Cash-on-Cash Return

Cash-on-cash return (CoC) measures the annual pre-tax cash flow a property generates relative to the actual cash you invested. The formula is: CoC = (NOI − Annual Debt Service) ÷ Total Cash Invested. NOI is rent minus operating expenses (taxes, insurance, repairs, management, vacancy). Debt service is the full annual mortgage payment (principal + interest), and total cash invested is your down payment plus closing costs plus any upfront capex.

CoC matters more than cap rate for most rental investors because it includes the loan. Two properties with identical 7% cap rates can produce very different cash-on-cash returns once you layer in 75% leverage at different interest rates. CoC tells you what your equity check actually earns in year one — the same metric you'd compare against a stock-market dividend yield or bond coupon.

Note that CoC is a snapshot, not a total return. It deliberately ignores principal paydown, appreciation, and depreciation tax benefits. Investors usually pair it with IRR (which accounts for those over a hold period) or with a simple equity multiple to see the long-game picture.

Suppose you buy a four-unit rental for $750,000. After expenses, NOI is $54,000/year. You put 25% down ($187,500) plus $12,500 in closing costs and $25,000 in immediate repairs, so total cash invested is $225,000. Your loan is $562,500 at 7.0% over 30 years — annual debt service is roughly $44,900.

Annual cash flow = $54,000 − $44,900 = $9,100. Cash-on-cash return = $9,100 ÷ $225,000 = 4.04%. That's below the typical 8–10% target most buy-and-hold investors look for, suggesting either rents need to grow, expenses need trimming, or the purchase price is too high for current rates.

Re-running with 30% down on a 6.0% loan: cash invested rises to $250,000, debt service drops to about $40,400, cash flow rises to $13,600, and CoC becomes 5.4%. Still below target — this is the math behind why higher rates have crushed leveraged deal volume.

Stabilized long-term rentals: 8–12% is the traditional target. Below 6% usually means the deal depends on appreciation rather than cash flow.

Value-add and BRRRR deals: 12–20%+ once stabilized — but with execution risk during the renovation period.

Short-term and mid-term rentals: 15–25% is achievable in strong markets, offset by higher operational complexity and revenue volatility.

Class-A multifamily and trophy assets: 4–6% is common; investors accept lower current return for institutional-grade tenants and easier financing.

Negative CoC happens in expensive coastal markets (Bay Area, NYC, Vancouver) where buyers underwrite to appreciation, not cash flow. Acceptable only if you have the runway and the conviction.

Tax benefits — depreciation alone often shelters all reported cash flow on a leveraged rental. Consult a CPA for after-tax returns.

Principal paydown — your loan balance shrinks each month, building equity invisible to CoC. On a 30-year mortgage, year-1 paydown is small but compounds.

Appreciation — the biggest long-term wealth driver in most markets. CoC is a current-yield metric only.

Reserves — a healthy underwriting model adds 5–10% to cash invested for capex and emergency reserves you'll likely need within 24 months.

Refinances — if you plan to pull cash out in year 3, your effective CoC on remaining equity changes dramatically. Model that with IRR, not CoC.