Rental Property Cash Flow Calculator
Understanding Rental Property Cash Flow
Calculating the cash flow of a rental property is the single most important step in real estate investing. Cash flow represents the net amount of money moving into or out of your business after all expenses have been paid. A positive cash flow indicates a profitable investment that generates passive income, while negative cash flow means the property is costing you money every month to hold.
The Formula for Rental Cash Flow
The basic formula used in this calculator is: Gross Income – (Operating Expenses + Debt Service) = Net Cash Flow.
While Gross Income is straightforward (the rent you collect), Operating Expenses can be tricky. Beginners often overlook "phantom" costs like vacancy rates and CapEx (Capital Expenditures) budgets for future roof or HVAC replacements. This tool specifically accounts for:
- Vacancy Rate: The estimated percentage of time the property sits empty. 5% is a standard industry average, representing about 18 days of vacancy per year.
- Repairs/CapEx: Money you should set aside monthly for maintenance, even if you don't spend it that specific month.
- Fixed Costs: Recurring payments like Taxes, Insurance, and HOA fees.
Real World Example
Imagine you purchase a property that rents for $2,000 per month. Your mortgage is $1,000. It might look like you are making $1,000 profit, but that is incorrect.
If you factor in $300 for taxes/insurance, $150 for repairs, and a 5% vacancy rate ($100), your total expenses are actually $1,550. Your true cash flow is $450 per month. Using a calculator like this ensures you don't overestimate your returns before buying a deal.