Investing in real estate requires a strategic approach to ensure profitability. Two of the most widely used rules for quickly assessing rental property potential are the 1% Rule and the 50% Rule. These guidelines help investors determine whether a property is worth pursuing and how much of their rental income will go toward expenses. In this guide, we break down both rules, their significance, and how to use them together for smarter investment decisions.
What Is the 1% Rule in Real Estate Investing?

The 1% Rule is a guideline that helps investors quickly evaluate whether a rental property will generate sufficient income relative to its purchase price. It suggests that a property’s monthly rent should be at least 1% of the purchase price for it to be a viable investment.
How Does the 1% Rule Work?
The calculation for the 1% Rule is simple:
For example, if a property is priced at $200,000, the expected minimum rent should be:
This means that if the property can generate $2,000 or more in monthly rent, it meets the 1% Rule and may be worth considering as a rental investment.
Why Is the 1% Rule Useful?
- Quick Screening Tool: The 1% Rule helps investors filter out properties that may not generate sufficient cash flow.
- Simplifies Decision-Making: It provides an easy way to compare multiple properties in different markets.
- Risk Management: Ensures that rental income is likely to cover mortgage payments and operating expenses.
However, the 1% Rule is only a starting point—it does not account for property condition, neighborhood trends, or vacancy rates.
What Is the 50% Rule in Real Estate Investing?

The 50% Rule helps investors estimate operating expenses for rental properties. It states that, on average, a property’s operating expenses (excluding mortgage payments) will be 50% of the rental income.
How Does the 50% Rule Work?
The formula for the 50% Rule is:
For example, if a property generates $2,000 per month in rent:
This means that approximately $1,000 per month will go toward expenses such as property taxes, insurance, repairs, and management fees.
Why Is the 50% Rule Important?
- Realistic Cost Estimation: Many new investors underestimate expenses. This rule provides a conservative estimate to prevent financial surprises.
- Helps Calculate Cash Flow: By deducting estimated expenses from rental income, investors can quickly determine potential profits.
- Useful for Budgeting: Allows investors to plan ahead for repairs, vacancies, and maintenance costs.
How to Use the 1% Rule and 50% Rule Together
When used together, the 1% Rule and 50% Rule provide a simple yet effective way to assess the financial viability of a rental property.
Example Analysis
- Property Price: $200,000
- Expected Monthly Rent (1% Rule): $2,000
- Estimated Expenses (50% Rule): $1,000
- Net Income Before Mortgage: $1,000
If the mortgage payment is $800 per month, then: This property would generate a positive cash flow of $200 per month, making it a potential investment opportunity.
Conclusion
The 1% Rule and 50% Rule are valuable tools for real estate investors to quickly assess rental properties. While these rules provide solid benchmarks, investors should also perform detailed due diligence, considering factors like market conditions, property location, and long-term appreciation. By applying these principles, real estate investors can make more informed decisions and build profitable rental portfolios.