Cash on Cash Return Calculator (CoC)

The Cash-on-Cash Return (CoC) Calculator measures the annual pre-tax cash flow from a real estate investment as a percentage of the cash you actually put in. Unlike the cap rate — which ignores financing — cash-on-cash return includes the effect of debt service. It answers the question: "How much cash am I getting back each year on the cash I invested?"

Cash-on-cash is most useful for leveraged investments, where financing dramatically changes actual returns. Two properties with identical cap rates can have very different CoC returns depending on LTV, interest rate, and loan term. An investor who puts 25% down at 7% interest gets a very different result than an all-cash buyer — even on the same property.

When investors use cash-on-cash return:

• Acquisition underwriting: Before making an offer, investors model projected cash-on-cash return at various financing scenarios to ensure the deal generates acceptable current yield.
• Portfolio comparison: Comparing the actual cash yield across multiple properties in a portfolio to identify where capital is most and least efficiently deployed.
• Annual performance tracking: Measuring whether a property's actual performance matches the underwriting assumptions made at acquisition.
• Financing optimization: Modeling how different LTV ratios, interest rates, and loan terms affect the cash yield on invested equity.

What counts as a solid cash-on-cash return depends on your alternatives and the property's risk; a low figure means the investment is generating little current yield and is likely relying on appreciation. The Federal Reserve's H.15 release provides the risk-free rate context for evaluating whether your cash yield adequately compensates for real estate's illiquidity and management burden.

The formula needs two precise inputs: annual pre-tax cash flow (NOI minus all debt service) and total cash invested (every out-of-pocket cost, not just the down payment).

Positive vs. Negative Leverage: In the example, the cap rate is 7.0% and the mortgage rate is 7.0% — neutral leverage. Cash flow barely breaks positive because the full NOI goes to debt service. At a 6.5% cap rate with a 7.0% mortgage rate, you have negative leverage — debt costs more than the property yields, so financing reduces rather than amplifies returns. The SBA recommends stress-testing leveraged investments at 1–2% higher rates.

1. Start with NOI from the Cap Rate Calculator. Accurate NOI is the foundation of both calculations. Calculate it from gross scheduled income, minus vacancy, minus all operating expenses. Example: a 6-unit building with $72,000 gross rents, 5% vacancy ($3,600), and $24,480 in expenses produces NOI of $43,920.
2. Determine annual debt service. Monthly P&I × 12. For a $350,000 mortgage at 7.0% over 30 years: $2,329/month × 12 = $27,948/year. Include only P&I — taxes and insurance are already in operating expenses.
3. Calculate annual pre-tax cash flow. $43,920 NOI − $27,948 debt service = $15,972 annual cash flow — the actual cash the property produces before income taxes.
4. Calculate total cash invested. Add every out-of-pocket cost: down payment ($112,500 = 25% of $450,000) + closing costs ($11,250, ~2.5%) + repairs ($18,000) + origination fees ($2,700) + initial reserves ($5,000) = $149,450.
5. Divide cash flow by cash invested. $15,972 ÷ $149,450 = 10.7% CoC return.
6. Stress test with vacancy and rate scenarios. At 10% vacancy instead of 5%: income drops $3,600 → NOI $40,320 → cash flow $12,372 → CoC 8.3%. Still acceptable. At 8% interest on refinance: monthly P&I $2,567 → annual service $30,804 → cash flow $9,116 → CoC 6.1%. This reveals how much rate sensitivity you are carrying.

Read CoC return in three contexts: against alternative investments, against the property's risk profile, and against your long-term goals.

Benchmarking against alternatives: Compare your cash-on-cash return with what you could earn on Treasuries, high-yield savings and a diversified stock portfolio. A 5% CoC return barely beats risk-free savings — it needs to be justified by appreciation or tax benefits. At 10%, real estate meaningfully outperforms fixed income on current yield while offering inflation protection and appreciation upside.

Cash flow positive vs. negative: Above 0% means rent covers all expenses and debt service. Below 0% means you are subsidizing the property out of pocket each month — called an "alligator" in investor slang. This can work in strong appreciation markets (San Francisco, Manhattan) where total return justifies the negative carry, but it requires a disciplined exit plan.

Market context (2026): According to ATTOM's 2026 Single-Family Rental Market report, the strongest projected rental yields cluster in Midwest and Rust Belt counties — St. Clair County, IL (14.5%), Mobile County, AL (13.6%), Peoria County, IL (12.5%), and Trumbull County, OH (11.5%) — while high-cost gateway metros like New York, Los Angeles, and San Francisco post the lowest yields, with investors there primarily underwriting appreciation rather than current cash flow. ATTOM's analysis also found potential yields declining from 2025 to 2026 in 54.8% of the counties it analysed, so these figures should be treated as directional, not guaranteed.

Total return perspective: CoC covers only the current income component. Total return also includes appreciation, principal paydown (1–3% of property value annually depending on amortization stage), and tax benefits from depreciation (see IRS Publication 946). A property with 5% CoC, 4% appreciation, and 2% paydown generates 11% total return — competitive with equity markets.

• Raise income before closing when possible. If you are buying below-market rents, the value-add opportunity is real. Each $100/month increase across a 6-unit building adds $7,200/year to NOI — improving CoC by roughly 0.5–1.0 points depending on cash invested. Negotiate early access to show units and start leasing before you close.
• Optimize your financing structure. More equity down = lower debt service, less leverage. Less equity down = higher debt service but higher CoC if leverage is positive. In a 7% cap rate / 6.5% mortgage rate environment, positive leverage exists — each dollar of debt at 6.5% earns 7.0% in the property, a 0.5% spread. Don't over-leverage: if rates rise above the cap rate, adding debt destroys current yield.
• Cut operating expenses through proactive management. Property management fees are the largest controllable cost for most landlords. Self-managing a 6-unit building instead of paying 10% management saves $7,200/year on $72,000 gross income — adding 4.8 percentage points to CoC on a $150,000 equity investment. Weigh this against your time and the real opportunity cost of active management.
• Use interest-only loans during value-add periods. During renovation or lease-up, interest-only (IO) loans cut monthly payments and temporarily improve CoC while you build income. Once stabilized, refinance into an amortizing loan. IO loans are mainly available through commercial and portfolio lenders, not conventional residential financing.
• Factor in tax benefits for after-tax CoC. Depreciation deductions offset rental income. A $400,000 residential property has roughly $290,909 in depreciable basis (excluding ~27% land value) over 27.5 years = $10,579/year in deductions. In the 22% bracket, that saves $2,327 in federal taxes annually — adding 1.6 points to after-tax CoC on a $150,000 investment. See IRS Publication 527 for residential rental tax rules.
• Track CoC annually against your acquisition model. Many investors underwrite 9% CoC and find they are generating 6% due to higher vacancies, unexpected repairs, or management costs running over. Annual tracking shows which assumptions were wrong and sharpens your underwriting on future deals.

Cash on cash yield is simply another name for cash-on-cash return — investors use "yield" and "return" interchangeably here, and some listing sites quote the same figure as "cash yield" or "CoC." Whatever the label, the CoC formula is:

Worked example. You buy a $300,000 rental with 25% down ($75,000), pay $6,000 in closing costs, and put $9,000 into make-ready repairs — $90,000 of cash in the deal. The property rents for $2,400/month; after vacancy, operating expenses, and the mortgage payment, $520/month is left over.

Three things to keep straight when you calculate cash on cash yield:

1. It measures cash, not wealth. Principal paydown and appreciation are excluded on purpose. A property can show a modest 4% cash yield while building equity much faster — CoC only tells you what the deal pays you to hold it this year.
2. It is levered — cap rate is not. Cap rate ignores your mortgage; cash on cash yield is calculated after debt service. That's why the same property shows a different cap rate and CoC, and why leverage can push cash yield above or below the cap rate depending on your interest rate. Compare both with our cap rate calculator.
3. Use pre-tax figures consistently. The standard convention is pre-tax cash flow. Mixing an after-tax cash flow number into the CoC formula makes your deal incomparable to every published benchmark.

Most buy-and-hold investors screen for a cash on cash yield in the 6–10% range at today's rates; house hackers and appreciation-focused buyers in strong markets often accept less. Run your own numbers in the calculator above — it applies this exact formula to your down payment, financing, and rent figures.