Why can't I add income categories to my budget?

You must designate some categories as income-based before you will be able to add any categories to the income section of your budget. Select "Categories" in the "Manage" section of the source list and select a category you want to use to track income. At the bottom of the screen, change the category's type to "Income," then save your changes. Repeat this process for each of your income categories. When you return to your budget setup, those categories will be available for use in the income section.