The New Category window is showing its extreme age. It cannot be resized. The tiny "Subcategory of" dropdown list is almost unusable. Indenting is insufficient and the limited size of the dropdown list interferes with navigation and search. The text boxes are not wide enough to show multiple category levels. Tax reporting should be on the same line all other essential fields in the same order as the "Category List" window. The iron-age tax form reference should be replaced with a more user-friendly form list and a tax form lookup.
Some thought is also needed to add the ability to quickly and efficiently reorganize categories and category structure. The "Category Edit" window shares many of the "New Category" window faults.
Suggest consolidating the separate windows into a pane at the top or just above the data in the "Category List" window. Excel does this, making it possible to edit a cell by modifying the data in a text box at the top of the window. Please to not place an edit field at the bottom of the window where it might be inadvertently accessed.