B2B Payment Surcharge Automation for Shopify Draft Orders

90% Confidence Medium Market Hard Difficulty $5k-15k MRR Updated May 17, 2026

The Opportunity

Automatically apply or remove payment-method surcharges on Shopify B2B draft orders based on how the customer chooses to pay. This removes manual edits and helps wholesalers preserve margin on card payments while keeping ACH checkout fee-free.

"Merchants running B2B draft orders manually add a credit card processing fee as a custom line item and then remove it when the customer pays by ACH, which is time-consuming and error-prone."

Market Validation

1
Merchants Asking
93/100
Quality Score
1
Unique Merchants

Detailed Analysis

Proposed Solution

A Shopify app that detects payment method selection during invoice checkout or payment capture and automatically adds a configurable surcharge only for card payments, with rules for subtotal/shipping percentage or flat fee and exclusions for ACH.

Target Audience

Shopify B2B merchants, wholesale stores, and merchants using draft orders/invoices with mixed payment methods

Competitive Landscape

FeeBee, Surcharges-related Shopify apps, wholesale/invoice apps with fee rules

Implementation Notes

Need to integrate with draft order workflows, invoice/payment events, and possibly checkout/payment method detection; support configurable surcharge rules by payment type, customer tags, and order attributes; must handle Shopify limitations around payment surcharges cleanly, ensure tax calculations are correct, and avoid double-charging or fee application on ACH/manual payments.

Evidence from Merchants

Real quotes from Shopify community forums

"Right now we manually add a 3% credit card processing fee as a custom line item."

- AngarTheScreamer1

"Ideally, Shopify would automatically add the 3% fee only if the customer chooses credit card when completing the order."

- AngarTheScreamer1

"Shopify support says there’s no native way to do this and suggested third-party apps, as usual."

- AngarTheScreamer1

Key Pain Points

Manual addition and removal of credit card processing fees for draft orders

high

Mentioned by 1 merchants

Impact: Time-consuming manual process could lead to errors and customer dissatisfaction.

Market Metrics

$59-99/mo
Suggested Pricing
~500 stores
Addressable Market
4-8 months
Dev Timeline
3-6 months
Time to Market

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