When a hotel "holds" money on your credit or debit card at check-in, it is officially called a Pre-Authorization (or an "incidental hold"). This is not an actual charge, but a temporary "block" on your available credit to ensure you have enough funds to cover the room balance plus potential "incidentals" like room service, mini-bar usage, or accidental damage. The amount typically ranges from $50 to $200 per night. While the hotel "releases" this hold immediately upon checkout, it can take your bank anywhere from 3 to 10 business days to actually reflect that the money is available again in your account. Using a debit card for this is generally discouraged because the bank treats the hold as a "pending withdrawal," meaning that money is physically unavailable for you to spend at the grocery store or gas station until the hold expires, which can be a major inconvenience during a trip.