Most landlords know their monthly rent amount. Few know their actual cash flow. The difference between these two numbers often shocks property owners when they finally do the math. Professional property management exists partly because cash flow calculation requires precision that many landlords never develop on their own.
Start with Gross Rental Income and Subtract Operating Expenses
True cash flow begins with gross rental income, then systematically removes every expense tied to running the property. Many landlords stop too early in this process.
Start by writing down your annual rent. If a unit rents for $1,500 per month, that is $18,000 per year. Now subtract the expenses that actually leave your pocket: property taxes, insurance, maintenance and repairs, utilities you cover, lawn care, pest control, and any property management fees. These are operating expenses, and they happen whether your tenant pays on time or not.
Vacancy and turnover costs matter more than most owners admit. If your property sits empty for two months between tenants, you lose that rental income forever. Factor in cleaning, minor repairs, and leasing time when calculating your vacancy rate. A free rental analysis can help you understand what realistic vacancy looks like for your specific property.
About the Author: Billy Borrouso is a licensed real estate broker, Certified Residential Specialist (CRS), and licensed contractor with over 20 years of experience in the Greater New Orleans area. As the founder of Redfish Property Management, Billy brings a rare combination of real estate expertise and construction knowledge to landlords and tenants across Metairie, New Orleans, and the Northshore. He is a NOMAR Gold Award recipient and is committed to making property ownership stress-free for landlords while maintaining quality homes for tenants.
Account for Capital Expenditures and Reserves
Capital expenditures are large, infrequent costs that don’t happen every month but will happen over time. Your roof will need replacement. The HVAC system will fail. Paint will peel. Appliances will break.
Successful landlords set aside money each month for these costs instead of scrambling when they arrive. A common rule is to reserve 10 percent of gross rental income annually, though older properties may need more. This reserve protects you from dipping into personal funds or taking on debt when major repairs emerge.
Calculate Your Net Operating Income
After subtracting all operating expenses and reserves from gross rental income, you arrive at your net operating income. Net operating income is your true cash flow before debt service.
If your property generates $18,000 in annual rent, and your operating expenses total $8,000 while your reserve fund takes another $1,800, your net operating income is $8,200. That figure sounds better than gross rent, but a mortgage payment consuming most or all of it still may not justify ownership.
Consider your mortgage payment, property taxes, insurance, and all maintenance as one complete package. Many investors use the National Association of Realtors guidelines to benchmark whether a property makes financial sense. When expenses consistently exceed income, the property may be a poor investment regardless of long-term appreciation potential.
Have questions about property management services across greater New Orleans, Louisiana? Reach out to us today and we’ll be happy to help you every step of the way.