Operating expenses are the ongoing costs of keeping a rental running: property management, insurance, property taxes, routine maintenance and repairs, utilities you pay, and similar recurring items. By convention they exclude your mortgage (debt service), depreciation, and capital improvements, which are treated separately.
Operating expenses are what you subtract from collected rent to reach net operating income, so how you classify a cost matters. A repair is an operating expense deducted now; a major improvement is capital spending recovered over time. Tracking operating expenses by category all year is what makes both your NOI and your tax return come straight from the books.
Related tools & guides
Editorial ownership
Written and maintained by the Aptoria editorial team
Editorial method reviewed July 28, 2026. Aptoria reviews scope, source fit, examples, limitations, links, and publication gates. This record does not claim attorney, CPA, lender, appraiser, or other independent professional sign-off.
Professional review is not claimed. Verify current law, tax treatment, loan terms, valuation inputs, and property-specific facts with the appropriate qualified professional before acting.
Related terms
Investing metrics
Net operating income (NOI)
Net operating income is effective property income minus normalized property operating expenses, before debt service and owner-level income taxes.
Accounting & tax
Chart of accounts
The organized list of income, expense, asset, and liability categories a landlord's books are built on.
From definition to done
Aptoria runs the routine work behind these terms — rent, books, and screening — inside limits you set. Free for your first unit.
Start free