Support Avatax with Ecommerce

Problem Statement

Pelcro currently does not support AvaTax tax calculation for e-commerce transactions. E-commerce SKUs may require different AvaTax tax codes, and taxes must also be handled correctly when orders are refunded or items are returned.

User Story

As a merchant using AvaTax, I want Pelcro to calculate taxes for e-commerce purchases based on each SKU’s AvaTax tax code so that the correct taxes are applied to purchases, refunds, and returns.

Definition of Done

• Support AvaTax tax calculation for e-commerce transactions.

• Allow an AvaTax tax code to be configured per SKU.

• Send the applicable SKU tax code to AvaTax when calculating tax.

• Support different tax codes for different SKUs within the same order.

• Calculate and display the applicable tax correctly during e-commerce checkout.

• Ensure AvaTax-calculated taxes are reflected correctly on the resulting order/invoice.

• Support full and partial refunds with the corresponding tax adjustment.

• Support item returns and correctly reverse/adjust the associated tax.

• Refund and return tax behavior should be consistent with Pelcro's existing tax behavior.

• Existing e-commerce flows that do not use AvaTax remain unaffected.