Rental Property Cash Flow Calculator
Purchase Information
Rental Income
Monthly Expenses
Analysis Results
Monthly Mortgage (P&I):
$0.00
Total Monthly Expenses:
$0.00
Net Operating Income (NOI) / Mo:
$0.00
Monthly Cash Flow:
$0.00
Annual Cash Flow:
$0.00
Total Cash Invested:
$0.00
Cash on Cash Return:
0.00%
What is a Rental Property Cash Flow Calculator?
Successful real estate investing hinges on one primary metric: positive cash flow. This Rental Property Cash Flow Calculator is designed specifically for investors to analyze the profitability of a potential real estate purchase. Unlike a standard mortgage calculator, this tool accounts for vacancy rates, maintenance costs, property management fees, and HOA dues to give you a realistic picture of your monthly Net Operating Income (NOI).
Whether you are looking at a single-family home, a duplex, or a condo, understanding your numbers before you make an offer is critical to ensuring your asset is not a liability.
How to Calculate Cash Flow on a Rental Property
Calculating cash flow involves subtracting all expenses from your total income. Here is the step-by-step logic used in this calculator:
1. Determine Effective Gross Income
Your gross income is the monthly rent. However, you must account for vacancy (periods where the property sits empty).
Formula: Monthly Rent – (Monthly Rent × Vacancy Rate)
2. Calculate Total Monthly Expenses
Expenses fall into two categories: fixed and variable.
- Mortgage P&I: Principal and interest payments based on your loan term and interest rate.
- Taxes & Insurance: Annual costs divided by 12.
- Maintenance & CapEx: Money set aside for repairs (e.g., roof, water heater).
- Management Fees: If you hire a property manager (usually 8-10% of rent).
3. Determine Cash Flow
Finally, subtract your Total Monthly Expenses from your Effective Gross Income. A positive number means the property pays for itself and generates profit. A negative number indicates a monthly loss.
Pro Tip: Many investors use the "Cash on Cash Return" metric to compare real estate against other investments like stocks. This is calculated by dividing your Annual Cash Flow by the Total Cash Invested (Down Payment + Closing Costs).
Interpreting Your Results
Cash Flow: Aim for at least $100-$200 per door per month for single-family homes, though this varies by market.
Cash on Cash Return (CoC): A return of 8-12% is generally considered good in the stock market. In real estate, investors often aim for 10% or higher, although appreciation and tax benefits can make lower cash flow deals worthwhile.
Use this calculator to adjust your "offer price" until the numbers make sense for your investment goals.