Cash-on-Cash Return

How the calculation runs

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

The numerator is net operating income minus annual debt service — what actually lands in your account after the lender is paid. The denominator is every dollar you wrote a check for: down payment, closing costs, loan fees, due diligence, and any reserves the lender required you to fund at closing. Not the purchase price. Not the loan amount. Your cash.

That is the whole difference between this number and cap rate. Cap rate deliberately ignores your loan so buyers can compare buildings. Cash-on-cash deliberately includes it, because you are not comparing buildings any more — you are asking what this particular deal, with this particular loan, pays you this year.

The same building, two versions of the income

Take a 24-unit apartment property priced at $3,200,000. The buyer borrows $2,080,000 (65% loan-to-value) at 6.75% on a 30-year amortization, which works out to about $161,890 of annual debt service. Between the down payment, closing costs, and reserves, $1,200,000 of cash goes into the deal. Now run two versions of the income.

Version A — NOI of $208,000

• Cap rate — $208,000 ÷ $3,200,000 = 6.5%
• Cash flow after debt service — $208,000 − $161,890 = $46,110
• Cash-on-cash return — $46,110 ÷ $1,200,000 = 3.84%

Version B — NOI of $272,000

• Cap rate — $272,000 ÷ $3,200,000 = 8.5%
• Cash flow after debt service — $272,000 − $161,890 = $110,110
• Cash-on-cash return — $110,110 ÷ $1,200,000 = 9.18%

Same price, same loan, same cash in. In Version A the cash-on-cash return lands well below the cap rate. In Version B it lands above it. The dividing line is the loan constant — annual debt service divided by loan amount, or $161,890 ÷ $2,080,000 = 7.78%. When the cap rate beats 7.78%, borrowing lifts your return. When it does not, every extra dollar of debt drags the return down. Test your own version in the cash-on-cash calculator.

What it means for you

Version A is the situation a lot of buyers walked into over the last few years, and it is not automatically a mistake. A 3.84% first-year return can still be the right trade if rents are below market and you have a credible plan to move NOI. But it should be a decision, not a surprise — and it means your return depends on execution and exit, not on the current income.

The lever you control most directly is the loan constant, and that is set by rate, amortization, and interest-only period, not by the property. A 30-year amortization instead of 25 lowers the constant. Two years of interest-only lowers it further while you stabilize. Before you model anything, look at where current CRE loan rates sit, then bring your numbers to a commercial real estate loan application so you are working from a real structure instead of an assumed one.

What to watch for

• Year one is not the whole hold. Cash-on-cash is a single-year snapshot. It says nothing about rent growth, principal paydown, or the sale. A deal with a poor first-year figure and a strong exit can beat a deal that pays well from day one.
• Interest-only flatters it, then ends. During an interest-only period, debt service is lower and cash-on-cash looks strong. When amortization begins, the payment jumps and the return drops. Model the post-IO year before you commit.
• Count every dollar in the denominator. Leaving out closing costs, lender legal fees, or funded reserves shrinks the denominator and overstates the return. Loan costs on commercial deals routinely run 2–4% of the loan amount.
• It ignores principal paydown and appreciation. Each payment builds equity you cannot spend. Cash-on-cash counts only spendable cash, so it understates total return on an amortizing loan.
• Floating-rate debt makes it a moving target. If your rate resets, so does your cash-on-cash return. Run the calculation at the rate cap, not just at today's rate.

What is a good cash-on-cash return?

Expectations vary widely by strategy and rate environment. Stabilized properties with long-term fixed debt commonly target something in the 5–8% range, while value-add deals often accept a low or even negative first year in exchange for a much larger figure once rents are repositioned. What matters is whether the return compensates you for the risk and the work, not whether it clears a fixed threshold.

Is cash-on-cash return the same as cap rate?

No. Cap rate divides NOI by the purchase price and assumes no loan. Cash-on-cash divides cash flow after debt service by the cash you invested. On the same building, a 6.5% cap rate can produce a 3.84% cash-on-cash return with expensive debt, or a figure well above the cap rate when the income comfortably exceeds the cost of the loan.

Does cash-on-cash return include principal paydown?

No. Only cash you can actually take out of the deal counts. The portion of each payment that reduces your loan balance builds equity, but it is not distributable, so it sits outside this calculation. Equity multiple and internal rate of return are the measures that eventually pick it up, because both capture what you receive at sale.