A relative recently pointed out that the portion of mutual fund dividend income from U.S. obligations is exempt from state tax. I've never paid attention to this in the past (and probably left a few bucks on the table), but with the recent rise in interest rates this now matters. It's interesting that importing my brokerage 1099-DIV into TurboTax does not automatically populate the "portion of income from U.S. obligations box" in TurboTax's version of the 1099-DIV. I have to manually calculate and enter the value myself from the detailed info provided in the 1099. I'm not aware of any technical reason why my brokerage and Intuit couldn't get together to automatically populate this field; it just doesn't happen. I'll be saving quite a bit of money on this year's state taxes by doing this additional work. This is a PSA for folks who might be in the same boat.