What cash-on-cash measures
Cash-on-cash divides year-one pre-tax cash flow by the total cash you put into the deal. It answers one question: what does the money in my pocket earn in the first year. Unlike cap rate, it includes financing, which is why two investors buying the same building at the same price can report very different returns.
Count every dollar of the equity check
The most common error is understating the denominator. Total cash invested is not just the down payment. It includes closing costs, loan fees and points, upfront capital expenditure, lender reserves, and working capital. Leaving out a $400,000 renovation budget on a $2,100,000 equity check overstates the return by roughly a quarter.
Why it looks worse in 2026, and why that is honest
At 5.30% agency debt, debt service consumes far more of NOI than it did at 3.5%. A deal that produced 8% cash-on-cash in 2021 at the same purchase price and NOI produces materially less today, and the difference is entirely financing. Investors underwriting to a 2021 cash-on-cash target in a 2026 rate environment are usually solving for the answer by inflating rent growth instead.
What the number hides
- It is year one only. A value-add deal with a low year-one figure and a credible path to 9% by year three is often a better investment than a flat 6% forever.
- It ignores principal paydown. Amortization builds equity every month and never appears in this metric.
- It ignores appreciation and the exit. IRR captures the full hold period and the sale. Cash-on-cash captures neither.
- It is sensitive to leverage. More debt raises cash-on-cash while raising risk. Read it alongside DSCR, never on its own.
Use it with two other numbers
Cash-on-cash tells you what you earn now. DSCR tells you whether the lender will fund it and whether the cash flow survives a downturn. IRR tells you what the whole hold period returns. A deal needs an acceptable answer on all three, and the metrics disagree often enough that checking only one is how investors talk themselves into bad deals.