What Is an Attrition Clause in a Hotel Block?

An attrition clause is a provision in a hotel room block contract that obligates you to fill a minimum percentage of reserved rooms. If your guests do not book enough rooms to meet that threshold by the cutoff date, you pay a financial penalty covering the hotel's lost revenue on the unused rooms. Most contracts set the minimum between 75 and 90 percent of the total block.

How an Attrition Clause Works

When you sign a contracted room block agreement with a hotel, the property sets aside a specific number of rooms at a negotiated rate. In return, the hotel expects a certain level of occupancy. The attrition clause defines that expectation in writing. It states a minimum fill rate, usually expressed as a percentage, and outlines the financial consequences if bookings fall short.

The clause works in tandem with your room block cutoff date. Once the cutoff date passes, the hotel counts the rooms that were actually booked. If the number falls below the contractual minimum, the attrition penalty is triggered. The hotel then invoices you for the difference between the required minimum and the actual number of rooms filled.

Why the Attrition Clause Matters for Weddings

Wedding room blocks often involve 10 to 50 or more rooms across one or two nights. That represents significant revenue for the hotel. The attrition clause protects the property from holding inventory that ultimately goes unsold. For you, it represents a potential financial liability that can range from a few hundred dollars to several thousand.

Understanding the clause before you sign gives you the chance to right-size your block. Overestimating how many guests will book rooms is the most common reason couples face attrition charges. A realistic headcount, informed by guest travel patterns and your venue location, reduces the risk of paying for rooms nobody uses.

Common Attrition Rates and Penalty Structures

Hotels structure attrition penalties in several ways:

Percentage-based threshold. The most common format. You must fill 80 percent (or another agreed figure) of your block. Penalties apply only to the gap between the threshold and actual bookings, not to every unfilled room.
Revenue-based calculation. The penalty equals the lost room revenue on each unfilled room below the threshold. Some contracts also factor in taxes, resort fees, or estimated ancillary spending.
Sliding scale. A small number of hotels use tiered penalties: a lower charge if you fill 70 to 79 percent, a higher charge if you fall below 70 percent.
Resell credit. Some contracts include a clause stating that if the hotel resells an attrition room to a walk-in guest, that room no longer counts against your shortfall.

Always ask the hotel to clarify exactly which charges are included in the penalty calculation before you finalize the agreement.

Tips for Negotiating a Favorable Attrition Clause

You have more leverage than you might expect, especially during off-peak seasons or at hotels eager to host wedding groups. Consider these strategies:

Lower the threshold. Ask the hotel to reduce the required fill rate from 80 percent to 70 percent. Even a small reduction can save you hundreds of dollars if a handful of guests change plans.
Request a review date. A review date, set two to four weeks before the cutoff, lets you release unbooked rooms back to the hotel without penalty. This gives the property time to resell them on the open market.
Add a resell credit. Insist on language that credits resold rooms against your attrition count. If the hotel fills those rooms with other travelers, your liability decreases accordingly.
Start with a smaller block. It is easier to add rooms later than to pay for rooms you do not need. Many hotels allow you to expand a block if demand is strong, so beginning conservatively is a sound approach.
Share your booking link early. The sooner guests reserve, the sooner you have accurate pickup data. Coordinating room blocks through a centralized booking tool helps you track reservations and act before the cutoff date arrives.

Attrition vs. Cancellation: Key Differences

It is important to distinguish attrition from outright cancellation. Attrition deals with a shortfall in bookings within a block you maintain. Cancellation clauses apply when you cancel the entire block or event. Cancellation penalties are typically steeper, sometimes calculated as a percentage of the total estimated revenue from rooms, food and beverage, and meeting space combined.

Review both clauses carefully. If circumstances change and you need to cancel, understanding the difference helps you choose the least costly path forward, whether that means reducing the block size or canceling outright.

Frequently Asked
Questions

What is a typical attrition rate in a hotel block?

Most hotels set attrition rates between 75 and 90 percent. That means you must fill at least 75 to 90 percent of the rooms in your block or pay a penalty on the unfilled portion. A rate of 80 percent is the most common threshold in wedding hotel contracts.

How is the attrition penalty calculated?

The hotel multiplies the number of rooms that fell below the minimum commitment by the negotiated room rate. Some contracts add taxes and resort fees to that calculation. For example, if your block includes 30 rooms at $200 per night and you must fill 80 percent, falling to 20 rooms means you owe a penalty on 4 rooms (24 minus 20), which totals $800 before taxes.

Can you negotiate the attrition clause?

Yes. You can ask the hotel to lower the required fill percentage, extend the cutoff date, add a review window so you can release rooms before penalties apply, or include a clause that credits any rooms the hotel resells to walk-in guests against your attrition penalty.

What happens if you do not meet the attrition requirement?

The hotel invoices you for the shortfall after the event. Depending on the contract, the charge may cover room revenue only or may also include estimated food, beverage, and ancillary revenue the hotel expected from those guests. Reviewing the contract language before signing helps you understand your maximum financial exposure.

Is an attrition clause the same as a cancellation clause?

No. An attrition clause covers rooms that remain unbooked within a block you keep. A cancellation clause applies when you cancel the entire block or event. Cancellation penalties are typically higher and may include charges for lost food and beverage revenue, meeting space, and other contracted services.

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