Change Sale Tax is an Odoo module that enables users to easily modify or replace sales taxes directly on Sales Orders without changing the default tax configuration on products or customers. It provides flexibility to handle special tax scenarios, region-specific tax requirements, or customer-specific agreements at the transaction level, ensuring accurate tax calculation and better compliance. By allowing quick tax adjustments within the sales workflow, the module reduces manual corrections, saves time, and helps businesses manage complex or frequently changing tax structures more efficiently.