A landlord expenses calculator shows your true annual carrying costs and whether a rental property generates positive cash flow after all expenses — not just the obvious ones.
Rental Property Inputs
How to Calculate Landlord Expenses Accurately
Many landlords underestimate carrying costs by forgetting maintenance reserves and vacancy allowances. This landlord expenses calculator ensures you account for every real cost before buying or analyzing a rental property.
The 50% Rule
As a quick check: operating expenses (excluding mortgage) should be roughly 50% of gross rent. On $2,400/month rent, budget $1,200/month for taxes, insurance, maintenance, vacancy, and management. If your numbers come out much lower, you are likely missing something.
Maintenance Reserve
Budget 1% of property value annually for routine maintenance and repairs. On a $300,000 property, that is $3,000/year or $250/month. This covers HVAC service, plumbing fixes, appliance repairs, and cosmetic updates between tenants.
Vacancy Allowance
Most rental markets have 5-10% vacancy rates. Even if you have a great tenant, plan for turnover every few years. A 8% vacancy rate equals roughly one month vacant per year. Skipping this makes your numbers look better than reality.
Cap Rate vs Cash Flow
Cap rate (NOI / property value) measures the property's return independent of financing — useful for comparing deals. Cash flow measures what you actually put in your pocket after the mortgage. Both matter. A low cap rate can still generate positive cash flow with the right financing.
FAQ
Is this landlord expenses calculator free?
Yes, completely free with no signup required. All calculations run locally in your browser and no data is shared.
What expenses should landlords budget for?
Key expenses include mortgage payments, property taxes, insurance, maintenance (typically 1% of value annually), vacancy allowance (5-10% of gross rent), property management fees (8-12%), capital expenditures reserve (1-2% of value), and utilities if included. Skipping any of these leads to inaccurate cash flow projections.
What is net operating income (NOI)?
NOI is gross rental income minus all operating expenses, excluding mortgage payments. It represents the property's earnings before financing costs. Lenders use NOI to qualify investors for loans, and it is the numerator in the cap rate formula.
What is a good cap rate for a rental property?
Cap rates vary significantly by market. In high-cost cities (NYC, SF), cap rates of 3-5% are common. In mid-tier markets, 5-8% is typical. In smaller or higher-risk markets, 8-12% may be available. A higher cap rate means higher returns but typically higher risk.
What is the 50% rule for rental properties?
The 50% rule is a quick estimate that says operating expenses will be roughly 50% of gross rental income, excluding mortgage payments. This includes taxes, insurance, maintenance, vacancies, and management. While rough, it is useful for quickly screening deals.
What is cash-on-cash return?
Cash-on-cash return measures annual pre-tax cash flow divided by total cash invested (down payment + closing costs + repairs). A 6-10% cash-on-cash return is considered good for most markets. It differs from cap rate because it accounts for financing.