Rental Property Cash Flow and ROI Calculator
Estimate NOI, debt service, cash flow, cap rate, cash-on-cash return, DSCR, and first-year ROI.
Official sources and scope
Rules and source methodology reviewed September 15, 2026.
IRS Publication 527, Residential Rental Property · CFPB debt-service coverage ratio
Rental operating and financing results
Effective gross income reduces scheduled rent and other income by the entered vacancy assumption. Net operating income subtracts recurring operating expenses but not mortgage payments, depreciation, income tax, or capital expenditures. Cash flow then subtracts annual debt service. Cap rate is NOI divided by price, cash-on-cash return is cash flow divided by initial cash invested, and DSCR is NOI divided by debt service.
The broader first-year ROI scenario also adds scheduled principal paydown and entered appreciation. Appreciation is uncertain and principal paydown is equity rather than spendable cash. Model repairs, turnover, utilities, management, reserves, licensing, insurance, taxes, and association costs carefully.