Tax Missing from 3rd Party Orders In Shopify UI

[CartMarketing]

Hello,

• My storefront has an integration with other websites, so customers are able to buy my products on third party websites.
• Those third party orders still appear in my Shopify, and all order numbers have specific strings at the start to help me identify them.
• I'm pulling orders data from the Shopify API and I'm noticing a discrepancy between the API and the Shopify UI with respect to tax for orders that took place on the third party websites. For example, one order shows the same total price in the API and UI: $255.00.
• However, in the API orders table I'm seeing a tax amount of $22.64 which is not present anywhere in the Shopify UI.

What adjustments do I need to make in order to see the same information in the Shopify UI as I'm seeing in the API with respect to orders from 3rd party websites?