Rental Income Calculator

Understanding Rental Property Analysis

Rental property analysis helps you determine if a rental investment will generate positive cash flow and provide good returns. Key metrics include cash flow (income minus expenses), cap rate (NOI divided by property value), cash-on-cash return (annual cash flow divided by cash invested), and gross rent multiplier (property price divided by annual rent). Understanding these metrics helps you make informed investment decisions.

Key Rental Property Metrics

These are the essential metrics for analyzing rental properties:

• Monthly Cash Flow: Rental income minus all expenses (mortgage, taxes, insurance, maintenance)
• Net Operating Income (NOI): Annual rental income minus operating expenses (before mortgage)
• Cap Rate: NOI ÷ Property Value × 100 (typical range: 4-10%)
• Cash-on-Cash Return: Annual Cash Flow ÷ Cash Invested × 100
• Gross Rent Multiplier (GRM): Property Price ÷ Annual Rent (lower is better)
• Operating Expense Ratio: Operating Expenses ÷ Gross Income × 100 (lower is better)

Common Operating Expenses

Don't forget to account for these operating expenses:

• Property taxes: Typically 1-2% of property value annually
• Insurance: Landlord insurance, typically $500-2,000/year
• Maintenance: Budget 5-10% of rent for repairs and maintenance
• Property management: 8-10% of rent if using a property manager
• HOA fees: Monthly fees for condos or planned communities
• Utilities: If landlord pays (water, sewer, trash, etc.)
• Vacancy allowance: Budget 5-10% for vacancy between tenants
• Capital expenditures: Long-term replacements (roof, HVAC, etc.)

Rules of Thumb for Rental Properties

Experienced investors use these rules to quickly evaluate properties:

• 1% Rule: Monthly rent should be at least 1% of purchase price
• 2% Rule: Ideal properties generate 2% of purchase price in monthly rent
• 50% Rule: Operating expenses typically equal 50% of gross rent
• Cap Rate Target: Aim for cap rates of 8%+ for good cash flow
• Cash-on-Cash Target: Aim for 8-12% cash-on-cash return
• GRM Target: Lower GRM (under 10) indicates better value

Using This Calculator

Follow these steps to analyze a rental property:

• Step 1: Enter purchase price and down payment details
• Step 2: Enter loan terms (interest rate and term)
• Step 3: Enter expected monthly rent and vacancy rate
• Step 4: Add all operating expenses (taxes, insurance, maintenance, etc.)
• Step 5: Review cash flow, ROI, cap rate, and other metrics
• Step 6: Compare with investment targets to evaluate the property