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Rental cash flow calculator

Estimate monthly cash flow, NOI and debt coverage for a rental property, including Canadian semi-annual mortgage compounding.

Income
Operating costs
Financing

How this is calculated

Effective income is rent plus other income, minus your vacancy allowance. Operating costs are taxes, insurance, fees, utilities and the percentage-based allowances for repairs, capital reserves and management. Net operating income (NOI) is effective income minus operating costs. Cash flow is NOI minus your mortgage payment (principal and interest).

The mortgage payment uses the standard amortization formula. With semi-annual compounding (common for Canadian fixed-rate mortgages), the monthly rate is (1 + rate/2)1/6 − 1 rather than rate/12, which gives a slightly lower payment.

Debt service coverage is NOI ÷ mortgage payment. Above 1.0× means the property's income covers the loan.

Estimates for planning only, based on what you enter. Not financial or tax advice. All calculations run in your browser and nothing is stored or sent.

Want to track the real numbers all year? See the US or Canadian bookkeeping spreadsheet.