Booking.com charges commission on confirmed stays and cancellations of non-refundable bookings*.
Remember to always let us know about any other kinds of cancellations, including guest no-shows, so an invoice isn’t generated and you’re not charged commission.
If you’re looking for more info about cancellations, you can read this article: Can I cancel a reservation?
*Note: This is a modification we’re in the process of making for non-refundable reservations where guests are charged a cancellation fee. If partners want to waive these fees for guests, we'll waive the commission, too.
We’re currently communicating this modification to partners in stages. Check your Extranet inbox to see if it applies to your property yet. If you haven’t received confirmation of this modification yet, we'll let you know before the modification takes effect.