The Tax software does have a follow-up page right after the entry of the main 1099-DIV data in the Federal section, where you indicate how much of box 1a was due to US Govt bonds.
You calculate that from the %% that Vanguard provides, but you calculate it directly from box 1a ONLY if that Vanguard fund is the only source of $$ in box 1a. If other funds or stocks are including $$ in box 1a, then you have to get the $$ just from VMFXX from one of the Vanguard supplemental data sheets to calculate the appropriate $$ amount. Then that amount should automatically be subtracted in the GA tax forms. (at least it does in the NC tax forms every year).
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
