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Rental Property Calculators

Property Expense Calculator

Total rental operating expenses and the operating expense ratio (OER) against effective gross income.

Enter values

Taxes, insurance, maintenance, management, utilities…

Results update as you type.

Result

Operating expense ratio

30.86%

Total operating expenses
$17,900.00
NOI
$40,100.00

About the Property Expense Calculator

Total rental operating expenses and the operating expense ratio (OER) against effective gross income.

Also known as: operating expense ratio, rental expenses, oer calculator, property-expense.

How to use this calculator

  1. Enter effective gross income (annual), annual expenses.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

OER = operating expenses ÷ effective gross income

Worked example

Using the values pre-filled in the calculator above:

  • Effective gross income (annual) = 58,000
  • Annual expenses: 4200, 3600, 2800, 5800, 1500

the calculator returns:

  • Operating expense ratio: 30.86%
  • Total operating expenses: 17,900
  • NOI: 40,100