About the Rental Income Calculator
Effective rental income after vacancy, plus annual gross income from rent and other fees for one or more units.
Also known as: rental income, gross rental income, rent roll.
How to use this calculator
- Enter units, monthly rent per unit, other monthly income (parking, laundry), vacancy rate.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
Effective income = gross × (1 − vacancy)
Worked example
Using the values pre-filled in the calculator above:
- Units = 4
- Monthly rent per unit = 1,250
- Other monthly income (parking, laundry) = 150
- Vacancy rate = 5 %
the calculator returns:
- Effective annual income: 58,710
- Gross potential income: 61,800
- Vacancy loss: 3,090
- Monthly effective income: 4,892.5