What the calculator measures
Gross rental yield divides potential annual rent by purchase price. Net operating yield first adjusts rent for vacancy and deducts property taxes, insurance, service charges, maintenance, management and other operating expenses. It then compares net operating income with total acquisition and renovation cost.
Mortgage payments are kept separate. This lets you distinguish the economics of the property from the effect of leverage. Pre-tax cash flow equals net operating income minus annual debt service; cash-on-cash return divides that cash flow by your initial cash investment.
Why taxes are not automated
This page serves English-speaking users in several jurisdictions. Transfer taxes, property taxes, income-tax deductions and mortgage rules differ across countries, states and provinces. A single automatic tax percentage would be misleading. Enter the acquisition and recurring costs that apply to the property and treat all results as pre-income-tax estimates.
Run at least three scenarios
- Base: documented rent, financing and property costs.
- Conservative: more vacancy, maintenance and a higher borrowing rate.
- Stress: missed rent plus a major repair entered under other annual costs.
Important limitations
- No forecast of house prices, rent growth or resale value.
- No income tax, capital-gains tax or selling costs.
- No variable-rate path, refinancing or early repayment model.
- No guarantee of occupancy, payment, liquidity or investment return.
Use local official sources and qualified legal, tax and property professionals before making a material decision.