Cash-on-Cash Return Explained: How to Calculate It and What’s a Good Number

A good cash on cash return for a rental property in 2026 is somewhere between 8% and 12%, and most investors I talk to are landing closer to the lower end of that range right now (thanks to mortgage rates hanging around 6.3% to 6.5%). That number tells you exactly what your invested dollars are earning you in actual cash, every year, before taxes. Not theoretical appreciation. Not equity buildup. Just cash hitting your bank account relative to the cash you put in.

And honestly, it’s the first number I look at when someone sends me a deal. Not the cap rate. Not the projected IRR. Cash on cash return real estate investors care about because it answers the simplest question: is this property paying me right now?

According to Freddie Mac data from April 2026, the 30-year fixed rate is sitting around 6.30%. That matters because your mortgage rate is the single biggest lever on your CoC return. I’ve watched the same property go from a 10% cash on cash return to barely breaking even just because rates moved 200 basis points. So lets dig into what this metric actually means, how to calculate it, and how to use it without fooling yourself.

What Cash on Cash Return Actually Measures

The formula is almost embarrassingly simple:

Cash on Cash Return = Annual Pre-Tax Cash Flow / Total Cash Invested

That’s it. Your annual cash flow (rent minus all expenses minus your mortgage payment) divided by every dollar you put into the deal (down payment, closing costs, any rehab you did before renting it out).

So if a property throws off $6,480 a year in cash flow after everything is paid, and you put $81,000 into the deal, your cash on cash return is 8%. Not complicated right.

But here’s where people mess it up. They either inflate the numerator (cash flow) by forgetting expenses, or they shrink the denominator (cash invested) by leaving out closing costs and initial repairs. Both mistakes make the deal look better than it actually is. And I see this all the time, no big deal right. Except it is a big deal when you’re writing a $75,000 check.

Step-by-Step Calculation With Real Numbers

Lets walk through this with a real deal. I’m going to use numbers that are realistic for the Austin metro in 2026, not some fantasy scenario from a YouTube guru.

The Property:

• Purchase price: $300,000
• Down payment (25%): $75,000
• Closing costs: $6,000
• Total cash invested: $81,000

The Loan:

• Loan amount: $225,000
• Interest rate: 6.5% (30-year fixed)
• Monthly P&I payment: $1,422

Monthly Income:

• Gross rent: $2,200

Monthly Expenses (before mortgage):

• Property taxes: $500 (Austin area, roughly 2% of value)
• Insurance: $150
• Property management (8%): $176
• Maintenance/repairs (5%): $110
• Vacancy reserve (one month per year): $183
• CapEx reserve (5%): $110
• Total monthly expenses: $1,229

The Math:

• Monthly NOI: $2,200 – $1,229 = $971
• Monthly cash flow (after mortgage): $971 – $1,422 = -$451
• Annual cash flow: -$5,412
• Cash on cash return: -$5,412 / $81,000 = -6.7%

Yeah. Negative. I know that’s not the answer you wanted.

But that IS the honest answer for a lot of deals in Austin right now, and I’d rather show you the real math than pretend a $300,000 property renting for $2,200 a month is a cash flow machine at 6.5% interest. It’s not. And any cash on cash return calculator that tells you otherwise is either ignoring vacancy, skipping CapEx reserves, or both.

So When Does This Deal Actually Work?

Lets play with the numbers a bit. Same property, same expenses, but lets see what has to change to get to that 8% cash on cash return target.

Scenario 1: Higher rent ($2,800/mo)

• NOI: $2,800 – $1,349 = $1,451/mo (expenses scale up slightly with higher rent)
• Cash flow: $1,451 – $1,422 = $29/mo = $348/yr
• CoC return: $348 / $81,000 = 0.4%

Still not great. Barely positive.

Scenario 2: Lower interest rate (5.0%)

• Monthly P&I at 5.0%: $1,208
• Cash flow: $971 – $1,208 = -$237/mo
• CoC return: -$2,844 / $81,000 = -3.5%

Better but still negative. The rate helps but doesn’t fix a thin-margin deal.

Scenario 3: All cash (no mortgage)

• Cash invested: $300,000 + $6,000 = $306,000
• Annual NOI: $971 x 12 = $11,652
• CoC return: $11,652 / $306,000 = 3.8%

Now it’s positive but only 3.8%. This is essentially the cap rate. And this is where you start to see why some investors in Austin are buying for appreciation and tax benefits rather than cash flow right now.

The point of running these scenarios isn’t to depress you. It’s to show you that cash on cash return is a brutally honest metric. It doesn’t care about your feelings or your pro forma spreadsheet. It just tells you what the property is actually doing with your money right now.

What’s a Good Cash on Cash Return?

Here’s the general framework I use when evaluating deals:

Below 4%: You’re basically parking money for appreciation. That can work in Austin or other growth markets, but you need to have the stomach for it and the reserves to cover negative cash flow months. Not a strategy I’d recommend for your first rental.

4% to 7%: Acceptable in competitive markets with strong appreciation potential. You’re not losing money, you’re just not making much from cash flow alone. The real return comes from equity buildup and property value increases over time.

8% to 12%: This is the sweet spot for most buy-and-hold investors. Your property is paying you a meaningful return on your cash while also (hopefully) appreciating. This is where I like to see deals land.

Above 12%: Great if it’s real. But when I see projections above 12%, I start looking harder at the assumptions. Are they accounting for vacancy? Management fees? Is the property in a market where tenants are stable? Benjamin Graham called this “margin of safety” in The Intelligent Investor, and it applies to real estate just as much as stocks. If the numbers look too good, something is probably missing from the spreadsheet.

One thing I want to be direct about. The “good” number depends enormously on where you’re buying. I’ve helped investors purchase properties in Central Texas markets like Bee Cave and Lakeway where the cash on cash return was 3% or 4%, but the five-year total return (including appreciation) was north of 15% annually. Meanwhile, a property in a declining Midwest market might show 10% CoC on paper but lose value every year. CoC doesn’t tell the whole story, which brings me to the next section.

Cash on Cash Return vs Cap Rate vs ROI vs IRR

This is where most new investors get confused, and I don’t blame them. There are too many acronyms and not enough plain English explanations. So lets fix that.

Cash on Cash Return measures what your invested cash earns you right now, this year, after paying the mortgage. It’s a snapshot. One year at a time. It accounts for leverage (your loan).

Cap Rate (Capitalization Rate) is the property’s NOI divided by its purchase price. Think of it as the cash on cash return you’d get if you paid all cash. No mortgage in the equation. It’s useful for comparing properties against each other regardless of how they’re financed.

ROI (Return on Investment) looks at the total return over the entire time you hold the property. It includes appreciation, principal paydown, cash flow, and the eventual sale. Broader view, longer time horizon.

IRR (Internal Rate of Return) is the finance nerd’s favorite. It takes all the same inputs as ROI but accounts for the time value of money. A dollar today is worth more than a dollar in five years, and IRR captures that. It’s the best metric for comparing two investments with different hold periods.

When to use each one:

Use CoC return when you’re screening deals and want to know “will this property pay me right now.” It’s the filter. The first test.

Use cap rate when you’re comparing two or more properties and want to remove financing from the equation. Useful when you’re comparing a deal with 25% down against one with 20% down.

Use ROI when you’re evaluating a deal you’ve already owned for a few years. “How did this investment actually perform?”

Use IRR when you’re comparing investments with different timelines or exit strategies. A five-year flip vs a ten-year buy-and-hold need IRR to make an apples-to-apples comparison.

I tend to start with CoC return as the first filter, then dig into cap rate and projected IRR for deals that pass the initial screen. If you’re evaluating investment property in Austin, CoC is where you start.

How Leverage Affects Your Cash on Cash Return

This is the part that makes people’s eyes light up. And then sometimes makes them nervous.

Lets use our $300,000 property but compare two scenarios:

All Cash Purchase:

• Cash invested: $306,000
• Annual NOI: $11,652
• CoC return: 3.8%

Financed (25% down at 6.5%):

• Cash invested: $81,000
• Annual cash flow: -$5,412
• CoC return: -6.7%

Wait. In this case leverage actually HURTS you. And that’s the honest truth about leverage in a high-rate environment. When your mortgage rate is higher than your cap rate (6.5% vs 3.8%), leverage works against you. Your cost of debt exceeds your return on the asset.

But flip those numbers. If rates were 4.5% instead of 6.5%:

Financed (25% down at 4.5%):

• Monthly P&I: $1,140
• Monthly cash flow: $971 – $1,140 = -$169
• Annual cash flow: -$2,028
• CoC return: -2.5%

Still negative on THIS property. But now picture a deal with higher rents relative to price (say, a duplex or a property in a secondary market):

Better deal, financed at 4.5%:

• $250K property, $2,000/mo rent, $67,500 cash invested
• Monthly expenses (before mortgage): $900
• NOI: $1,100/mo
• Monthly P&I (at 4.5%): $950
• Cash flow: $150/mo = $1,800/yr
• CoC return: $1,800 / $67,500 = 2.7%

Now buy that same $250K property all cash:

• Cash invested: $256,000
• Annual NOI: $13,200
• CoC return: 5.2%

So with all cash you get 5.2% return on $256,000. With leverage at 4.5% you get 2.7% but on only $67,500. Which means you could buy almost four properties with that $256,000 instead of one. Four properties at 2.7% each on four separate assets that are all appreciating and building equity independently.

That’s the magic of leverage when rates cooperate. And that’s the frustration of leverage when they don’t. Right now we’re in a tough spot for leveraged cash flow in Austin, which is exactly why understanding your cash on cash return before you buy is so critical. You can explore some Hill Country investment properties to see where the numbers are currently working.

Common Mistakes in Cash on Cash Return Calculations

I’ve reviewed hundreds of investor spreadsheets over the years and these mistakes show up constantly. If you’re running your own numbers, check for these.

Forgetting vacancy. I don’t care what your property manager promises you about 100% occupancy. Budget for at least one vacant month per year (8.3%). In Austin, average vacancy runs between 5% and 8% for well-located long-term rentals. If you’re running STR numbers, vacancy gets even more volatile.

Skipping CapEx reserves. Your roof doesn’t care about your spreadsheet. Budget 5% of gross rent for capital expenditures (roof, HVAC, water heater, appliances). You won’t spend it every year, but when you do, it’ll be a $5,000 to $15,000 hit in a single month. If you don’t have a reserve for that, one repair can wipe out two years of cash flow.

Ignoring management fees. Even if you self-manage, include 8% to 10% for property management in your calculations. Why? Because someday you might not want to manage it anymore. Or you might buy your fifth property and realize you can’t manage them all yourself (hi, that’s me). If the deal only works because YOU are the free labor, it’s not really an 8% return. That’s you working for the difference.

Using projected rents instead of actual comps. Pull actual rental comps from the area. What are similar properties ACTUALLY renting for right now? Not what Zillow’s “Rent Zestimate” says. Not what the seller’s pro forma claims. What real tenants are paying today. I always tell investors to use the lower end of the comp range for their projections. You can always be pleasantly surprised.

Forgetting closing costs and rehab in total cash invested. If you spend $6,000 on closing costs and $12,000 fixing up the property before renting it, that’s $18,000 that needs to be in your denominator. I’ve seen investors calculate their CoC using only the down payment, which inflates the return by 20% or more.

How Cash on Cash Return Changes Over Time

Here’s something that doesn’t get enough attention. Your CoC return on day one is NOT your CoC return in year five.

Two things happen as you hold a rental property:

Rents increase. If you’re in a growing market (and Austin qualifies, we’ve averaged around 3% to 4% annual rent growth over the past decade), your income goes up every year but your mortgage payment stays the same. That means your cash flow improves every single year.

Your loan balance goes down. More of each payment goes toward principal over time. This doesn’t affect your CoC directly (CoC only looks at cash flow, not equity buildup), but it does mean your total return is improving even if your CoC stays flat.

Lets see what happens to our example property after five years of 3% annual rent increases:

Year 1 rent: $2,200/mo, cash flow: -$451/mo, CoC: -6.7%
Year 3 rent: $2,334/mo, cash flow: -$317/mo, CoC: -4.7%
Year 5 rent: $2,476/mo, cash flow: -$175/mo, CoC: -2.6%
Year 7 rent: $2,627/mo, cash flow: -$24/mo, CoC: -0.4%
Year 8 rent: $2,706/mo, cash flow: roughly breakeven

So this property that starts out cash-flow negative hits breakeven around year seven or eight. By year ten you’re looking at positive cash flow and a property that’s probably worth $375,000 or more. The CoC return on your ORIGINAL $81,000 investment starts climbing into positive territory, and by year ten you might be at 3% to 4% CoC with a property that’s thrown off significant appreciation.

This is the tortoise approach I’ve been writing about for over a decade. The deal doesn’t have to be a home run on day one. It has to be honest, sustainable, and pointed in the right direction.

What Cash on Cash Return Doesn’t Tell You

And here’s where I need to pump the brakes on CoC worship. Because as useful as this metric is, it leaves some important things on the table.

Appreciation. CoC ignores what happens to the property’s value. In a market like Austin where we’ve seen median prices grow significantly over the past decade, appreciation can dwarf your annual cash flow. A property earning 3% CoC but appreciating at 5% per year is creating way more wealth than the CoC number suggests.

Tax benefits. Depreciation is real money. A $300,000 rental property (allocating roughly $240,000 to improvements) gives you about $8,727 per year in depreciation that offsets your rental income. If you’re in the 32% tax bracket, that’s $2,793 in real tax savings that CoC completely ignores. Investors who qualify for bonus depreciation or cost segregation studies can accelerate those savings dramatically.

Equity buildup through loan paydown. Every mortgage payment includes principal reduction. In year one of our example, about $2,500 goes toward principal. By year ten, it’s closer to $4,500. That’s equity being built with your tenant’s money, and CoC doesn’t count it.

Forced appreciation through improvements. If you buy a property, put in $20,000 of renovations, and the value jumps by $50,000, that $30,000 in created equity doesn’t show up in CoC at all.

This is why sophisticated investors look at cash on cash return as one metric in a broader picture. CoC is the first filter, not the final answer. It tells you whether the property can sustain itself financially. The rest of the return comes from places CoC doesn’t measure. For a deeper look at how these strategies work together, visit our real estate investing hub.

Using Cash on Cash Return to Compare Deals Side by Side

Here’s where CoC really earns its keep. When you’re looking at two or three potential properties at the same time, CoC lets you compare apples to apples.

Property A: $300K house, $81K cash invested, -$5,412 annual cash flow. CoC: -6.7%.
Property B: $220K duplex (each side rents for $1,200), $61K cash invested, $3,240 annual cash flow. CoC: 5.3%.
Property C: $180K property in San Antonio, $50K cash invested, $4,800 annual cash flow. CoC: 9.6%.

On a pure cash on cash basis, Property C wins. But then you factor in that Property A is in a faster-appreciating market, and Property B gives you two tenants instead of one (diversified risk), and suddenly the decision isn’t so simple.

That’s what I tell every investor I work with: run the CoC numbers to filter out deals that don’t make financial sense, then use your judgment and local market knowledge to pick the best opportunity from what’s left. Because the spreadsheet gets you 80% of the way there. The last 20% comes from knowing the market. What streets are improving. Which landlords are about to list their duplexes. Where the city is investing in infrastructure.

If you’re looking at deals that involve DSCR loans, CoC becomes even more important because those loans are specifically designed for investors who need the property’s income to qualify. Your lender is literally going to evaluate the deal the same way you should.

And if you’re considering triple net (NNN) lease investments as an alternative, know that NNN deals typically come with lower CoC returns (4% to 6%) but also far less management headache. That tradeoff is worth understanding before you decide which path fits your portfolio.

The Bottom Line

Cash on cash return is the most honest metric in real estate investing. It strips away the wishful thinking and tells you exactly what your money is doing right now. But it’s not the only metric that matters, and treating it like gospel will cause you to miss good deals in appreciation markets.

My approach: use CoC as the first filter. If the number makes you uncomfortable, dig into why. Sometimes a low CoC today turns into a strong CoC in three to five years as rents climb. Sometimes a high CoC is hiding deferred maintenance or a declining neighborhood. The number opens the conversation. Your due diligence finishes it.

If you’re running numbers on potential investment properties and want someone to sanity-check your math, lets talk. I’ve been doing this for 19 years and I still run every deal through the same basic formula before I get excited about anything else.