# Tax detail storage

Source: https://developer.avalara.com/products/crossborder/integration-guides/avatax-for-cdit/mys3721688487379/

Guide: AvaTax Cross-Border (Customs Duty and Import Tax)

# Tax detail storage

Understand how AvaTax stores and separates tax details for cross-border transactions.

**Element type: Required**

**Endpoints used:** N/A

When running cross-border transaction in AvaTax, AvaTax returns separate totals for each tax type and tax sub type rather than only a single tax total. Your integration must also separate these totals for each type. For example, keep duty tax types separate from import tax types. Don’t set up your integration to add up all the tax and provide only a single total value. Refer to the [Cart appear requirements overview](/avatax-for-cdit/pms0794187283793/ "Understand the summary and detail appear options required for cart UI design.") topic for an idea of what the response and the UI should look like.