Rental Property Calculator

Evaluating a rental property requires analyzing both the income potential and the total costs of ownership. Start by estimating the gross rental income based on comparable properties in the area, then subtract all operating expenses including property taxes, insurance, maintenance, and property management fees. The resulting net operating income (NOI) is the foundation for most investment metrics. A thorough evaluation also considers the local rental market demand, vacancy rates, and the property's condition to avoid costly surprises after purchase.

Cap rate (capitalization rate) is calculated by dividing the net operating income by the property's purchase price, giving you a quick snapshot of the property's yield independent of financing. A higher cap rate generally indicates higher potential returns but also higher risk. Cash-on-cash return measures your actual cash income against the cash you invested, making it especially useful for leveraged purchases where you use a mortgage. Most experienced investors in the U.S. look for cash-on-cash returns of 8% to 12%, though this varies widely by market and property type.

Many first-time investors underestimate the true costs of rental property ownership beyond the mortgage payment. Maintenance and repairs typically run 1% to 2% of the property value per year, and major capital expenditures like a new roof or HVAC system can cost $5,000 to $15,000 or more. Vacancy periods between tenants mean lost income, and the average vacancy rate in the U.S. hovers around 6% to 7%. Other commonly overlooked expenses include landlord insurance premiums, legal fees for evictions, accounting costs, and potential HOA dues.

Successful landlording starts with thorough tenant screening — always run credit checks, verify employment, and contact previous landlords before signing a lease. Setting aside a dedicated reserve fund of at least three to six months of expenses protects you from unexpected repairs or extended vacancies. Familiarize yourself with your state's landlord-tenant laws, as regulations around security deposits, eviction procedures, and habitability requirements vary significantly across the U.S. Consider hiring a property management company (typically 8% to 10% of monthly rent) if you don't have the time or desire to handle day-to-day tenant issues yourself.