1% Rule Calculator

Quickly screen rental properties using the 1% rule - a simple guideline that suggests monthly rent should be at least 1% of the purchase price for a property to potentially generate positive cash flow.

Property Details
Enter purchase price and expected rent

$300,000

$2,500

1% Rule Analysis
Property screening results

Close (0.7-1.0%)

Property is close to the 1% rule. May still be viable in strong appreciation markets

1% Target Rent

$3,000

Actual Rent Ratio

0.83%

Your Monthly Rent:$2,500
1% Rule Target:$3,000
Difference:$500 below

Formula:

1% Rule Target = Purchase Price × 1%

= $300,000 × 1%

= $3,000

Understanding the 1% Rule

The 1% Rule is a quick screening tool used by real estate investors to identify potentially profitable rental properties. It suggests that a property's monthly rent should be at least 1% of its total purchase price to have a good chance of generating positive cash flow.

How to Use the 1% Rule

The 1% rule is best used as an initial screening tool, not a definitive investment criterion. If a property passes the 1% rule, it warrants further detailed analysis. If it fails, you may want to move on to other opportunities unless there are compelling reasons (like strong appreciation potential) to proceed.

When the 1% Rule Works Best

  • Lower-priced markets: More common in affordable housing markets
  • Value-add properties: Properties needing renovation that can command higher rents
  • Multi-family properties: Often easier to achieve 1% rule with multiple units
  • Cash flow focused: When immediate income is prioritized over appreciation

Limitations of the 1% Rule

  • Doesn't account for operating expenses, taxes, or insurance
  • Ignores financing costs and down payment requirements
  • Doesn't consider property condition or renovation needs
  • May be unrealistic in high-appreciation markets
  • Doesn't factor in vacancy rates or property management costs

Regional Variations

The 1% rule is harder to achieve in expensive coastal markets like San Francisco, New York, or Los Angeles, where investors often accept 0.5-0.7% ratios due to strong appreciation potential. Conversely, in more affordable Midwest or Southern markets, the 1% rule is more commonly achievable.

Pro Tip: Use the 1% rule as a quick filter, but always conduct comprehensive due diligence including detailed cash flow analysis, market research, property inspection, and consideration of your investment goals. A property that passes the 1% rule still needs to be evaluated for actual expenses, financing terms, and long-term potential.