Understanding Credit Card Pre-Authorization in Laundromats

As more laundromats adopt pay-at-the-machine credit and debit card options, operators are often introduced to a term that can raise questions: pre-authorization, sometimes called an authorization hold.

While the concept may seem unfamiliar at first, it plays a critical role in making credit card payments practical and sustainable in a self-service laundry environment.

Why Pre-Authorization Exists

Credit card payments at washers and dryers offer tremendous convenience for customers. Being able to tap or swipe a card directly at the machine removes friction and eliminates the need to preload value.

The challenge lies in the size of the transactions.

In many laundromats, individual machine starts—especially dryers—can be very small. A 25-cent dryer start, for example, becomes problematic when processed as a standalone credit card transaction. Once processing fees and transaction costs are applied, the operator can actually lose money on that vend.

How Authorization Holds Work

To solve this, pay-at-the-machine systems use an authorization hold strategy.

When a customer uses their credit or debit card for the first time during a visit, the system places a temporary hold on the card for a dollar amount determined by the store owner. This amount is not the final charge.

As the customer continues to use machines throughout their visit, all activity is tracked. Once they finish and leave the store, the system calculates what was actually spent and settles the transaction for that exact amount. The remaining portion of the hold is released.

This approach is widely used in other industries. Gas stations, for example, place a hold before fueling because they don’t know how much fuel will be pumped in advance. The final charge is settled after the transaction is complete.

Balancing Fees and Customer Experience

The effectiveness of pre-authorization comes down to setting the right hold amount.

A higher authorization amount reduces overall transaction costs and lowers the effective processing rate. However, it can also increase the likelihood of customer questions or pushback when they see a larger temporary hold on their account.

A lower authorization amount minimizes customer concern but increases transaction fees, which can erode profitability.

Finding the right balance is critical. The goal is to strike a point where processing costs are controlled while maintaining a smooth, predictable experience for customers.

A Necessary Tool for Pay-at-the-Machine Systems

Pre-authorization isn’t a penalty or an extra charge—it’s a practical mechanism that makes small, frequent credit card transactions viable in a laundromat setting.

When configured correctly, it protects margins, reduces processing fees, and allows operators to offer the convenience customers increasingly expect without sacrificing profitability.

About CCI

For more than 25 years, Card Concepts Inc. (CCI) has helped over 4,000 laundromats modernize payment options, manage transaction costs, and maximize profit potential—so owners can work on their business instead of in it.