Summary:
I had a problem where my Income categories would not show up in my budget planning. I traced the problem to assigning ALL of my income items to Custom Categories Groups I created. The fix/workaround is to leave AT LEAST ONE item not assigned to a Custom Category Group.
Details:
Windows 11 Home, R60.15 Build 27.1.60.15
Quicken has a default Category Group, "Personal Income". You can create your own custom Category Groups and assign Categories to your Custom Group. ("Tools" menu, "Category List", "Options" button, select "Assign Category Groups"). If you create and assign all of your "Personal Income" default group items to custom your categories , your custom categories will show up in the Planning/Budget tool "Manage Budget Categories", and you can select them, but they will not appear on the budget planning sheet. Note that the default "Personal Income" category does not appear in "Manage Budget Categories".
If you leave one "Personal Income" group item unassigned, "Personal Income" shows up under "Manage Budget Categories", and your custom categories will work. You do not have to select anything from "Personal Income" for this to work. It can be a hidden category. If you deselect the show hidden items radio box, the "Personal Income" group disappears from "Manage Budget Categories" if it only contains hidden categories.
I presume that this issue will occur with all of the Quicken default categories (e.g. "Personal Expense") but I did not test that.