Fiscal positions can now map a domestic tax to itself while adding related withholding taxes, matching how some countries such as Spain handle local tax rules. This removes a user interface restriction so accounting configurations can be set up consistently with existing data files.

countries like spain use the fiscal position feature to add a withholding tax to the product's domestic tax. in order to do that, the domestic tax needs to replace itself (as was done in the old tax mapping) The UI domain was restricting this (even though the data files do that).

The tax return dashboard now presents return deadlines more clearly and adjusts the Tax Return button styling when there are no pending returns. This makes it easier for users to understand what needs attention and reduces visual emphasis on actions that are not currently needed.

improves the visual of the kanban card of the return journal by specifying clearer date deadlines for returns, and making the "Tax Return" button secondary if not more returns to do at the moment.

task-4792156