Real Estate & Mortgage
Operating Expense Ratio (OER)
Calculate the share of a rental property's income consumed by operating expenses.
Your inputs
Change any value to update the result instantly.
Operating expense ratio
34.6154%
Operating expenses
45,000
Effective gross income
1,30,000
Implied NOI
85,000
Formula and working
OER = Operating Expenses ÷ Effective Gross Income
- 1
Collect the inputs
Annual operating expenses = 45,000; Annual effective gross income = 130,000
- 2
Apply the formula
OER = Operating Expenses ÷ Effective Gross Income
- 3
Result
Operating expense ratio = 34.6154 %
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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