Cash-on-Cash Return Calculator: What It Is and How to Use It

Cash-on-cash return is the metric that tells you how hard your actual invested dollars are working in a rental property. Unlike cap rate (which assumes all-cash purchase) or total ROI (which includes appreciation and tax benefits), cash-on-cash return focuses on one thing: how much annual cash flow you're earning relative to the cash you put into the deal.

It's the single most practical metric for investors who use financing, which is most of us.

The Cash-on-Cash Return Formula

The formula is straightforward:

Cash-on-Cash Return = Annual Pre-Tax Cash Flow / Total Cash Invested x 100

Where:

• Annual Pre-Tax Cash Flow = Net Operating Income - Annual Mortgage Payments (principal + interest)
• Total Cash Invested = Down Payment + Closing Costs + Renovation Costs (any cash you put into the deal)

That's it. No complicated adjustments, no guessing about future appreciation or tax benefits. It's a pure cash-in, cash-out calculation.

What Is a Good Cash-on-Cash Return?

This is the question every new investor asks. The answer depends on the current interest rate environment and your alternative investment options:

• Below 4%: Generally not worth the effort. A stock index fund has historically returned 7-10% annually with far less work. Unless you're betting heavily on appreciation, this return doesn't justify the management burden.
• 4-6%: Acceptable in expensive markets where appreciation is the primary strategy. Common in coastal cities.
• 6-8%: Solid. You're beating most fixed-income investments and building equity simultaneously.
• 8-12%: The sweet spot. This is what most experienced investors target. Achievable in Midwest and Southeast markets or through value-add strategies.
• 12-20%: Excellent. Usually requires finding below-market deals, significant renovation, or creative financing.
• 20%+: Exceptional and typically short-lived. Common in BRRRR (Buy, Rehab, Rent, Refinance, Repeat) strategies where you force equity through renovation.

In the current 7% mortgage rate environment, achieving 8%+ cash-on-cash return is harder than it was with 3-4% rates. Many investors have adjusted their targets to 6-8% and rely more on appreciation and principal paydown for total returns.

How Leverage Changes the Equation

Cash-on-cash return is where leverage becomes visible. Let's walk through the same property with different financing scenarios to see how leverage affects your return.

Property: $300,000 purchase price, $18,000/year NOI (6% cap rate)

Scenario 1: All Cash Purchase

• Cash invested: $300,000
• Annual cash flow: $18,000 (no mortgage)
• Cash-on-cash return: 6.0%

Scenario 2: 20% Down at 7% Interest

• Cash invested: $60,000 + $5,000 closing = $65,000
• Annual mortgage: $19,164 ($1,597/month on $240K loan)
• Annual cash flow: $18,000 - $19,164 = -$1,164
• Cash-on-cash return: -1.8%

Scenario 3: 20% Down at 5% Interest

• Cash invested: $65,000
• Annual mortgage: $15,456 ($1,288/month on $240K loan)
• Annual cash flow: $18,000 - $15,456 = $2,544
• Cash-on-cash return: 3.9%

Scenario 4: 25% Down at 7% Interest

• Cash invested: $75,000 + $5,000 = $80,000
• Annual mortgage: $17,964 ($1,497/month on $225K loan)
• Annual cash flow: $18,000 - $17,964 = $36
• Cash-on-cash return: 0.05%

The key insight: when mortgage rates exceed your cap rate, leverage works against you. At 7% mortgage rates, a 6% cap rate property will lose money with standard financing. You need either a higher cap rate property (7%+), a lower interest rate, or a larger down payment.

Cash-on-Cash Return vs. Cap Rate: What's the Difference?

These two metrics are frequently confused. Here's the clear distinction:

• Cap rate ignores financing entirely. It measures the property's income production relative to its value. It's the same whether you pay all cash or put 5% down.
• Cash-on-cash return includes financing. It measures your return on the actual cash you invested, accounting for mortgage payments.

Use cap rate to compare properties. Use cash-on-cash return to evaluate deals based on how you plan to finance them. A property with a mediocre cap rate can have an excellent cash-on-cash return with favorable financing — and vice versa.

Worked Example: Full Cash-on-Cash Calculation

Let's walk through a complete calculation step by step:

Property details:

• Purchase price: $240,000
• Down payment (25%): $60,000
• Closing costs: $4,500
• Minor repairs before renting: $3,500
• Total cash invested: $68,000

Income and expenses:

• Monthly rent: $1,900
• Vacancy (7%): -$133/month
• Operating expenses (property tax, insurance, maintenance, management, CapEx): -$798/month
• NOI: $969/month ($11,628/year)
• Mortgage ($180K at 7%, 30yr): $1,198/month ($14,376/year)

Annual cash flow: $11,628 - $14,376 = -$2,748

Cash-on-cash return: -$2,748 / $68,000 = -4.0%

This property is cash-flow negative. To make it work, you'd need to either negotiate a lower price, find a way to increase rent, or put more cash down. If rent were $2,200/month instead of $1,900, annual cash flow would flip to positive $840, yielding a 1.2% cash-on-cash return — still modest, but at least you're not losing money monthly.

Run your own numbers instantly with our rental property calculator. It calculates cash-on-cash return, cap rate, and monthly cash flow for any property. You can also use our mortgage calculator to model different financing scenarios, or explore how your savings would grow in alternative investments with our savings calculator.