How do I know if the interest from my Treasury Bills was excluded from Federal but added back for VA state?

[VolvoGirl]

No it's the other way around.  It's taxable on federal but excluded on state.

When you enter the 1099-INT you need to enter the interest in Box 3 then it will be automatically excluded from the state return.

To get to box 3. Under the Received from box, you need to check the little box on the left for
….My form has info in more than just box 1 (this is uncommon).