My Vanguard brokerage provides information on income from US Govt. Obligations. I provided this on the interview for my 1099 and it subtracted it from my MD state return. Seams straight forward enough, but Maryland Administrative Release #13 (AR13) discusses taxation of US Govt. Obligations. and provides a list of items that may look like they shouldn't be taxed in MD, but they are. For example, Freddie Mac, Fannie Mae and Ginnie Mae are not US Govt. Obligations. The Vanguard statement specifically excludes GNMA, but I'm left wondering if the % of income that Vanguard identifies as coming from US Govt. Obligations meets the requirements of Maryland's AR13?
