The fixed percentage commission model is the most common one used in the vacation rental market. In this model, the administrator earns a percentage of the total amount of the reservation - with or without deductions - or other amounts referring to the reservation. See the possibilities provided by the system:

From the total amount of the listing invoiceThe total amount of the daily rates and any listing fees form the total to be divided between you and your owners. Examples of fees: check-in in advance and late check-out charges or cleaning fees linked to the listing invoice.
From the night fee totalOnly the total daily rate amount is the basis for calculation.
With this, the charging of additional hosting fees, such as out-of-hours arrivals and departures, for example, won't be considered in the calculation.
From the total invoice amountThe owner will receive for all services commercialized during the stay. This will include the daily rates total (final version), future additional taxes and fees and extra services posted on the reservation page.