How a no-show differs from a cancellation
A cancellation is a guest telling you in advance, leaving you time to resell. A no-show is silence, and you only learn about it after midnight when the room has already sat empty all evening. The two must be recorded separately: cancellation rates say something about channel quality, while the no-show rate is the figure you use to size an overbooking limit.
Your limit comes from your own data
There is no universal number. No-show rates depend on channel, season, guest type and your own deposit policy. The right method is to record no-show rates per channel over several months, then overbook below that rate — never at it, because real distributions always contain nights when everyone turns up.
Not every night deserves the same limit
The night before a public holiday, a night with a large group, or a night when the whole area is full are nights to never overbook. The reason is practical: when it breaks you need another hotel of the same standard with rooms free, and on exactly those nights nobody has any.
Have the failure plan written down
If you choose to overbook, decide the bad-night procedure in advance rather than inventing it at two in the morning. Who gets moved first — usually a one-night stay booked through an intermediary, not a returning guest. Where they go, who covers the difference, what compensation applies, and who makes the apology call. Write it down and keep it where the night shift can open it.
The real cost of one failure
An empty room costs you one night of revenue. A guest turned away at midnight costs you that guest permanently, everyone they tell, and a public review every future guest will read. The overbooking decision always sits on that scale, not just on the monthly revenue sheet.
The technical precondition
Overbooking is only safe when your available-room count is real and updates instantly across every channel. If your website, your intermediaries and the desk's reservation book are three separate sources, you are already overbooking without knowing by how much. Two-way inventory sync comes first, before any deliberate overbooking.