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How to use
- Enter Potential gross rent.
- Enter Vacancy rate %.
- Calculate, then verify input definitions before comparing properties or periods.
How it is calculated
Vacancy loss = potential rent × vacancy rate ÷ 100
Example
Potential rent of 120,000 at 8% vacancy means 9,600 vacancy loss and 110,400 rent after vacancy.
Important notes
This is an expected value based on an assumed rate. Use representative historical vacancy when available rather than an arbitrary assumption.
Worked examples and interpreting results
| Case | Calculation | Result |
|---|---|---|
| Vacancy loss | 120000 × 8 ÷ 100 | 9,600 |
| Rent after vacancy | 120000 − 9600 | 110,400 |
Frequently asked questions
Should bad-debt loss be added to vacancy?
If it is distinct from vacancy, model it separately to avoid mixing different sources of lost revenue.
Should inputs cover the same period?
Yes. When comparing income, expense, balance or price figures, keep the period and definitions consistent.
Is the result a final property valuation?
No. The calculator gives a numerical relationship only; real decisions also depend on location, market conditions, taxes, financing and risk.