Surcharging is a service offered by Tabs3Pay that allows firms to take advantage of the convenience of credit card processing while minimizing the expense of processing fees. While processing fees are normally paid by the firm, with surcharging, credit card fees are paid by the cardholder instead. Only credit card transactions (Visa, MasterCard, American Express, Discover, etc.) are subject to surcharging. Processing fees for debit card and ACH (eCheck) transactions continue to be paid by the firm.