Vacancy Loss Calculator
Estimate the annual rental income lost due to vacancy periods based on your property's rent and vacancy rate.
Formulas Used
Gross Annual Rent = Monthly Rent × 12 × Number of Units
Annual Vacancy Loss = Gross Annual Rent × (Vacancy Rate ÷ 100)
Effective Gross Income (EGI) = Gross Annual Rent − Annual Vacancy Loss
Vacant Days per Unit per Year = 365 × (Vacancy Rate ÷ 100)
Assumptions & References
- Rent is assumed constant throughout the year with no mid-year adjustments.
- Vacancy rate represents the percentage of time a unit is unoccupied and generating no income.
- The national average vacancy rate for residential rentals is approximately 6–8% (U.S. Census Bureau, 2023).
- Commercial properties typically carry higher vacancy rates (10–15%) depending on market conditions.
- Effective Gross Income (EGI) is a standard metric used in real estate underwriting (Appraisal Institute).
- This calculator does not account for credit loss, concessions, or other income adjustments.
- All monetary values are in USD; results should be adjusted for local market conditions.