May 2026 release information
Learn about the latest deadline updates, due date logic changes, and lookup list updates for ONESOURCE Calendar Classic.
Deadline information
The following deadlines may be different for the current tax year due to one-off extensions granted by the tax authority. These deadlines will not be updated in Calendar Classic at this time.
Jurisdiction code | Potential taxpayers or event template name | Calendar deadline | Special extension deadline | Information |
|---|---|---|---|---|
USA | Individuals and businesses in Tennessee affected by Winter Storm Fern | January 22, 2026 – June 7, 2026 | June 8, 2026 | |
USA | Individuals and businesses in Mississippi affected by the severe winter storm | January 23, 2026 – June 7, 2026 | June 8, 2026 | |
USA | Individuals and businesses in the State of Hawaii affected by flooding and mudslides due to severe storms | March 10, 2026 – July 7, 2026 | July 8, 2026 |
Current content priorities
The following Tax Law Updates are current content priorities.
Jurisdiction | Update |
|---|---|
France | Gradual phasing out of the Company Value Added Contribution (CVAE) until its final abolition by 2030. |
New Jersey | Proposed a new simplified standardized return to replace the CBT-100 and CBT-100U. |