How do you split a hotel room fairly?
Split each room’s cost among the people who slept in it, night by night, then add each person’s own charges. If everyone stays every night, divide the room total by its occupants. If someone leaves early, the people still in the room split the later nights without them.
Here is how that plays out in the worked example below. Six friends share two rooms for four nights. The suite costs $400 a night, and the standard room costs $200. One friend leaves after two nights. Room service and the minibar add $165, for a $2,565 bill.
An even split charges everyone $427.50. The fair split charges the early leaver $133.33. Each suite guest pays $573.33, room service included. The suite guests pay the most: their room costs twice as much, and they shared the room service. The even split makes the early leaver overpay by $294.17, more than double their fair share.
The three fair formulas, from simplest to most complete:
The math is the easy part. Each formula answers one question: when a bed sits empty, who pays for it? The standard room still costs $200 a night after Frankie leaves, so someone does. In the worked example the choice moves $133.33. Under nights booked, Frankie pays it. Under nights stayed, Drew and Ellis split it. Pick who before anyone books, while nobody knows who will leave early. Then tell the front desk at check-in, because that is when charges start landing on the booking card. Leave it to checkout and the default decides, against whoever left first.