Cap Rate / Cash-on-Cash Calculator

Type the property's purchase price, gross rent, vacancy, and operating expenses — then add a mortgage if you're financing it — and read the standard real-estate investment metrics off the result panel: NOI, cap rate, GRM, cash flow, cash-on-cash return, DSCR, debt yield, and break-even occupancy. All math runs in your browser — nothing is uploaded.

Property
Financing (optional) Click to add a mortgage. Leave collapsed for an all-cash purchase.
At a glance
Cap rate —
NOI —
Cash-on-cash —
Monthly cash flow —

Reference — what each metric means
NOI (Net Operating Income)
Effective Gross Income minus operating expenses. NOI excludes mortgage payments — those live below the NOI line.
Cap rate
NOI divided by purchase price, expressed as a percent. Lets you compare properties of different sizes and prices on a like-for-like basis. Typical residential: 4–8%. Commercial: 6–10%.
GRM (Gross Rent Multiplier)
Purchase price divided by gross annual rent. A quick screen for residential flips; under 10 is "good" in many markets. Doesn't account for expenses.
Cash-on-cash return
Annual pre-tax cash flow divided by the cash you put in (down payment + closing costs). Measures the return on the actual dollars you deployed — the leveragEd return.
DSCR (Debt Service Coverage Ratio)
NOI divided by annual debt service. Lenders typically want ≥ 1.20 for a rental loan. Below 1.00 means the property doesn't cover its own mortgage from operations.
Debt yield
NOI divided by loan amount, percent. A common commercial-lender metric independent of rate and amortisation; ≥ 8% is a typical threshold.
Break-even occupancy
The share of potential gross income you need to cover operating expenses and the mortgage. Below this, you're feeding the property out of pocket.