Build the booked month
Occupied nights come from availability and occupancy. Average stay converts those nights into estimated bookings, which drive cleaning-fee revenue and cleaning expense.
Short-term rental underwriting
Airbnb Calculator
Model an average month of occupied nights, guest revenue, operating costs, financing, and cash flow for a short-term rental.
Decision question
What could a modeled month leave after operating costs and debt service?
This calculator provides estimates for planning and comparison, not financial, tax, investment, or lending advice.
Operating memo
Turn an average booked month into an operating estimate
Start with available nights, occupancy, rate, and average stay. Then separate guest revenue, recurring operating costs, and financing so each part of the scenario remains visible.
Primary formula
Monthly Cash Flow = Gross Revenue − Operating Expenses − Mortgage Payment
Annual NOI and cash flow are the modeled monthly results × 12. This is an average-month extrapolation, not a month-by-month forecast, and it does not model seasonality.
Keep NOI before financing
Gross revenue less operating expenses produces monthly NOI. The mortgage payment is excluded from NOI and subtracted separately to reach monthly cash flow.
Interpret annualized returns carefully
Cap rate compares annualized NOI with purchase price. Cash-on-cash return compares annualized cash flow with upfront cash invested. Neither result predicts seasonal demand, regulation changes, or costs that were not entered.
Questions
About the Airbnb Calculator
Occupied nights equal available nights multiplied by occupancy. The calculator multiplies occupied nights by the average nightly rate, adds cleaning fees for estimated bookings, and includes other monthly income.
Annual NOI and annual cash flow equal the modeled monthly amounts multiplied by 12. Cap rate and cash-on-cash return use those annualized figures. The calculator does not model month-by-month seasonality, so the average-month assumptions need to represent the scenario you want to test.
No. Monthly NOI subtracts platform fees, management, cleaning, taxes, insurance, utilities, maintenance, supplies, HOA fees, and other operating expenses from gross revenue. The mortgage payment is subtracted afterward to estimate cash flow.
It is the lowest modeled occupancy from 0% through 100% at which monthly cash flow is no longer negative. It is unavailable when the entered revenue and cost assumptions do not reach non-negative cash flow even at 100% occupancy.
Cash-on-cash return is unavailable when initial cash investment is zero, because annual cash flow cannot be divided by zero. Initial cash investment includes the down payment, closing costs, and entered repairs and furnishing.