it is best used for a first-pass comparison rather than a final decision.
How is GRM calculated?
GRM equals property price divided by gross annual rental income. For example, a US$400,000 property that rents for US$50,000 a year has a GRM of 8.0. Some investors use monthly rent instead, producing a much larger number, so always confirm whether a quoted GRM is annual or monthly.
What is a good gross rent multiplier?
Lower is generally better for a buyer because it means a lower price relative to rent. Typical residential GRMs range from about 4 to 10 depending on the market, but there is no universal target. Compare GRM only against similar properties in the same area, since high-rent or high-growth markets carry higher multiples.
How does GRM differ from the cap rate?
GRM uses gross rent and ignores expenses, while the cap rate uses net operating income after expenses. GRM is faster but cruder; the cap rate is more accurate because it reflects how expensive a property is to run. Use GRM to shortlist deals and the cap rate to evaluate them.
Can I estimate property value from GRM?
Yes. If you know the typical market GRM and a property's gross annual rent, value equals GRM times gross annual rent. This calculator includes a target-GRM input so you can estimate a supportable price from rent and a chosen multiplier.
Official sources
- U.S. Securities and Exchange Commission, Investor.gov: Investing glossary.
- U.S. Census Bureau: Housing statistics.
Reviewed by the CalculatorHub team, edited by James Graham, 17 June 2026. See our methodology.