Cash-on-Cash Return: Formula and Calculator for Rental Properties
What Is Cash-on-Cash Return?
Cash-on-cash return (CoC) measures the annual percentage return on the actual cash you put into a real estate investment. Not the total property value — just your money.
The formula:
Cash-on-Cash Return = Annual Pre-Tax Cash Flow / Total Cash Invested
If you invest $80,000 of your own money (down payment, closing costs, and any initial rehab) and the property produces $7,200 in annual cash flow after all expenses and mortgage payments, your cash-on-cash return is 9%.
This metric matters because most investors don’t pay all cash. They use mortgages. Cap rate tells you how the property performs on its own. Cash-on-cash return tells you how the deal performs for you — given your specific down payment and loan terms.
A property with a mediocre cap rate can deliver a strong CoC return with the right financing. A property with a great cap rate can deliver a terrible CoC return if the mortgage eats all the income. CoC is where theory meets your bank account.
Cash-on-Cash Return Formula Breakdown
The calculation has two parts: figuring out your annual cash flow, then dividing by your total cash invested.
Part 1: Calculate Annual Pre-Tax Cash Flow
Start with gross rental income and subtract everything that comes out of it:
- Gross Rental Income — total rent collected at full occupancy
- Minus vacancy loss — typically 5%-8% of gross rent
- Minus operating expenses — property taxes, insurance, maintenance, management, utilities, landscaping
- Equals Net Operating Income (NOI)
- Minus annual debt service — your total mortgage payments (principal + interest) for the year
- Equals Annual Pre-Tax Cash Flow
The key difference from NOI: cash flow includes your mortgage payment. NOI stops before debt service. Cash flow continues through it.
Part 2: Calculate Total Cash Invested
Add up every dollar of your own money that went into the deal:
- Down payment
- Closing costs (buy side — typically 2%-4% of purchase price)
- Rehab/renovation costs (if any upfront work was needed)
- Reserves set aside (if you parked cash in a property reserve account)
Do NOT include the mortgage amount. The bank’s money isn’t your cash invested.
What’s a Good Cash-on-Cash Return?
Here’s a general framework:
- Below 5%: Weak. You’re barely beating a savings account. Unless you’re banking on heavy appreciation, consider other options.
- 5%-8%: Acceptable in expensive markets where appreciation does the heavy lifting.
- 8%-12%: Solid. This is the sweet spot most rental property investors target. Good income without taking on excessive risk.
- 12%-15%: Strong. Usually means you found a deal below market value, have favorable financing, or are in a high-yield market.
- 15%+: Excellent. Common with the BRRRR strategy or deep value-add deals where you forced equity and refinanced.
Context matters. A 6% CoC in San Francisco (with 5%+ annual appreciation) could outperform a 12% CoC in a flat market when you factor in total return. CoC measures cash income only — it’s not the whole picture.
Example Calculation: $250K Rental Property
Walk through a realistic deal from start to finish.
Property: Single-family rental, $250,000 purchase price
Financing: 25% down payment, 30-year fixed at 7% interest
Monthly rent: $1,800
Income
| Item | Monthly | Annual |
|---|---|---|
| Gross Rental Income | $1,800 | $21,600 |
| Vacancy (7%) | -$126 | -$1,512 |
| Effective Gross Income | $1,674 | $20,088 |
Expenses
| Operating Expense | Annual |
|---|---|
| Property Taxes | $3,000 |
| Insurance | $1,400 |
| Maintenance (8% of rent) | $1,728 |
| Property Management (8%) | $1,607 |
| Miscellaneous | $500 |
| Total Operating Expenses | $8,235 |
Cash Flow
| Item | Annual |
|---|---|
| Effective Gross Income | $20,088 |
| Total Operating Expenses | -$8,235 |
| NOI | $11,853 |
| Annual Mortgage Payment ($1,247/mo) | -$14,964 |
| Pre-Tax Cash Flow | -$3,111 |
Total Cash Invested
| Item | Amount |
|---|---|
| Down Payment (25%) | $62,500 |
| Closing Costs (3%) | $7,500 |
| Total Cash Invested | $70,000 |
Cash-on-Cash Return = -$3,111 / $70,000 = -4.4%
This deal loses money every month with these assumptions. The 7% mortgage rate is eating the cash flow. At a 5% rate, the mortgage drops to about $1,006/month ($12,072/year), and the CoC return jumps to roughly -0.3% — still marginal. This is why buying your first rental property requires stress-testing the numbers, not just running them once. In a high-rate environment, you either need a lower purchase price, higher rent, or a bigger down payment to make the deal work.
At $1,800/month rent, this property needs to cost closer to $190,000-$200,000 to generate a healthy CoC return with current rates.
Cash-on-Cash Return vs. Cap Rate vs. ROI
These three metrics get confused constantly. They each measure something different.
| Metric | What It Measures | Includes Financing? | Includes Appreciation? | Best For |
|---|---|---|---|---|
| Cap Rate | Property yield (unlevered) | No | No | Comparing properties |
| Cash-on-Cash | Return on your invested cash | Yes | No | Evaluating your deal |
| Total ROI | Complete return (cash flow + appreciation + equity paydown + tax benefits) | Yes | Yes | True performance |
Cap rate is the property’s report card — how it performs on its own. Use it to compare two buildings in the same market. Full cap rate guide here.
Cash-on-cash return is your personal report card — how the deal works given your specific financing. Two investors buying the same building will have different CoC returns if they put different amounts down.
Total ROI is the complete picture — but it’s harder to calculate because appreciation is speculative and tax benefits vary by investor. Still, ignoring appreciation and equity paydown gives an incomplete view of total wealth building.
Smart investors calculate all three. Cap rate for initial screening, CoC for deal structuring, and ROI for long-term projections.
How Financing Affects Cash-on-Cash Return
Leverage amplifies returns — in both directions. Here’s the same property analyzed two ways.
Property: $300,000 purchase, $21,000 NOI (7% cap rate)
| Scenario | All Cash | 75% LTV at 6.5% |
|---|---|---|
| Purchase Price | $300,000 | $300,000 |
| Cash Invested | $300,000 | $84,000 |
| NOI | $21,000 | $21,000 |
| Annual Debt Service | $0 | $17,064 |
| Pre-Tax Cash Flow | $21,000 | $3,936 |
| Cash-on-Cash Return | 7.0% | 4.69% |
Wait — the financed deal has a lower CoC? That’s negative leverage. The mortgage rate (6.5%) is close to the cap rate (7%), so borrowing barely helps. The gap between cap rate and mortgage rate is too thin.
Now run the same deal at 4.5% interest:
| Scenario | All Cash | 75% LTV at 4.5% |
|---|---|---|
| Annual Debt Service | $0 | $13,680 |
| Pre-Tax Cash Flow | $21,000 | $7,320 |
| Cash-on-Cash Return | 7.0% | 8.71% |
Now the financed deal wins. Positive leverage occurs when the property’s yield (cap rate) exceeds the cost of borrowing. The wider that gap, the more leverage amplifies your CoC return.
This is why the interest rate environment matters so much for rental property investing. In the 3%-4% rate era of 2020-2021, almost any rental property generated positive leverage. At 7%+ rates, it’s much harder to find deals where financing boosts returns. The calculate your mortgage payment lets you test different rate scenarios.
When Cash-on-Cash Return Misleads
CoC is a strong metric, but it has gaps. Know what it misses.
It Ignores Appreciation
A property throwing off 3% CoC in a market appreciating 6% annually is building wealth fast — CoC just doesn’t show it. If you only look at CoC, you’d dismiss markets like Austin or Boise where cash flow is thin but equity growth is strong.
It Ignores Equity Paydown
Every mortgage payment builds equity as principal gets paid down. That’s a real return — your tenant is buying the property for you — but CoC doesn’t count it. On a $225,000 mortgage, roughly $3,000-$4,000 goes to principal in year one. That’s effectively a 3.5%-4.8% hidden return on your $84,000 invested.
It’s a Short-Term View
CoC calculates year-one return. But rents increase over time, while fixed-rate mortgage payments stay the same. A property with a 5% CoC in year one might yield 10%+ by year five as rents climb. Looking only at year-one CoC can make you pass on deals that improve significantly over time.
Rehab Timing Distorts It
If you spend $30,000 on rehab in year one, your total cash invested is high and your CoC looks low. By year two, that rehab cost is still in the denominator, but now you have full rental income. Some investors calculate CoC on a “stabilized” basis — after rehab is complete and the property is fully rented. This is where the BRRRR method shines: you refinance out your rehab costs, resetting your cash invested to a much lower number.
Frequently Asked Questions
What’s the minimum cash-on-cash return I should accept?
Most investors set a floor of 8% for rental properties where cash flow is the primary goal. In appreciation markets (coastal cities, growing metros), some accept 4%-6% because they expect property values and rents to rise. If a deal can’t beat a CD or Treasury yield on a cash basis, you need a strong appreciation thesis to justify the risk and effort of being a landlord.
Should I calculate CoC before or after taxes?
The standard formula uses pre-tax cash flow. Tax implications vary wildly between investors based on income level, depreciation schedules, and entity structure. You can calculate an after-tax CoC by subtracting estimated taxes from cash flow, but most deal analysis uses pre-tax numbers for consistency and comparability.
How does house hacking affect CoC?
House hacking (living in one unit of a multifamily property) can dramatically boost CoC because you’re offsetting your own housing cost. If you’d otherwise pay $1,500/month in rent, that saved expense effectively adds $18,000/year to your return. Some house hackers show CoC returns of 20%-30%+ when you factor in housing savings.
Can I use CoC for private lending?
You can, but it’s simpler. If you lend $100,000 at 10% interest-only, your CoC is 10%. The formula still works — annual income divided by cash deployed. It just becomes straightforward without the complexity of operating expenses and property management.
Does CoC improve over time?
Usually yes, for fixed-rate financed properties. Rents tend to rise 2%-4% annually while your fixed mortgage payment stays constant. Operating expenses also rise, but the net effect is typically positive. A property showing 8% CoC in year one might produce 12%+ CoC by year seven or eight. This is the compounding effect that makes buy-and-hold investing powerful. For metrics that stay stable over time, check out how the 1% rule applies to screening deals. Pair your CoC analysis with the best investing cities data to find markets where the numbers work today.