Hi yes below are some of the threads
There was an interesting suggestion recently in one of these (following link with example) to use the "US Gov Obligations" adjustment on a 1099-DIV to book the AMD to your state subtraction - not putting it in Box 1 as that would duplicate the 1099-B transfer that can't be turned off, but just adding to the US Gov Obligations amount...
https://ttlc.intuit.com/community/taxes/discussion/re-accrued-market-discount-on-treasury-bonds/01/3...
From some quick testing it seems TT doesn't enforce this amount needs to be less than Box 1, which is probably a flaw in TT, and whatever you put there should hit your state subtraction. If you don't want to hack an existing 1099-DIV and want to be more transparent you could also try entering a 1099-DIV called "AMD STATE ADJUSTMENT" or something like that, with $0 in Box 1a and the AMD as the US Gov amount (which would appear in your Fed return Schedule B, but with $0 impact on Fed income).
Not a CPA/expert so I'm not endorsing or vouching for any side effects, just passing on for others still stuck on this issue or unable to adjust their state return. I already filed with miscellaneous adjustment on my state return so I have not seen it work end to end thru filing.
Other threads (first is the original one from 2023, others more recent)
https://ttlc.intuit.com/community/taxes/discussion/accrued-market-discount-on-treasury-bonds-state-t...
https://ttlc.intuit.com/community/taxes/discussion/re-i-bought-trsy-notes-at-a-discount-my-broker-s-...
https://ttlc.intuit.com/community/taxes/discussion/re-accrued-market-discount-on-new-york-tax/01/357...
https://ttlc.intuit.com/community/taxes/discussion/accrued-market-discount-on-treasury-bonds/00/3156...
https://ttlc.intuit.com/community/taxes/discussion/re-accrued-market-discount-on-treasury-bond-ny-st...
https://ttlc.intuit.com/community/state-taxes/discussion/re-bond-interest-not-taken-off-illinois-tax...
