Cash-on-Cash Return

Cash-on-cash return is a simple calculation that measures the annual pre-tax cash income from an investment divided by the total cash invested, expressed as a percentage. In mortgage note investing, it is the most widely used metric for pricing performing loans and re-performing loans because it translates monthly payment data directly into a yield figure that drives purchase price decisions. Unlike metrics that account for the time value of money or terminal value, cash-on-cash return answers a single, practical question: what percentage of my invested dollars come back as cash each year?

The Formula

The core formula has three inputs:

Cash-on-Cash Return = (Annual Net Cash Income) / (Total Cash Invested) x 100

For mortgage note investors, the inputs are:

Annual net cash income = (Monthly Payment - Servicing Fee) x 12

Pricing Notes with Cash-on-Cash Return

The real power of cash-on-cash return for note investors is that the formula works in reverse. Instead of knowing the price and solving for the yield, you set your target yield and solve for the maximum price you can pay:

Maximum Purchase Price = ((Monthly Payment - Servicing Fee) x 12) / Target Cash-on-Cash Return

Worked Example

Consider a re-performing first lien with a $681 monthly payment, a $20 servicing fee, and an unpaid principal balance (UPB) of $87,000:

Higher target returns produce lower maximum purchase prices. The percentage of UPB that each price represents is a useful sanity check — if your formula returns a price above 100% of UPB, you would be overpaying, since the borrower will never owe more than the remaining balance.

Cash-on-Cash Return vs. Other Metrics

Cash-on-cash return is intentionally simple, which is both its strength and its limitation. It does not account for the time value of money, the total return over the life of the loan, or the risk of early payoff. Investors should understand how it compares to other return metrics:

A loan with a 24% year-one cash-on-cash return looks outstanding on paper. But if the borrower pays off the loan halfway through year two, the actual annualized return may be significantly lower. This is why experienced note investors use cash-on-cash return as a pricing tool to set maximum bid prices, then model the full investment using IRR or total ROI before committing capital.

Practical Guardrails

• Cap your bid at UPB. Never pay more than the unpaid principal balance regardless of what the cash-on-cash formula suggests. Small-balance, high-rate loans can produce prices that exceed UPB — a guaranteed path to loss.
• Account for servicing costs. Ignoring the monthly servicing fee inflates your projected return and can lead to overpaying. Always net out servicing before calculating yield.
• Adjust targets for risk. Higher-risk assets — junior liens, recently modified loans, borrowers with weak credit history — demand higher target cash-on-cash returns to compensate for the elevated probability of re-default or payoff delays.
• Use for performing assets only. Cash-on-cash return requires an active payment stream. For non-performing loans, pricing should be based on property value and projected resolution outcomes rather than cash flow that does not yet exist.