In 2013, Visa, MasterCard, and the card brands changed their policy to allow for credit card surcharging at the merchant level. However, be aware specific rules vary by state. Check with the card brands to determine if your state prohibits surcharging. Many law firms simply build the additional cost into their fees as a standard business expense. This is generally recommended as the proper and more professional way to handle the business expense of processing payments.

Visa Surcharge Guide

Card Brand Updates on Surcharging