Shopify surcharge app guide

A practical guide to surcharging on Shopify: what it is, how it differs from convenience fees, legal considerations, and implementation patterns.

What is a credit card surcharge?

A surcharge is an additional amount applied when a customer chooses to pay with a credit card, intended to offset processing costs. It’s tied to the payment method, not the product price.

Surcharge vs convenience fee

A surcharge is card-specific. Convenience fees are often tied to a specific “convenience” channel or method. The difference impacts disclosure and sometimes legality.

Common Shopify implementation patterns

  • Line-item fee: add a fee product/line item in cart/checkout flows.
  • Clear messaging: disclose the fee and how to avoid it (ACH).
  • Steering: pair surcharging with an ACH option for best results.