How to Calculate ROI on Rental Property
ROI (return on investment) on rental property goes beyond simple cash flow. A rental property generates returns in four ways: monthly cash flow, property appreciation, mortgage paydown (equity buildup), and tax benefits. Calculating only one of these gives you an incomplete picture. This guide covers how to calculate each component and combine them into a total ROI that lets you compare rental investments accurately.
The four components of rental ROI
1. Cash flow
Monthly rental income minus all expenses (mortgage, taxes, insurance, maintenance, management, vacancy). This is the most tangible return — money in your bank account every month. See our cash on cash return guide for the detailed formula.
2. Appreciation
The increase in property value over time. Treat any appreciation figure as an assumption, not a forecast; it varies a lot by market and year. Appreciation is unrealized until you sell or refinance.
3. Equity buildup (mortgage paydown)
Each mortgage payment includes principal that reduces your loan balance. How much depends on the rate: on a 30-year loan at 7.0%, only about 13% of year-1 payments go to principal, rising to about 24% in year 10 (from the amortization schedule). At lower rates the principal share is larger. Your tenant is effectively buying the property for you.
4. Tax benefits
Depreciation (27.5 years for residential rental buildings, not the land), mortgage interest deduction, expense deductions, and potentially pass-through deductions. These reduce your taxable income, which is a real economic benefit even if it does not show up as cash flow. Whether you can use a rental loss depends on the passive-activity rules and your income (IRS Publications 527 and 925). This is general information, not tax advice; check with a tax professional.
Simple ROI formula (cash purchases)
ROI = Annual Net Income ÷ Total Investment × 100
Purchase: $180,000 all cash + $4,500 closing + $8,000 repairs = $192,500 invested
Annual rental income: $19,200
Annual expenses (taxes, insurance, maintenance, management, vacancy): −$9,032
Net income: $10,168
ROI = $10,168 ÷ $192,500 = 5.3%
This basic calculation only captures cash flow. For a complete picture, you need to add appreciation, equity buildup, and tax savings.
Total ROI formula (leveraged purchases)
Total Annual ROI = (Cash Flow + Equity Buildup + Appreciation + Tax Savings) ÷ Total Cash Invested
Purchase: $180,000, 25% down ($45,000), $4,500 closing, $8,000 repairs = $57,500 cash invested
Loan: $135,000 at 7.0%, 30-year fixed
Monthly principal and interest: $898 ($10,778 a year)
Cash flow: $19,200 rent − $9,032 operating expenses − $10,778 debt service = about −$610/year (see CoC example)
Equity buildup: ~$1,371 in year 1 (principal portion of mortgage payments, from the amortization schedule)
Appreciation: $180,000 × an assumed 3% = $5,400 (unrealized until you sell or refinance)
Tax savings: land isn’t depreciable. If $144,000 of the price is the building, depreciation is $144,000 ÷ 27.5 = $5,236, worth about $1,257 in a 24% bracket, if you can use the rental loss (not tax advice)
Total return: −$610 + $1,371 + $5,400 + $1,257 = $7,418
Total ROI: $7,418 ÷ $57,500 = 12.9%
The property that had negative cash-on-cash return shows a 12.9% total return when you include all four components. This is why some investors accept negative cash flow in high-appreciation markets, but most of that 12.9% is assumed appreciation and a tax benefit you may not be able to use, so a deal that only works because of appreciation is a bet on the market. Three methods give three very different answers for the same house (slightly negative cash-on-cash, 5.3% all-cash, 12.9% total), so always state which method you used.
About the depreciation figure
Residential rental buildings are depreciated over 27.5 years (IRS Publication 527), and land is never depreciable, so take the land value out of the price first. If you actively participate in the rental, up to $25,000 of rental losses a year can offset other income, but that allowance phases out between $100,000 and $150,000 of modified adjusted gross income (IRS Publication 925). Above that, the loss is usually carried forward instead of saving tax this year, and your year-1 total ROI is lower. This is general information, not tax advice.
Key metrics to calculate
| Metric | Formula | What It Tells You |
|---|---|---|
| Cash on cash return | Annual cash flow ÷ cash invested | Return on your actual cash, with financing |
| Cap rate | NOI ÷ purchase price | Return if purchased all-cash (financing-neutral) |
| Total ROI | (All 4 returns) ÷ cash invested | Complete annual return including unrealized gains |
| 1% rule | Monthly rent ≥ 1% of purchase price | Quick screening: $180,000 property should rent for $1,800+ |
| DSCR | NOI ÷ annual debt service | Ability to cover mortgage. Lenders want 1.2+ |
| IRR | Discount rate at which initial cash + future cash flows + eventual sale have a net present value of zero | Return over the whole hold period, accounting for the time value of money |
Which method to use when
| Situation | Best Method | Why |
|---|---|---|
| Quick screening | Cap rate | Fast, no financing assumptions needed |
| Comparing deals with the same down payment | Cash-on-cash | Measures actual cash return |
| Long-term hold analysis | Total ROI or IRR | Captures all return components; IRR also handles different hold periods and cash flow patterns |
| Presenting to rental buyers | Cash-on-cash + cap rate | Buyers understand both metrics |
Year-by-year ROI projection
ROI improves over time for most rental properties because rent increases, the mortgage balance decreases, and appreciation compounds. If rents rise, each year’s cash flow improves, and the principal share of each payment grows (about 13% in year 1 at 7.0%, about 24% by year 10). How much the total ROI rises depends on your rent-growth, expense-growth and appreciation assumptions, so model them rather than assuming a number.
For multi-year projections, use a rental property calculator that models rent growth, expense growth, appreciation, and amortization over time.
What is a good ROI on rental property?
These are common investor rules of thumb, not published benchmarks. Set your own targets from your financing, market and risk.
| Return Type | Good | Great | Context |
|---|---|---|---|
| Cash on cash | 6-8% | 10%+ | With 25% down, 7% rate in 2026 |
| Cap rate | 5-7% | 8%+ | Varies by market and property class |
| Total ROI (year 1) | 12-15% | 18%+ | Including appreciation and tax benefits |
Common ROI calculation mistakes
- Forgetting vacancy. No property stays rented 365 days. Budget 5-10% vacancy.
- Ignoring capex reserves. Roofs, HVAC, and water heaters need replacing. Budget 5-8% of rent for capital expenditures beyond routine maintenance.
- Using list rent, not market rent. Verify achievable rent with rental comps, not what the seller or Zillow claims.
- Not including all cash invested. Down payment + closing costs + repairs + initial vacancy period = your total investment.
- Depreciating the land. Only the building is depreciable, so take the land value out first.
- Projecting appreciation as guaranteed. Include appreciation in your analysis but do not depend on it. Cash flow should be positive on its own for a conservative investment.
Comparing rental investments
When choosing between multiple rental properties, compare on a consistent basis:
- Same metric. Compare CoC to CoC, cap rate to cap rate. Do not compare Property A's CoC to Property B's cap rate.
- Same assumptions. Use the same vacancy, maintenance, and management percentages for all properties.
- Same time horizon. A property that cash flows better in year 1 may underperform over 10 years if appreciation and rent growth are lower.
- Risk-adjusted. A 12% CoC in a rough neighborhood with high turnover is not equivalent to 8% CoC in a stable suburban market.