Bodegas Put on Notice as Visa Fights Back on Card Surcharges

The world’s largest payment network is making changes to how it deals with merchants who want to charge customers extra when paying with a credit card.

In recent months, Visa Inc. lowered the maximum amount retailers can charge consumers using the firm’s cards. The company has also started sending in-person auditors to ensure stores are complying with its rules when levying such surcharges.

Visa’s moves come as a growing number of small businesses say they’re feeling pinched by the fees they pay to banks to accept electronic payments. They’ve increasingly turned to card surcharges as a way to cover those ...