Calculator

Vacancy rate calculator

Calculate vacancy rate across a portfolio.

The short answer

3 vacant units of 50 is a 6% vacancy rate and $4,500 of vacancy loss a month.

Vacancy rate and vacancy loss

Vacancy rate = vacant units ÷ total units. Vacancy loss = gross potential rent × vacancy rate

Vacancy rate
6%
Occupancy rate
94%
Monthly vacancy loss
$4,500.00
Annual vacancy loss
$54,000.00
Show the arithmetic
  • Vacancy rate: 3 ÷ 50 = 6%
  • Monthly vacancy loss: 75000 × 6% = 4500
Worked example

3 vacant units of 50 is a 6% vacancy rate and $4,500 of vacancy loss a month.

Assumptions
  • A point-in-time unit count, not a time-weighted average — a unit empty for one day counts the same as one empty all month.
  • Gross potential rent is what the whole property would collect at full occupancy.

Every figure is calculated from the values you entered. Nothing is fetched from market data, and this is general information rather than financial, legal or tax advice.

Formula

Vacancy rate = vacant units ÷ total units. Vacancy loss = gross potential rent × vacancy rate

What you need

  • Total units
  • Vacant units
  • Monthly gross potential rent

Worked example

3 vacant units of 50 is a 6% vacancy rate and $4,500 of vacancy loss a month.

Assumptions and units

  • A point-in-time unit count, not a time-weighted average — a unit empty for one day counts the same as one empty all month.
  • Gross potential rent is what the whole property would collect at full occupancy.

Limitations

Every figure is calculated from the values you enter — nothing is estimated from market data. Real outcomes depend on your state, your lease terms and your property. This is general information, not financial, legal or tax advice.

Related resources

Keep exploring

Run this workflow in Ayillo

$49/month includes 5 units, then per-unit pricing that drops as you grow. Optional modules are billed separately and must be added deliberately.

Keep these numbers in Ayillo

30 days free. A card in your own name is required to start — we place a refundable $1 authorization to confirm it, and release it right away. Cancel any month.