Rental Property Investment Calculator
Rental Property Calculator
Purchase Details
Recurring Operating Expenses
Annual Amounts
Annual Increases (%)
Rental Income
Sale Assumptions
Purchase Summary
Cash Flow Analysis
Investment Metrics
Long-term Returns
This property may not meet typical investment criteria. Review your assumptions and market analysis.
20-Year Cash Flow Projection
Annual Cash Flow Analysis
Cash Flow & Property Value Over Time
A rental property calculator gives you a complete financial picture of a potential or existing rental property. Enter the purchase price, financing details, expected rent, and operating expenses to see monthly cash flow, annual return, cap rate, and long-term wealth accumulation. This is the math every landlord needs before making an offer. Understanding all four pillars of rental return — cash flow, appreciation, principal paydown, and tax benefits — is essential for evaluating real estate investments correctly.
Rental Property Cash Flow Analysis
Cash flow is what remains after all expenses including the mortgage payment. Positive cash flow means the property pays you monthly. Negative cash flow means you subsidize the property from other income, betting on appreciation to make up the difference. Neither is automatically good or bad — the right choice depends on your market, goals, and financial situation.
Monthly Cash Flow = Gross Rent - Vacancy Loss - Operating Expenses - Mortgage Payment Operating Expenses typically include: Property Tax + Insurance + Maintenance + Management + Utilities + HOA NOI (Net Operating Income) = Gross Rent - Vacancy - Operating Expenses (NOI excludes mortgage payment — used for cap rate) Cap Rate = NOI / Property Value × 100%
Budget operating expenses at 35-50% of gross rent as a conservative estimate. The 50% rule: half of gross rent goes to expenses (excluding mortgage). If rent is $1,500/month, budget $750 for all non-mortgage costs.
Total Return vs Cash Flow
Many investors make the mistake of evaluating rental properties based only on cash flow. The full picture includes four return sources, and in some markets, appreciation and tax benefits dominate cash flow by a wide margin.
| Return Component | What It Is | Typical Annual Contribution |
|---|---|---|
| Cash Flow | Monthly income after all expenses including mortgage | Varies widely: −2% to +8% of investment |
| Principal Paydown | Equity built as tenant reduces your mortgage balance | ~1-2% of property value annually (accelerates over time) |
| Appreciation | Increase in property value over time | US average ~3-4%/yr historically; location-dependent |
| Tax Benefits | Depreciation and expense deductions reducing taxable income | 0.5-2% equivalent return depending on tax bracket |
Key Rental Property Metrics
Professional real estate investors use several standardized metrics to evaluate and compare properties. Using these allows you to quickly screen deals and avoid over-paying.
| Metric | Formula | Typical Target | What It Tells You |
|---|---|---|---|
| Cap Rate | NOI / Purchase Price | 5-10%+ | Return if you paid all cash; ignores financing |
| Cash-on-Cash Return | Annual Cash Flow / Cash Invested | 6-10%+ | Cash return on your actual down payment |
| Gross Rent Multiplier | Price / Annual Gross Rent | 8-12× | Quick price check; lower is better |
| 1% Rule | Monthly Rent / Purchase Price ≥ 1% | Monthly rent ≥ 1% of price | Rough screen — $200k property → $2,000/mo rent |
| Debt Service Coverage | NOI / Annual Debt Service | >1.25 | Lender's check: NOI covers mortgage 25%+ |
Estimating Operating Expenses
Operating expenses are the category most commonly underestimated by first-time investors. Budgeting too low means a property that looks profitable turns out to be a money pit.
| Expense | Typical Monthly Cost | Budget Method |
|---|---|---|
| Property taxes | $100-500+ | Check county assessor; often 1-2% of value/yr |
| Insurance (landlord policy) | $80-200 | Get quote; ~1-1.5× homeowner premium |
| Property management | $100-200 | 8-12% of monthly rent if using PM |
| Maintenance & repairs | $100-200 | 1% of property value/yr ÷ 12 |
| Capital expenditure reserve | $100-200 | Roof, HVAC, water heater — save $100-200/mo |
| Vacancy allowance | $75-150 | 5-10% of gross rent monthly equivalent |
Frequently Asked Questions
How much should I budget for repairs on a rental property?⌄
A common rule of thumb is 1% of property value per year for maintenance and repairs — not capital expenditures. For a $200,000 property, budget $2,000/year (about $167/month) for routine maintenance. Additionally, maintain a separate capital expenditure reserve for eventual large replacements: roofs ($8,000-20,000), HVAC ($5,000-12,000), water heaters ($800-2,000), appliances. Older properties, properties in harsh climates, and those with older mechanical systems will need more. Budget $150-250/month combined for both maintenance and CapEx on a typical single-family rental.
Should I use a property manager or self-manage?⌄
Property managers typically charge 8-12% of monthly rent plus a leasing fee (50-100% of one month's rent when finding a new tenant). For a $1,500/month rental, that is $120-180/month plus $750-1,500 at each tenancy turnover. For properties near where you live, if you have time and are handy, self-managing can save $200-300+/month. However, a good property manager handles tenant screening, maintenance coordination, legal compliance, rent collection, and vacancy management more efficiently. Out-of-state investors and those with multiple properties almost always benefit from professional management.
How does depreciation help with taxes on rental income?⌄
Residential rental properties are depreciated over 27.5 years. Dividing the building value (not land value — typically 70-80% of purchase price) by 27.5 gives your annual depreciation deduction. On a $250,000 property with $200,000 in building value: $200,000 / 27.5 = $7,273/year deduction. This offsets rental income without using real cash — it is a "paper loss." Active real estate investors with income under $100,000 can deduct up to $25,000 of rental losses against other income annually (subject to passive activity loss rules). Consult a tax professional to optimize your depreciation strategy.
What is a good cash-on-cash return for rental property?⌄
Most investors target 6-10%+ cash-on-cash return on their down payment. In high-cost coastal markets (NYC, LA, Seattle), cash-on-cash returns of 2-4% are common because appreciation potential is priced in. In Midwest and Sun Belt markets, 8-12% or higher is achievable. The right benchmark depends on your alternatives: if you can get 5% risk-free in a savings account, a 6% cash-on-cash return from a rental with landlord responsibilities may not be attractive. Always evaluate total return (cash flow + principal paydown + appreciation + tax benefits) for a complete picture.
What is the difference between cap rate and cash-on-cash return?⌄
Cap rate = NOI / purchase price — it measures the property's income yield as if you paid all cash with no mortgage. It ignores financing and is used to compare properties regardless of how they are financed. Cash-on-cash return = annual cash flow / cash invested (your down payment + closing costs) — it measures your actual return on the money you put in, including the leverage effect of financing. A property with 6% cap rate financed at 70% LTV might have a 9-12% cash-on-cash return if the mortgage rate is below the cap rate (positive leverage). When mortgage rates exceed the cap rate (negative leverage), financing hurts returns.