Attrition

What is attrition in a hotel contract?

Attrition is the penalty a hotel charges when a group uses fewer room nights than its contract committed to. The contract sets a pickup floor, often 80% of the block, and the group pays on any shortfall below it, usually at or near the group rate. Contracts measure attrition either cumulatively across the whole stay or night by night, and per-night is the stricter of the two.

How is an attrition penalty calculated?

Four numbers decide it: the room nights you committed, your pickup floor, the room nights you actually picked up, and the rate the hotel bills the shortfall at. Multiply committed room nights by the floor to get the minimum you must fill. Subtract actual pickup. Multiply the gap by the rate.

Take a fictional three-night block at the Meridian: 100 rooms a night, so 300 room nights committed, with an 80% floor and a $189 group rate. The floor is 240 room nights. The group picks up 210, which is 30 short, so a cumulative clause bills 30 × $189 = $5,670.

Measured per night, the same pickup costs more. The peak night fills all 100 rooms, but the two shoulder nights fill only 55 each. Each night has its own floor of 80, and the 20 spare rooms on the peak night cannot cover the shoulders.

The same fictional block used in the attrition guide, measured per night: 300 room nights, an 80% floor, a $189 group rate.
NightBlockedFloor (80%)Picked upShortfallExposure @ $189
Night 1 (shoulder)100805525$4,725
Night 2 (peak)100801000$0
Night 3 (shoulder)100805525$4,725
Total30024021050$9,450

Cumulative or per-night attrition: which does my contract mean?

Read the clause for the word that names the basis. Cumulative (sometimes "aggregate" or "total room nights") adds every picked-up room night across the stay and compares the total with the floor once, so a strong peak night carries a soft shoulder. Per night (sometimes "on a nightly basis") gives each date its own floor, and a surplus on one night never offsets a shortfall on another.

In the example above, that one word is the difference between $5,670 and $9,450 on identical pickup. If the clause does not say, ask the hotel to write the basis in before you sign rather than assuming it.

What is a typical attrition percentage?

Many contracts start at an 80% floor, which lets the group miss 20% of its committed room nights without penalty. A lower floor is better for the group. Groups with uncertain attendance often push for 70% or 75%, or for a floor that steps down through a rolling release schedule.

The rate the shortfall is billed at matters as much as the percentage. Some contracts bill the full group rate; a negotiated clause can bill lost profit instead, often around 75% of the rate, because the hotel saves housekeeping and other costs on a room it never turns over.

Is attrition measured at the cutoff date?

Usually not. The cutoff date is the deadline for the rooming list, after which unbooked rooms go back to the hotel. Attrition is typically measured at performance: the room nights actually used during the stay. A missed cutoff and an attrition shortfall are two different bills, so treat them as two deadlines.

How do you reduce attrition exposure?

Most of the protection is set on paper before you sign. The rest is acting early enough that the hotel can still resell what you will not use.

  • Block the shape of your real demand, night by night, instead of the same number every night.
  • Negotiate a lower floor and a cumulative basis.
  • Ask for a rolling release schedule, so rooms you will not fill go back at 90, 60 or 30 days without penalty.
  • Ask for credit on rooms the hotel resells, and for a lost-profit rate on the shortfall.
  • Get force majeure language that names the events it covers.
  • Push guest names in before the cutoff: every confirmed name is a room night counted toward the floor.
  • Track pickup per night, not as one blended percentage.

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Attrition: common questions

The questions people ask most about attrition, answered.

What does attrition mean in a hotel contract?
Attrition is what a group owes when it uses fewer room nights than it committed to. The contract sets a minimum share of the block the group must fill, often 80%, and the hotel bills the shortfall below that floor, usually at or near the group rate. It is the cost of holding rooms the group never filled.
What does 80% attrition mean?
It means the group must use at least 80% of the room nights it committed to, so up to 20% can go unused without penalty. On a block of 300 room nights the floor is 240. Pick up 210 and the group owes on the 30 room nights below the floor. Whether the floor applies to the whole stay or to each night separately depends on the contract.
How is room block attrition calculated?
Multiply the committed room nights by the attrition floor, subtract the room nights actually picked up, and multiply any shortfall by the rate in the contract. Under a per-night clause, do that for each night separately and add the shortfalls, because extra pickup on one night does not cover a short night.
Is attrition the same as a cancellation fee?
No. Attrition applies when the event goes ahead but the group fills fewer rooms than it committed to. A cancellation fee applies when the group cancels the whole event, and is usually set on a sliding scale by how close to arrival the cancellation comes. A hotel contract normally has a separate clause for each.
Can you negotiate attrition with a hotel?
Yes, and the clause is one of the most negotiable parts of a group contract. The usual asks are a lower floor, a cumulative rather than per-night basis, a rolling schedule for releasing rooms, credit for rooms the hotel resells, and a lost-profit rate instead of the full rate on any shortfall. This is business guidance, not legal advice.

Have more questions? Check our glossary of terms or get in touch.

Stop tracking attrition by hand

Blocks tracks attrition on the block it belongs to, beside every deadline and room night, and proposes the next step for you to review — so the busy work is handled, and nothing changes until you confirm.