The 1% rule targets monthly rent of ~1% of purchase price.
Calculation details
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What does this calculator estimate?
Rent-to-value is the annual rent expressed as a percentage of the property value — the flip side of the price-to-rent ratio. It's a quick gauge of income value. Enter the property value and monthly rent to get it.
- Rent-to-value = annual rent ÷ value × 100
- Inverse of the price-to-rent ratio
- Higher rent-to-value = more income per dollar of price
What rent-to-value shows
Rent-to-value is the monthly version of gross yield — how much rent the price produces. Investors use it for the '1% rule': $1 of monthly rent per $100 of price (1% monthly, 12% annual). Markets below that are cash-flow challenged.
Limitations to watch for
The ratio ignores expenses, vacancies, and financing — a screen, not a profit test. High RTV markets often have lower appreciation or higher costs. Compare within the same market.
How to use it in practice
Divide the market rent by the price for each candidate. Use the 1% rule as a floor for cash-flow investing. Follow up with the cash flow and cap rate calculators on the shortlist.
['Enter the monthly rent.', 'Enter the property value.', 'Read the monthly and annual yield.']
What rent-to-value measures
Rent-to-value compares monthly rent to property value: a $300,000 property renting $2,000 monthly has a 0.67 percent monthly ratio (about 8 percent annualized). It is a quick yield screen for income property.
The 1% rule
The classic screen: monthly rent should be at least 1 percent of purchase price. A $200,000 property at $2,000 rent passes; at $1,500 it fails. The rule is a fast filter, not a full analysis — expenses and financing decide the real return.
Interpreting the ratio
Higher rent-to-value means more rent per dollar of price — generally a better cash-flow screen. Low ratios in expensive markets reflect appreciation expectations rather than rent yields. Compare within a market and property type.
A worked example
A $250,000 condo renting $1,700 monthly: ratio = 0.68 percent — below the 1 percent rule, typical of appreciating markets. A $180,000 duplex renting $1,800: ratio = 1.0 percent — passes the screen. The calculator returns the ratio and the rule verdict.
Pairing with cap rate
Rent-to-value uses gross rent; cap rate uses net operating income. A property passing the 1 percent rule can still fail as an investment if expenses are high. Use the ratio to screen, the cap rate to decide.
How this calculator works
Formula
Rent-to-value = monthly rent ÷ property value × 100. It's the monthly gross yield — the investor's quick screen for rental cash potential.
Worked example
$2,000/month rent on a $300,000 property: 0.67% monthly, 8% annualized.
Assumptions to verify
- Rent is at market rate.
- Full occupancy is assumed.
- No expenses are included.
Frequently asked questions
What is rent-to-value?
Monthly rent ÷ property value × 100: $2,000 ÷ $300,000 = 0.67%/month.
What is the 1% rule?
At least $1 of monthly rent per $100 of price — a common cash-flow screen for investors.
Is RTV the same as rental yield?
Similar — rental yield is annual (rent × 12 ÷ price); RTV is the monthly version.
What's a good RTV?
1% monthly (12% annual) is the investor's rule of thumb; many markets run below it.
Does it include expenses?
No — it's gross rent only. Run the cash flow numbers for the real test.
Why do expensive cities fail the rule?
Prices outpace rents — cash flow is weak, and investors rely on appreciation instead.
How do I improve RTV?
You can't change the market — look in higher-yield areas or negotiate the price down.
What is a good rent-to-value ratio?
Monthly rent of at least 1% of price is the classic screen.
How do I calculate it?
Monthly rent ÷ property price.
Why do expensive markets fail the rule?
Low ratios there reflect appreciation expectations, not cash-flow returns.
Cite this tool
BoringToolsKit. “Rent-to-Value Calculator.” boringtoolskit.com/rent-to-value-calculator/ (reviewed 2026-08-25). Free to reference in articles, syllabi, and answer posts with a link.
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