Cash-on-Cash vs. Cap Rate, the Difference Investors Miss

Published June 19, 2026 · DSCRRadar

Cap rate and cash-on-cash return both measure rental profitability, and they’re constantly confused. The one-sentence difference: cap rate ignores your mortgage; cash-on-cash includes it.

Cap rate, the property’s yield

Cap rate = net operating income ÷ property value. It tells you the unlevered return, what you’d earn owning the place free and clear. It’s the right metric for comparing properties and markets on a level playing field.

Cash-on-cash, your actual return

Cash-on-cash = annual cash flow ÷ cash invested. It accounts for your down payment and financing. It’s the right metric for deciding whether a deal makes you money after the mortgage.

Why the gap matters in 2026

In a low-rate world, financing boosted returns and cash-on-cash often beat cap rate. In 2026’s higher-rate environment the opposite is common. A property with a healthy 6% cap rate can produce a negative cash-on-cash return once today’s mortgage is layered on with 25% down. The live Investor Yield Index shows the split plainly. Of the 18 metros tracked, none runs a positive cash-on-cash return at the mid-tier median price, and the leaders are simply the least negative. That’s the trap the Index is built to expose, and why it counts both metrics rather than cap rate alone.

Which to use?

Screening markets and comparing deals → cap rate
Deciding if your financed deal cash-flows → cash-on-cash
Qualifying for a DSCR loan → DSCR

Run all three on your exact numbers with the investment property calculator.

DSCR calculator → Cap rate calculator → Investor Yield Index →