Return on Investment (ROI)

What Is Return on Investment (ROI)?

ROI measures how much profit you've earned relative to your total investment. Formula: (Net Profit ÷ Total Investment) × 100. A $41,000 investment that nets $6,000 in year one gives you 14.6% ROI. Many investors aim for at least 8–10% annually. It's different from cap rate (which ignores financing) and cash-on-cash return (which focuses on cash flow only)—ROI captures the full picture of what you put in and what you get back.

ROI (return on investment) is the percentage you earn when you divide your profit by the total amount you invested—for every dollar you put in, how many cents come back.

At a Glance

What it is: Profit as a percentage of total cash invested. (Net Profit ÷ Total Investment) × 100.
Why it matters: Tells you if your money is working. Under 5% and it's barely moving; over 10% and you're doing well.
How to use it: Set a target (e.g., 8% annually) and screen deals. Walk away if the numbers don't hit it.
Common range: 8–10% is a solid target for rentals. Fix-and-flip ROI is higher but riskier—often 20%+ on the capital deployed.
What it ignores: ROI is a snapshot. It doesn't show monthly cash flow or equity build—run cap rate and cash-on-cash return alongside it.

How It Works

ROI answers one question: for every dollar I put in, how many cents do I get back?

The formula. Net Profit ÷ Total Investment, then × 100 for a percentage. "Total investment" means everything you spent: down payment, closing costs, rehab, reserves you had to fund. "Net profit" means what you actually kept after expenses—year-one net income for a hold (NOI minus debt service), or sale proceeds minus all-in cost if you flip.

Annual vs. total. For a buy-and-hold, you often calculate annual ROI: year-one net income ÷ total cash invested. For a flip, it's total profit ÷ total invested, expressed as a percentage of the capital deployed over the hold period. A $50,000 profit on $200,000 invested in 8 months is 25% ROI—but annualized, that's roughly 37.5%. Always clarify the time frame when comparing deals.

How it differs from cap rate and cash-on-cash return. Cap rate = NOI ÷ property value. It ignores your financing—same cap rate whether you put 20% or 50% down. Cash-on-cash return = annual cash flow ÷ cash invested. It captures financing but ignores equity build and appreciation. ROI can include everything: cash flow, principal paydown, and appreciation when you sell. Use all three. ROI for overall profitability; cap rate for financing-independent yield; CoC for monthly viability.

Real-World Example

Memphis duplex. You buy for $185,000. Down payment $46,250 (25%), closing costs $4,200, $12,000 in immediate repairs. Total invested: $62,450.

Year one: gross rent $2,400/month. After taxes, insurance, maintenance, vacancy reserve, and mortgage ($1,047/month P&I), you net $4,800 for the year. ROI = ($4,800 ÷ $62,450) × 100 = 7.7%. Below your 8% target—but close. Raise rent $75/unit and you're at 8.2%.

Same property, flip. You buy for $120,000, put $35,000 into rehab, sell for $195,000 in 7 months. After commissions and holding costs, net profit $38,000. Total invested: $155,000. ROI = ($38,000 ÷ $155,000) × 100 = 24.5%. That's strong—but you took on renovation risk, market risk, and 7 months of carrying costs. ROI doesn't show that. Run the numbers both ways before you decide.

Pros & Cons

Advantages

Single number that answers "Is this worth it?"—easy to compare deals.
Captures total profit, not just cash flow—includes equity build and appreciation.
Leverage amplifies it: 5% appreciation on a 20% down payment = 25% ROI on your cash.
Works for holds and flips—same formula, different time frames.
Forces you to count every dollar in (closing costs, rehab, reserves) so you don't kid yourself.

Drawbacks

Snapshot only—doesn't show monthly cash flow or payment stress.
Easy to fudge: leave out closing costs, underestimate rehab, and ROI looks better than it is.
Ignores time—25% over 8 months isn't the same as 25% over 8 years.
Doesn't account for your effort—a 12% ROI with 40 hours/month of management isn't the same as 10% with a property manager.

Watch Out

Cherry-picking costs: If you exclude closing costs, capex reserves, or rehab overruns from "total invested," ROI inflates. Count everything. A deal that only works when you skip $8,000 in costs isn't an 11% ROI—it's a 7% ROI with bad math.
Ignoring time: 20% ROI over 6 months annualizes to 40%. 20% over 3 years is 6.3% per year. Always annualize when comparing holds to flips.
Apples to oranges: ROI on a flip (sale profit) vs. ROI on a hold (annual net income) measure different things. Don't compare a flip's 30% to a hold's 8% without clarifying the time frame.
Over-leverage trap: Leverage boosts ROI when values rise. When they fall, it amplifies losses. A 90% LTV property that drops 15% wipes out your equity—your ROI goes negative fast.

Ask an Investor

The Takeaway

ROI tells you if your money is working. (Net Profit ÷ Total Investment) × 100. Aim for 8–10% on rentals; higher on flips, but factor in risk and time. Count every dollar you put in—closing costs, rehab, reserves. Run it alongside cap rate and cash-on-cash return. Set your target before you shop. Walk away when the numbers don't hit it.