Releases for 2024 are listed here:

March 22nd

Added Tax Jurisdiction fields for State, County and City to US transactions.
The Create a refund request has been enhanced with the following fields for US refunds: Tax Rate, Refund Reason, Refund Timestamp, Amount (without tax), Tax Components. See US and Canadian Refunds (Tax Components Schema) and US Sales Overview.
The Get refund details request has been enhanced with the following fields Custom ID, Amount (without tax) and Tax Components.
Both numbers and letters can now be specified as part of a Canadian postal code.
Added Sales and Use Tax field to US invoices and credit notes.

Documentation Updates

A new Refunds topic has been added.
A new Bulk Refunds request topic has also been added.
A new US and Canadian Refunds (Tax Components Schema) field reference topic has been added.

January 22nd

Support added for multiple Tax IDs for Canada for the Checkout Form.
Added ability to validate GST and HST Tax IDs in Canada instead of the PST.
Invoice footnotes are limited to 256 characters.
Support has been added for Tax ID validation for Egypt.
Support for validation of Tanzanian Tax IDs has been added.
Advantage Plus only. Addressed issue with Filings filter in Live mode.
Addressed some errors in Stripe webhook handling.
Advantage Plus only. Addressed an issue where the Payment Reference was not displayed in the Filing Summary.
Addressed timeout errors that can occur on the Transactions tab.
Consultation ID is added to Vertex Validator.
Users can now download the Detailed Settlement report from the notification email.
A new B2B report is added for India. See B2B Reports.
Addressed issue where in rare circumstances some transactions to be duplicated in the Detailed Settlement report.
Added feature to allow for the caching of invalid tax IDs for a country.
Advantage Plus only. Invoice formatting issues are addressed for some countries.
Support added for validating multiple Tax IDs in the Checkout Form.
Addressed issue where some foreign currency exchange rate sources had not been updated.
Addressed some errors in the JavaScript used with the Checkout Form.
Addressed issue where some rates from the Oman source were not retrieved correctly.
Addressed issue where Date Range selection values could be partially hidden behind a UI table in certain circumstances.
Addressed issue that caused parsing error for some foreign currency rates for the Singaporean source.
Negative amounts can now be displayed for regions, such as Canada, that can have multiple authorities.
Addressed issue where some unnecessary calls were sent to Stripe when Checkout Form fields not related to Stripe were updated. These no longer occur.
Added database validation for Swiss Tax IDs.

Previous Years

Release notes are also available for the following years: