Rental Property ROI Calculator
Analyze a rental property investment with full ROI projections. Factor in purchase costs, mortgage, rental income, expenses, appreciation, and tax benefits to see your cash-on-cash return, total ROI, and projected equity over time.
Rental property returns come from four distinct sources: cash flow (rent minus expenses minus debt service), principal paydown (each mortgage payment builds equity), appreciation (the property generally rises in value over time), and tax benefits (depreciation deductions, deductible expenses). A successful rental investment usually wins on at least two of the four; great ones win on all four simultaneously.
The math is more involved than for stocks. You're modeling a leveraged purchase (typically 75–80% financed with a mortgage), an income stream with vacancy and operating expense drag, a long-term capital appreciation assumption, and tax treatment that differs from any other asset class. Cash-on-cash return — annual pre-tax cash flow divided by total cash invested — is the standard "how am I doing this year?" metric. Total ROI — cash flow plus principal paydown plus appreciation, all divided by cash invested — is the bigger-picture annualized measure.
This calculator combines all four return components into a multi-year projection. Enter the purchase, financing, income, expense, appreciation, and hold-period assumptions, and it returns cash-on-cash return, projected equity, and the total annualized return. Use it to evaluate prospective deals, to test how sensitive a deal is to assumptions (especially rent and vacancy), and to compare across markets and property types. Real rental returns vary widely with market, financing terms, property condition, and management quality — treat the output as a structured estimate, not a guarantee.
Inputs
Tax, insurance, maintenance, management
Results
Monthly Cash Flow
$-7
Cash-on-Cash Return
-0.1%
Total ROI
152.1%
End Property Value
$403,175
Equity Growth Over Time
Monthly Cash Flow Breakdown
Year-by-Year Breakdown
| Year | Cash Flow | Property Value | Equity | Total ROI |
|---|---|---|---|---|
| 1 | $-83.17 | $309,000.00 | $86,285.57 | 3.86% |
| 2 | $-83.17 | $318,270.00 | $98,006.37 | 17.88% |
| 3 | $-83.17 | $327,818.10 | $110,182.43 | 32.45% |
| 4 | $-83.17 | $337,652.64 | $122,834.92 | 47.59% |
| 5 | $-83.17 | $347,782.22 | $135,986.15 | 63.34% |
| 6 | $-83.17 | $358,215.69 | $149,659.70 | 79.71% |
| 7 | $-83.17 | $368,962.16 | $163,880.48 | 96.74% |
| 8 | $-83.17 | $380,031.02 | $178,674.81 | 114.47% |
| 9 | $-83.17 | $391,431.96 | $194,070.53 | 132.92% |
| 10 | $-83.17 | $403,174.91 | $210,097.05 | 152.13% |
Formula
How to use this calculator
- Enter the purchase price — the all-in price the property would sell for, not the listing price unless you expect to pay full ask.
- Enter the down payment percentage. Conventional investment property loans typically require 20–25% down; some lenders go as low as 15% with strong credit and higher rates.
- Enter expected closing costs. For an investment property purchase, budget 2–4% of purchase price (lender fees, title, appraisal, inspection, recording, prepaid items).
- Enter the mortgage rate. Investment property rates are typically 0.5–1.0% higher than primary-residence rates for the same borrower.
- Enter realistic monthly rent. Use comparable rentals in the same neighborhood — Rentometer, Zillow Rentals, and local property managers are sources. Be conservative for a first-time analysis.
- Enter a vacancy rate. 5–8% is typical for stable rental markets; 10%+ for high-turnover or seasonal markets. Even fully occupied properties have turnover gaps.
- Enter monthly operating expenses. Include: property tax (often $200–$500+/mo), insurance ($75–$150/mo), maintenance reserve (1–2% of value per year, divided by 12), property management (8–10% of rent if outsourcing), HOA (if applicable), utilities if landlord-paid.
- Enter an annual appreciation rate. The long-run U.S. average is 3–4% nominally. High-growth markets (Sun Belt, certain tech metros) have run 5%+; slow markets 1–2%. Be skeptical of recent-decade rates that may not repeat.
- Set the hold period in years. Real estate is a long-term play — 5+ years is typical, 10+ is where the math usually works best because transaction costs (6–10% on sale) eat short-term returns.
- Compare cash-on-cash return (immediate cash performance) to total ROI (including appreciation and paydown). The latter is the more complete picture.
Worked examples
Cash-flow-positive single-family rental
$250,000 purchase, 25% down ($62,500), $6,000 closing, 7% rate, $1,950/mo rent, 5% vacancy, $475/mo expenses, 3% appreciation, 10-year hold. Loan: $187,500. Annual P&I: ≈ $14,970. Gross income: 1,950 × 12 × 0.95 = $22,230 NOI: 22,230 − 5,700 = $16,530 Cash flow: 16,530 − 14,970 = $1,560/yr Cash-on-cash: 1,560 / 68,500 ≈ 2.3% Year 10 equity: $250K × 1.03^10 ≈ $336,000, less $161,000 remaining loan = $175,000 equity. Total return: $175,000 − $68,500 + $15,600 cumulative cash flow ≈ $122,100 on $68,500 invested. Annualized: ≈ 8.0% Decent but not spectacular. The property essentially pays for itself; appreciation and paydown create the real return.
"1% rule" property — strong cash flow
$180,000 purchase, 25% down ($45,000), $5,000 closing, 7% rate, $1,800/mo rent (1% of purchase price), 8% vacancy, $475/mo expenses, 2% appreciation, 10-year hold. Loan: $135,000. Annual P&I: ≈ $10,780. Gross income: 1,800 × 12 × 0.92 = $19,872 NOI: 19,872 − 5,700 = $14,172 Cash flow: 14,172 − 10,780 = $3,392/yr Cash-on-cash: 3,392 / 50,000 ≈ 6.8% Year 10 equity: $180K × 1.02^10 = $219,400, less $116,000 remaining loan = $103,400. Total return: $103,400 − $50,000 + $33,920 cumulative cash flow = $87,320 on $50,000 invested. Annualized: ≈ 11.8% This is the "old-school" rental investing playbook — buy in lower-priced markets where rents support the price. Lower appreciation, much higher current cash flow.
Appreciation-dependent deal — break-even cash flow
$500,000 purchase in a high-growth metro, 25% down ($125,000), $10,000 closing, 7% rate, $2,800/mo rent, 5% vacancy, $1,200/mo expenses, 5% appreciation, 10-year hold. Loan: $375,000. Annual P&I: ≈ $29,940. Gross income: 2,800 × 12 × 0.95 = $31,920 NOI: 31,920 − 14,400 = $17,520 Cash flow: 17,520 − 29,940 = −$12,420/yr (negative) Cash-on-cash: negative every year — you're subsidizing the property. But: 5% appreciation over 10 years → property worth $814,000. Less $323,000 remaining loan = $491,000 equity. Total return: $491,000 − $135,000 − $124,200 cumulative negative cash flow = $231,800 on $135,000 invested. Annualized: ≈ 13.8% This is the "bet on appreciation" strategy — you write checks every year hoping the market keeps rising. Real risk: if appreciation stalls or reverses, you've subsidized a money-losing operation. Most experienced investors avoid this profile.
When to use this calculator
Use this calculator before making an offer on a rental property, when evaluating multiple potential deals, or when refinancing or selling an existing rental. The output transforms the question "is this a good deal?" from gut feel into a structured comparison.
It's most useful as a sensitivity tool. Run the same property at: (1) the rent you hope to get vs. the rent that comparable rentals actually fetch, (2) realistic vacancy vs. zero vacancy, (3) honest maintenance reserves (1–2% of value per year is typical) vs. wishful thinking, (4) conservative appreciation vs. recent-trend extrapolation. Deals that only work under optimistic assumptions usually don't work at all.
Pair this calculator with: the cap-rate calculator (the standard quick-screen for whether a property is even in the ballpark), the mortgage-payment calculator (to size the debt payment), the property-tax calculator (often the biggest line item in monthly expenses), and the home-equity calculator (when tapping equity to fund the down payment).
A few real-world realities the calculator can't capture: tenant quality (the difference between a great tenant and a problematic one is enormous), repairs that come in lumps (a $12,000 roof replacement in year 4 wipes out 2–3 years of cash flow), interest rate risk if you used a short-term ARM, and the operational time cost — managing the property is real work even if you outsource it. For first-time investors, an honest budget for surprises and the cost of your own attention should be added on top.
Common mistakes to avoid
- Forgetting the 1% rule sanity check. Monthly rent ÷ purchase price below 0.7% usually means break-even or negative cash flow; above 1% means strong cash flow. Use the rule to screen out deals before doing the full math.
- Underestimating maintenance and capital expenditures. Many investors budget $50/month and reality is closer to 1–2% of property value per year. A $300K property realistically costs $3,000–$6,000/year in maintenance and reserves; ignoring this is a major source of disappointed returns.
- Treating gross rent as net income. Gross rent is the top line; cash flow is the bottom line. Many properties that look attractive at "$2,500/mo rent" reveal negative cash flow once vacancy, taxes, insurance, maintenance, and debt service are accounted for.
- Skipping a management fee even if self-managing. If you ever want to outsource (or sell to someone who will), the deal should pencil with 8–10% management built in. Self-managing is real work — paying yourself zero understates the true cost.
- Over-relying on appreciation. Appreciation is real but variable; some decades the property barely keeps up with inflation, others see 5%+ years. A deal that requires aggressive appreciation to make sense is a bet, not an investment.
- Ignoring the tax treatment. Rental properties offer powerful tax benefits — depreciation (27.5-year straight-line on residential), deductible operating expenses, mortgage interest deduction, 1031 exchanges for tax-deferred swap. Strong returns on paper can become much better after-tax, especially for high-bracket investors.
Frequently Asked Questions
Sources & further reading
- Renting and Real Estate Investments — IRS Topic 414 — U.S. Internal Revenue Service
- Publication 527 — Residential Rental Property — U.S. Internal Revenue Service
- HUD Housing Data — rental vacancy and rents by metro — U.S. Department of Housing and Urban Development