Use our simple template to run the numbers on any rental property. We'll show you what to look for and what numbers really matter.
Every great real estate investor uses a consistent method to evaluate deals. This template walks you through the key numbers: income, expenses, cash flow, and returns. Once you master it, you can analyze any property in 15 minutes.
Gross rental income – include rent, laundry, storage, parking. Use market rents, not seller's claims.
Subtract a vacancy allowance (5–10% of gross income). This cushions against lost rent.
Property taxes, insurance, maintenance (1% of value/year), property management (8–10%), utilities, HOA, reserves.
Gross income – vacancy – operating expenses. This is the property's profit before debt service.
Subtract mortgage payment from NOI to get monthly cash flow. Then calculate cap rate (NOI/price) and cash‑on‑cash ROI (annual cash flow / down payment).
1% Rule: Monthly rent should be at least 1% of purchase price. Quick screen, not a guarantee.
50% Rule: Operating expenses (excluding mortgage) will be about 50% of gross income. Helps estimate cash flow quickly.
Example: $200,000 property, $2,000/month rent → passes 1% rule. Expenses ~$1,000/month (50% rule), mortgage ~$900 → cash flow $100/month. Use the template below for precise numbers.
Fill in the numbers below to calculate NOI, cap rate, cash flow, and ROI.
Adjust the values and click the button.
This template uses standard formulas. Adjust percentages to match your market. Always verify numbers with actual data and consult a professional.