Quick guide
How to use this calculator
- Enter property amounts from one consistent currency and period.
- Use the labels to match the calculator's stated income, cost, area, or capacity convention.
- Read the assumptions beside the result before using it in an investment comparison.
Calculation method
Calculation method
Cash flow = rental income + other property income − operating expenses − debt service for the same period.
Entered fixed decimals use exact rational arithmetic. Money rounds only for display; a supported nonzero amount is never replaced by a misleading zero.
Worked example
Worked example
Rent of 3,000 plus 100 other income, less 900 operating expenses and 1,500 debt service, gives cash flow of 700.
Cash flow = rental income + other property income − operating expenses − debt service for the same period.
Supported inputs
Precision and limits
Visible input limits
Amounts accept up to 30 digits and 12 decimal places and are capped at 1e12 per input. Rates are capped at 1000%; signed value-change rates cannot be below −100%.
International scope
No currency, tax regime, tenancy law, lender threshold, local market database, appraisal standard, or jurisdiction-specific fee is assumed.
Decision boundary
The result is an arithmetic scenario based on visitor-entered figures, not an appraisal, forecast, lending decision, legal determination, or investment recommendation.
Calculator-specific assumptions
Every amount must use the same period. Capital expenditure and income tax are excluded unless included intentionally in the entered expense figure.