Gross up platform payouts
Booking platforms usually pay out the guest’s booking value minus their commission and sometimes minus taxes or fees they collect. If you book only the net payout, your revenue is understated and your commission cost disappears. Record the gross booking value as income and the platform commission as an expense, so the bank deposit reconciles to the net figure.
Download the platform’s payout report each month. It lists each reservation, dates, gross amount, commission and payout. That report is your source document, and it should be attached to the deposit in the ledger.