This CS-Cart add-on provides integration with Avalara's tax calculation service Avatax to simplify your complex tax calculation scenarios. It uses their latest APIs for best performance, and supports both an Avatax sandbox environment (for testing) as well as live environment (for production).
This add-on supports:
- Tax calculations on checkout
- Tax calculations for returns via CS-Cart's RMA functionality.
- Custom tax codes set on products / categories / shipping
- Custom tax exempt code for users
Requires an Avalara account (production or sandbox).
- Store Builder
- Store Builder Ultimate
- Multi-Vendor
- Multi-Vendor Ultimate
- 4.20.1
- 4.19.1.SP2
- 4.19.1.SP1
- 4.19.1
- 4.18.4
- 4.18.3
- 4.18.2.SP1
- 4.18.2.
- 4.18.1.SP1
- 4.18.1
- 4.17.2.SP3
- 4.17.2.SP2
- 4.17.2.SP1
- 4.17.2
- 4.17.1
- 4.16.2
- 4.16.1
- 4.15.2
- 4.15.1.SP4
- 4.15.1.SP3
- 4.15.1.SP2
- 4.15.1.SP1
- 4.15.1
- 4.14.3.SP1
- 4.14.3
- 4.14.2.SP1
- 4.14.2
A small development team writing the best code to power your digital experiences.
1.8.2 Апрель 2026
- [fixed] Prevent warning/error when changing from 'N' (incomplete) to Avatax state 'uncommitted'
1.8.2 Апрель 2026
[added] Support for tax sub-type
[fixed] Prevent warning/error when changing from 'N' (incomplete) to Avatax state 'uncommitted'
1.8.1 Апрель 2026
- Added support for tax sub-type
1.8.0 Апрель 2026
Added ability to override tax code for digital downloads
Added tax code field to promotions
Added notification when package source address incomplete
Fixed destination address bug
1.8.0 Апрель 2026
- Fixed up address validation trigger
- Fixed support for tax settings per profile (if multiple profiles / shipping addresses)
- Added ability to override tax code for digital downloads
- Added tax code field to promotions
- Added notification when package source address incomplete
- Fixed destination address bug
1.7.1 Апрель 2026
Fixed up address validation trigger
Fixed support for tax settings per profile (if multiple profiles / shipping addresses)
1.7.0 Апрель 2026
Tidied settings
Added tax code button
Validated correct submission of product code / UPC code
Corrected address validation
Tidied logging
Added advanced (request) logging
1.6.7 Февраль 2026
* Fixed bug causing editing shipping / gift certificate statuses to crash
* Improved warning message when changing to Avatax status "uncommitted" from unknown status
1.6.7 Февраль 2026
* Fixed logic in RMA order re-calculation when tax was previously not removed
* Fixed bug causing editing shipping / gift certificate statuses to crash
* Improved warning message when changing to Avatax status "uncommitted" from unknown status
1.6.6 Февраль 2026
- Fixed logic in RMA order re-calculation when tax was previously not removed
1.6.6 Февраль 2026
* Fixed logic in RMA order re-calculation when tax was previously not removed
* Fixed bug introduced with new gift certificate logic
1.6.5 Февраль 2026
Fixed bug introduced with new gift certificate logic
1.6.5 Февраль 2026
- Improved gift certificate support
- Fixed RMA when not using product_code or no status is known
1.6.4 Февраль 2026
Improved gift certificate support
Fixed RMA when a product is not using product code, or no RMA status is known
1.6.3 Февраль 2026
- Added option to only allow profile tax data to be edited by admins
1.6.2 Январь 2026
- Added support for tax code in multiple levels of category hierarchy
1.6.6 Февраль 2026
Fixed bug when no product code or UPC set and products share name prefix
Tidied logic when using UPC
Added support for tax code in multiple levels of category hierarchy
Added option to only allow profile tax data to be edited by admins
Improved gift certificate support
Fixed RMA when not using product_code or no status is known
Fixed bug introduced with new gift certificate logic
Fixed logic in RMA order re-calculation when tax was previously not removed
1.6.1 Декабрь 2025
- Fixed bug when no product code or UPC set and products share name prefix
- Tidied logic when using UPC
1.6.0 Декабрь 2025
Fixed tax rate % bug when multiple items are in cart
Removed previously-deprecated option to group taxes into single line item
1.5.3 Декабрь 2025
- Fixed order-level discount bug
- Added support for "unit price" tax calculation mode
1.5.2 Декабрь 2025
- Added 'chosen_shippings' array key check
1.5.1 Декабрь 2025
Added support for store pickup (uses store location as both 'from' and 'to' addresses)
Updated to latest Avatax PHP SDK
Better handling of Avatax error structure when handling/showing errors
1.4.3 Ноябрь 2024
Fixed order status to Avatax status typo "Comitted" -> "Committed"
1.4.0 Октябрь 2024
- Setting "Group taxes into single line item" is now deprecated - it is now recommended to handle this on the frontend (.tpl files). Sample code is available on request.
- New setting "Hide $0 taxes" added. This will mean only taxes from Avatax with a non-zero amount will be shown/saved in CS-Cart.
- Adding/editing orders from the CS-Cart admin interface is now supported
1.3.0 Октябрь 2024
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