Direct Answer
Airbnb cap rate measures annual net operating income relative to purchase price, before financing. Its best use is comparing similar properties under consistent revenue and expense assumptions.
Cap rate = annual net operating income / purchase price x 100
Worked Comparison Scenario
This hypothetical scenario illustrates the formula; it is not an expected market result. Property A costs $400,000, produces $60,000 in modeled annual gross revenue, and has $30,000 in annual operating expenses before debt service.
If a similar Property B costs $350,000 and produces $24,500 in NOI, its cap rate is 7.0%. Property A has the higher modeled cap rate, but that does not automatically make it the better deal. Verify that both NOI estimates use comparable seasonality, management, maintenance, taxes, insurance, and replacement assumptions.
What Belongs in NOI
Start with annual booking revenue and subtract the costs required to operate the property: platform fees, cleaning not recovered from guests, management, utilities, supplies, insurance, property tax, maintenance, and recurring permits or HOA costs. Keep mortgage payments out of NOI so financing does not distort the property comparison.
How to Interpret the Result
Compare cap rates only after normalizing the assumptions. A higher result can reflect a better price-to-income relationship, or it can hide weaker demand, regulation risk, deferred repairs, or optimistic revenue. Stress-test NOI and review break-even occupancy before deciding.
Cap rate does not tell you what your invested cash earns. Once financing and upfront cash are added, use annual cash flow and cash-on-cash return as part of the complete deal analysis.
Compare the whole deal
Model cap rate with your revenue and expense assumptions, then review financing and break-even risk.