Return Metrics
Total Monthly Expenses
Two-Input Ratio Expense Metrics Most Popular Risk Assessment Operating Expenses

Operating Expense Ratio

Operating expenses as a percentage of effective gross income.

Example Result

Sample Data
37.38%

Based on a sample $385,000 property with $2,850/month rent, 20% down, 7% interest rate.

See Your Own Properties

With the Rental Property Calculator™, you can run this calculation against your own rental properties using your real numbers.

View Pricing Sign In

Operating Expense Ratio Formula

Total Operating Expenses / Effective Gross Income x 100
$12,146 / $32,490 x 100
37.38%

What This Means

A sample property priced at $385,000 with $2,850/month rent has a operating expense ratio of 37.38%. OER benchmarks your property's operational efficiency against similar properties. Single-family rentals typically run 35-45%, while multifamily runs 40-55%. If your OER is significantly higher than market norms, you may have expense management issues.

Where This Value Comes From

Operating Expense Ratio is not entered directly — it is calculated from Effective Gross Income and Total Operating Expenses. See the formula breakdown above and the detailed inputs below.

Calculated From

Operating Expense Ratio is calculated using these inputs:

Effective Gross Income
Actual expected income after vacancy and other income.
$32,490
Total Operating Expenses
Sum of all property operating costs (taxes, insurance, management, maintenance, CapEx, HOA, utilities)
$12,146

Platform Distribution

Unlock Platform Benchmarks

See the average, median, and where your property ranks among 105 properties on the platform.

Unlock Rental Property Calculator

Why It Matters

OER benchmarks your property's operational efficiency against similar properties. Single-family rentals typically run 35-45%, while multifamily runs 40-55%. If your OER is significantly higher than market norms, you may have expense management issues.

Detailed Explanation

The Operating Expense Ratio (OER) measures how much of your income goes to operating the property. A 40% OER means 40 cents of every dollar of income goes to expenses, leaving 60 cents as NOI.

Example

Sample Result
29.10%

Based on a sample $385,000 property with $2,850/month rent, 20% down, 7% interest rate.

Related Calculations

Total Monthly Expenses

U

All monthly costs including operating expenses and mortgage payment.

$3,061 Example

Total Annual Expenses

U

All annual costs including operating expenses and debt service.

$36,736 Example

Per Unit Operating Cost

2

Annual operating expenses divided by number of units.

$12,146 Example

Operating Cost Per Square Foot

2

Annual operating expenses divided by total square footage.

$8.10 Example

Total Expense Per Unit Per Year

U

Total annual expenses (including debt service) per unit.

$36,736 Example

Management Cost Annual

2

Annual property management cost.

$2,736 Example

Run This Calculation on Your Property

Get instant results for all 166 calculations by entering your property details into the Rental Property Calculator.

View Pricing