Overview
As a Square seller, you can enable this feature in the Payment Service step of the setup wizard to pass the Square payment surcharge to customers on Xero invoices paid via Square.
Setup
-
Switch ON the Payment Surcharge toggle.
-
Set the Payment Surcharge percentage*.
-
Review/Apply the relevant Account, Tax and Fees mapping
Xero invoice
After activation, Xero invoices will be updated to include the payment surcharge after customers click the “Pay Now” button and proceed with their card payment through the Square Checkout.
For customers who are choosing to pay via other payment methods (e.g. Bank transfer) no payment surcharge transaction will be present on the Xero invoice.
Square Checkout
The payment surcharge will be added as a line item to the “Order Details” section.
Please note that the tax amount will be calculated to include the on-charge fee, which is taxable.

Paid Invoice
Once the payment is successfully submitted, the Square payment surcharge will be added as a line item to the Xero invoice, which will also be marked as paid as part of the normal payment integration flow.
