Cash Flow Roi

What expenses should be included in ROI calculations?

Oklahoma rental guidance and tenant-landlord operational information.
Published March 14, 2026 State-specific rental guidance Update This Question
Reviewed by Tenants & Landlords Editorial Team

This rental guidance was reviewed by the Tenants & Landlords Intelligence Team, specializing in lease agreements, notices, rent disputes, deposits, evictions, and tenant-landlord operational procedures.

Asked 80 days ago · Oklahoma

Key Expenses to Include in ROI Calculations for Oklahoma Rental Property Investors

When investing in rental properties in Oklahoma, accurately calculating your Return on Investment (ROI) is essential to ensure your portfolio’s profitability and long-term success. ROI measures the efficiency of your investment by comparing the net income generated by the property against your total investment costs. To obtain a realistic picture of ROI, you must include all relevant expenses specific to operating rental properties in Oklahoma.

This guide breaks down the critical expense categories Oklahoma rental investors should consider when calculating ROI to make informed decisions.

1. Mortgage Payments

If you financed your Oklahoma rental property, mortgage payments constitute a primary recurring expense. These payments include:

  • Principal and Interest: Loan repayment amounts including both principal reduction and interest charges.
  • Mortgage Insurance: If required by your lender when your down payment is less than 20%.
Be sure to use the actual monthly mortgage payment as this impacts your monthly cash flow and ROI.

2. Property Taxes

Property taxes in Oklahoma vary by county and city, reflecting local assessment rates and mill levies. It’s critical to include the full annual property tax bill when calculating expenses.

  • Oklahoma property taxes are generally more affordable compared to some states, but they can fluctuate depending on the county.
  • Verify the exact tax amount with your county assessor’s office or through your escrow statements.
Include the prorated property tax portion that corresponds to the time you own the property during the calculation period.

3. Insurance Costs

Oklahoma’s climate, including tornado risks and occasional severe weather, influences property insurance premiums. Insurance is a mandatory and vital expense that protects your investment.

  • Landlord Insurance Policy: This differs from homeowner’s insurance; it typically covers property damage, liability, and loss of rental income.
  • Consider additional coverage for flooding or windstorm damage if the property is in a risk-prone area.
Premiums vary based on location, property value, and coverage limits, so account for your actual insurance costs in ROI.

4. Property Management Fees

Many Oklahoma investors choose property management companies to handle day-to-day operations, tenant screening, and maintenance.

  • Property managers usually charge between 8% to 12% of the monthly rent.
  • Even if you self-manage, allocate an estimated value for your time spent managing the property.
Property management fees are ongoing expenses that should be deducted when calculating net operating income and ROI.

5. Maintenance and Repairs

Maintenance is a significant expense for Oklahoma landlords due to the state’s diverse weather conditions, which can cause wear and tear on roofs, HVAC systems, and exteriors.

  • Plan for routine maintenance such as HVAC servicing, lawn care, pest control, and seasonal upkeep.
  • Budget for unexpected repairs like plumbing issues, roof leaks, or appliance replacements.
  • A common rule is to set aside 1% to 3% of the property value annually for maintenance.
Tracking maintenance costs accurately ensures you don’t overestimate profitability.

6. Vacancy and Turnover Costs

Vacancies reduce rental income, and turnovers incur additional expenses.

  • Vacancy Allowance: Set aside a percentage of expected rent (typically 5% to 10%) to cover periods when the property is unoccupied.
  • Turnover Costs: Include cleaning, repainting, minor repairs, advertising, and tenant screening costs between leases.
Oklahoma investors should analyze local rental market stability and seasonality trends to estimate vacancy rates realistically.

7. Utilities

In Oklahoma, some landlords include utilities such as water, sewer, and trash in rent, while others require tenants to pay these directly.

  • Determine which utilities you cover and include their costs in your ROI calculations.
  • Common landlord-paid utilities can include water, sewer, trash, and occasionally gas or electricity.
Make sure to review actual bills for accurate expense estimation.

8. HOA Fees

If your Oklahoma rental property is part of a homeowners association, monthly HOA fees must be included in expenses.

  • HOA fees vary widely depending on the community amenities and services.
  • Verify whether the fees cover services that reduce your costs elsewhere, like lawn maintenance or insurance.
Include HOA fees as a regular monthly expense in your ROI analysis.

9. Legal and Accounting Costs

Operating a rental property in Oklahoma occasionally requires legal or professional advice.

  • Expenses may include costs associated with lease drafting, eviction processing, and legal consultations.
  • Accountants or tax preparers may charge fees for managing rental income tax filings.
Even if these costs are infrequent, allocating a small budget annually helps capture all ownership costs.

10. Capital Expenditures (CapEx)

CapEx represents significant property improvements or replacements with a long lifespan.

  • These can include roof replacement, HVAC system upgrades, or major remodeling.
  • Unlike maintenance, CapEx is not a monthly expense but should be amortized over the asset’s useful life and included in ROI calculations.
For Oklahoma properties, budgeting for CapEx protects against major unplanned costs that diminish returns.

Putting It All Together: Calculating ROI

A typical cash flow-based ROI formula for Oklahoma rental properties would be:

ROI = (Annual Net Operating Income – Annual Debt Service) ÷ Total Cash Invested

Where:

  • Net Operating Income (NOI) = Gross Rental Income – Operating Expenses (property taxes, insurance, management fees, utilities, routine maintenance, vacancy allowance, HOA fees, legal/accounting fees)
  • Annual Debt Service = Total mortgage principal and interest payments over one year
  • Total Cash Invested = Down payment + closing costs + initial repairs or improvements + other acquisition fees

Final Considerations for Oklahoma Investors

  • Always verify expenses with local sources such as county tax offices, insurance providers, and property management companies in Oklahoma.
  • Monitor your actual operating expenses diligently to refine future ROI estimates.
  • Understanding these Oklahoma-specific cost factors helps avoid surprises and properly evaluates the profitability of your rental investments.
By thoroughly including these expense categories, Oklahoma rental investors can confidently assess their ROI and plan for sustainable cash flow growth.

Ask a Rental Question