Gross rent multiplier for fast property comparison
For rental investors needing a one-number metric: purchase price divided by annual gross rents to compare properties across markets.
Gross Rent Multiplier (GRM) Calculator
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Create Free AccountWhat it does
The GRM Calculator divides purchase price by annual gross rent to produce a Gross Rent Multiplier — a quick screening metric that tells you how many years of gross rent you're paying for a property. A GRM of 12 means you're paying 12 times annual rent to acquire the property.
GRM is the fastest pre-underwriting filter because it requires only purchase price and rent — no expense modeling needed. Properties trading at lower GRMs typically offer higher cash flow, while high GRM properties often require appreciation or market-specific factors to justify pricing. By knowing your market's average GRM, you instantly spot outliers worth deeper analysis.
Who it's for
- Market researchers benchmarking property valuations and identifying pricing outliers quickly
- New investors learning the relationship between price, rent, and cash flow potential
- Real estate agents marketing investment properties and positioning pricing to buyer segments
- Wholesalers evaluating contracts and comparing deal metrics to market standards
How it works
Input purchase price
Total acquisition cost or appraised value.
Input annual gross rent
Total revenue from all units or the single unit.
Divide
Price ÷ annual rent = GRM. Lower GRM = better cash flow.
Why it matters
Compare 10+ properties in minutes
Identify markets with better rent-to-price dynamics
Flag overpriced or underpriced properties quickly
Benchmark against market averages
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Full access to Gross Rent Multiplier (GRM) Calculator, 66 other calculators, live FRED rates, AI deal verdicts, conservative/base/optimistic scenario projections, printable reports, and vault storage.
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What every calculator includes
67 Calculators
Every investment strategy — rental, flip, BRRRR, mortgage, commercial, wealth building.
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Conservative, base, and optimistic 1/2/5/10-year return modeling.
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Claude-powered analysis — strengths, risks, and actionable recommendations.
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Address Auto-Fill
Enter a property address to pre-fill value, rent, and tax data automatically.
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Mortgage rate fields pre-populate with Federal Reserve interest rate data.
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Every formula audited against professional underwriting standards.
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Frequently asked questions
What's a good GRM?
Varies by market. National average is 8–12x. Below 8x is excellent; above 15x is risky unless appreciation is strong.
How do I use GRM across different markets?
Compare properties in the same market using GRM. Comparing GRM across markets is less reliable — local fundamentals vary.
Does GRM account for expenses?
No — it's a gross metric. Two properties with identical GRM can have very different NOI if expenses differ. Always dig deeper.
Should I use current or market rent?
Use market rent for a standardized comparison. If the property is underrented, market rent shows its true value-add potential.
Is this calculator free to use?
Yes — create a free Investor Starter account to run 1 calculator per day. No credit card required. Upgrade to Core ($49/mo) for unlimited access to all 67 calculators.
How accurate are the results?
Results are only as accurate as your inputs. The formulas use industry-standard real estate investment math. Always verify with a licensed professional before committing capital.
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