if you're referring to Accrued Market Discount on discounted Treasury Notes, these get adjusted on Form 8949 and reflected as ordinary income on Schedule B, but there is no automatic state subtraction for this income like 1099-INT Box 3 or 1099-DIV Box 1a US Gov Obligations. This has been a long running topic through the rate hike cycle, lots of old threads on this, no doubt this will bubble up here again.
It depends whether your state regards these as state tax exempt, which varies in the language and interpretation of the state tax code, NC courts for example explicitly ruled it's taxable. If you've determined your state exempts this income then there is usually the ability in the state tax return to add a manual subtraction to income. But some states have different reporting requirements and this sort of adjustment precludes e-file for NY for example, if I recall correctly.
