Rental Property Operating Expenses: What Landlords Should Include

What Are Rental Property Operating Expenses?

Operating expenses are the recurring costs of running a rental property — the bills you pay to keep the property operating, occupied, and in good condition. They sit between income and profit in a rental analysis, so getting them right is what makes the rest of the math honest.

Five terms anchor the framework:

• Income — rent and any other revenue the property generates.
• Operating expenses — the recurring costs of operating and maintaining the property.
• Net operating income (NOI) — effective gross income minus operating expenses; property performance before financing.
• Debt service — mortgage principal and interest; subtracted from NOI to reach cash flow.
• Cash flow — NOI minus debt service; the cash left after the mortgage is paid.

Analytical conventions can present vacancy either as an income adjustment or as an expense line, but it must not be deducted twice. Pick one convention and apply it consistently.

Common Rental Property Operating Expenses

The categories below cover the recurring costs most rental properties carry. Actual amounts vary significantly by property type, age, condition, location, lease structure, and management strategy — these are categories, not prescribed amounts.

Property taxes

Property taxes are assessed by the local taxing authority on the real estate. They are a fixed recurring cost of ownership and are included in operating expenses for NOI. Landlords need to account for them because they are paid whether the unit is occupied or not. For a more property-specific estimate, verify the current assessment and rate with the county or municipal tax authority, and confirm whether a change in ownership or homestead status will reset the assessed value.

Landlord / property insurance

Landlord insurance (often a DP3 policy) covers the building, liability, and loss of rent for a rental property — distinct from a homeowner policy on an owner-occupied residence. It is an operating expense deducted before NOI. For a property-specific estimate, obtain an actual quote for the specific property from an insurer or agent, since premiums vary with construction type, age, location, coverage limits, and deductible.

Property management fees

Property management covers marketing and tenant placement, rent collection, coordinating maintenance, lease enforcement, and turnover. When you hire a manager, the fee — commonly a percentage of collected rent — is an operating expense. For a property-specific estimate, research management pricing from local property-management companies, since fees vary by market, services included, and property type. See the Management resources for the broader operating picture.

HOA or condominium fees

When the property is in a homeowners or condo association, monthly dues and special assessments are operating expenses. They can materially change a property’s economics — a low-priced condo with high dues may carry a very different expense profile than a comparable single-family home. For a property-specific estimate, review the HOA documents, current dues, reserve study, and any pending assessments before finalizing a budget.

Owner-paid utilities

When the lease makes the landlord responsible for water, sewer, trash, or common-area electricity, those bills are operating expenses. This is common in small multi-unit buildings and in markets where separate metering is not installed. For a property-specific estimate, confirm which utilities the owner actually covers under the lease and request 12 months of actual bills from the seller or utility provider.

Routine repairs and maintenance

Routine maintenance keeps the property in operating condition; repairs fix things that break. Both are operating expenses. Examples include minor plumbing repairs, small electrical repairs, HVAC servicing, touch-up painting, and minor fixture repairs. For a property-specific estimate, base the budget on the property’s actual condition and maintenance history rather than a generic percentage. The Maintenance & Repairs resources cover upkeep planning in more depth.

Landscaping and exterior maintenance

Lawn care, grounds upkeep, and exterior maintenance the owner is responsible for are operating expenses. They may be a recurring contract or per-service. For a property-specific estimate, determine what the lease makes the owner responsible for and price local service providers for the lot size and climate.

Pest control

Recurring preventative pest control is an operating expense. It may be a fixed quarterly contract or a per-treatment cost. For a property-specific estimate, price local pest control providers and decide whether preventative service or reactive treatment fits the property.

Cleaning and common-area expenses

In multi-unit properties, turnover cleaning and shared-area upkeep (hallways, laundry rooms, common entries) are operating expenses where applicable. For a property-specific estimate, price turnover cleaning per unit and any recurring common-area service the property requires.

Administrative and other recurring expenses

Rental licensing or registration fees, property-related accounting and bookkeeping, advertising, legal, and other recurring property-level costs are operating expenses when they apply. For a property-specific estimate, check your jurisdiction’s rental licensing requirements and track the recurring professional and administrative costs attributable to the property.

Fixed vs. Variable Rental Property Expenses

Splitting expenses into fixed and variable helps you see which costs hold steady and which scale with occupancy, rent, or usage. Fixed expenses stay roughly the same regardless of occupancy; variable expenses move with occupancy, rent, or usage.

“Fixed” does not mean the expense can never change — taxes rise at reassessment, insurance adjusts at renewal, and HOA dues can increase. It means the cost does not move with month-to-month occupancy.

Some costs sit on the boundary. Pest control may be a fixed quarterly contract or a variable per-treatment cost; snow removal may be seasonal and fixed or per-event. Classify each line based on how it actually behaves on your property.

Vacancy: Expense or Lost Income?

Vacancy is fundamentally lost potential income rather than a bill paid to a vendor. The rent you do not collect during turnover and the days a unit sits empty are income you expected but did not receive.

Even so, rental underwriting commonly incorporates a vacancy allowance when estimating effective income, because downtime is a recurring reality of operating a rental. The allowance is usually modeled as a percentage of gross scheduled income:

A reasonable vacancy assumption depends on the local rental market, property type, tenant turnover patterns, and your make-ready process. The goal is to reflect realistic downtime, not to assume 100% occupancy forever.

Maintenance vs. Capital Expenditures (CapEx)

Routine maintenance keeps components working; capital expenditures (CapEx) replace components that have reached the end of their useful life. Keeping the two straight matters for both your budget and your accounting.

Routine maintenance is the smaller, recurring upkeep that keeps the property operating — minor plumbing repairs, small electrical repairs, HVAC servicing and filter changes, touch-up repairs, and minor fixture repairs. These are operating expenses.

Capital expenditures are major, longer-life replacements — roof replacement, HVAC replacement, water heater replacement, major appliance replacement, large flooring replacement, and major building-system replacements. In a strict accounting or appraisal NOI calculation, capital expenditures are often treated below the NOI line because they are not recurring operating costs in the same sense as taxes or insurance.

In a practical cash-flow budgeting model, investors often model a maintenance reserve and a CapEx reserve — monthly contributions set aside so that routine upkeep and future replacements are funded in advance rather than financed out of pocket when something fails. These reserves are planning and underwriting tools. A reserve contribution is not necessarily identical to an accounting expense or a tax deduction; where it sits in the NOI definition depends on the convention you are using, but it belongs in any realistic budget either way.

Actual reserve needs depend on the property’s age, condition, component age, climate, property type, maintenance history, and expected replacement schedule. There is no universally correct percentage — estimate based on the specific property rather than applying a generic rule.

This article does not provide tax advice. The treatment of repairs versus improvements for tax purposes has specific rules — consult a qualified tax professional for your situation.

Should Property Management Be Included If You Self-Manage?

Owners who self-manage do not write a management check each month, so there is no out-of-pocket management expense to deduct when tracking actual cash costs. Whether to model a management allowance anyway depends on the purpose of the analysis.

Investors may choose to model a management allowance even when self-managing if they want to evaluate the property’s economics independent of their own labor, or to see what the property could look like under professional management. Charging an allowance to the property can make it easier to compare self-managed and professionally managed properties on equal terms.

This is a planning choice, not something every owner must do. The assumption should reflect the question you are asking: use actual cash costs when tracking real spending, and consider a management allowance when stress-testing the deal’s stand-alone economics.

Are Mortgage Payments an Operating Expense?

No — not for NOI analysis. Mortgage principal and interest represent financing or debt service rather than property operating expenses. NOI measures property operations before financing so properties can be compared on equal terms regardless of how they were purchased.

Mixing mortgage payments into operating expenses makes NOI inconsistent: the same property would show different NOI under different financing, which defeats the purpose of a property-level operating measure. Keep debt service below the NOI line so NOI stays a clean comparison of operating performance, and let cash flow absorb the financing decision separately.

Rental Property Operating Expense Example

The following hypothetical example walks through every line of an operating-expense calculation. The inputs match the example scenario loaded by the Rental Property Expense Calculator so you can reproduce these figures in the tool.

Hypothetical example for educational purposes only.

Assumptions

Step-by-step calculation (monthly)

Vacancy is deducted once, as a reduction to income — it is not also listed as an operating expense, so it is not double-counted. Mortgage payments are not included here at all; they are subtracted from NOI later when calculating cash flow.

Annual figures

How to Estimate Rental Property Expenses Before Buying

Before you commit to a purchase, build an expense estimate from property-specific sources rather than generic rules. Practical research methods include:

• Review actual historical expenses when available — seller rent rolls, operating statements, and tax returns can show what the property actually cost to run.
• Verify property-tax information with the appropriate taxing authority, and confirm whether a sale or change in status will reset the assessed value.
• Obtain an insurance quote for the specific property — do not reuse an owner-occupied policy estimate.
• Review HOA documents and current dues where applicable, including reserve studies and pending assessments.
• Determine which utilities the owner is responsible for and request 12 months of actual bills.
• Evaluate the age and condition of major systems — roof, HVAC, water heater, appliances, plumbing, and electrical.
• Estimate maintenance based on the property’s actual condition rather than blindly applying a generic percentage.
• Review major components — roof, HVAC, water heater, appliances, plumbing — when relevant, and note remaining useful life.
• Investigate property-management pricing if professional management may be used, so the deal works under either model.
• Research local vacancy conditions rather than assuming the property will remain continuously occupied.

No source or estimate will perfectly predict future expenses. The goal is to get property-specific enough that your NOI and cash-flow projections reflect the real property, not a national average.

Common Rental Property Expense Estimating Mistakes

• Calculating profit as rent minus mortgage. This ignores taxes, insurance, maintenance, vacancy, and every other operating cost — the real expense layer.
• Ignoring vacancy. Assuming 100% occupancy hides one of the largest recurring realities of operating a rental.
• Ignoring maintenance. Routine repairs happen every year; budgeting zero guarantees a surprise.
• Confusing maintenance and CapEx. Routine upkeep is an operating expense; a new roof is a capital expenditure. Mixing them distorts both NOI and your replacement planning.
• Forgetting owner-paid utilities. Water, sewer, trash, and common-area electricity the landlord covers are easy to overlook.
• Ignoring HOA costs. Dues and assessments can materially change a property’s economics, especially for condos.
• Ignoring landscaping and pest control where applicable — recurring service costs that add up over a year.
• Using unrealistic insurance estimates. Reusing an owner-occupied policy figure understates the cost of landlord coverage.
• Using old property-tax figures without checking current information — a sale can reset the assessed value.
• Assuming self-management has no economic value. Your labor is real even if it is unpaid; modeling an allowance can reveal whether the property stands on its own.
• Double-counting vacancy. Listing vacancy both as an income reduction and as an operating expense deducts it twice.
• Including debt service in NOI. Mortgage payments are financing costs, subtracted after NOI for cash flow.
• Using generic percentage rules without considering the property’s actual condition, age, and systems.

How Operating Expenses Affect NOI and Cash Flow

Higher operating expenses reduce NOI dollar-for-dollar, because NOI equals effective gross income minus operating expenses. Every dollar of taxes, insurance, management, maintenance, or utilities you add lowers NOI by the same amount.

Financing does not change property-level NOI under the standard NOI framework — NOI is calculated before debt service. Financing does change cash flow, because cash flow is NOI minus debt service. Two owners with different loans on the same property will see the same NOI but different cash flow.

This separation is the whole point of the framework: NOI tells you how the property operates, and cash flow tells you how the property operates after your financing decision. For a dedicated explanation of the operating-income metric itself, read What Is NOI in Real Estate?, and then the full sequence in How to Calculate Rental Property Cash Flow.

From Operating Expenses to a Full Analysis

Operating expenses are one layer of a complete rental-property analysis. Once you have NOI, the next step is subtracting debt service to reach cash flow — and layering in purchase price, financing, and return metrics like cap rate and cash-on-cash return.

Managing more than one property? The Rental Property Financial Tracker organizes income, expenses, and performance across a portfolio. See all the free tools on the Tools & Calculators page, explore the Finances hub, or review Maintenance & Repairs and Management resources.

Frequently Asked Questions