Yes, you can clear boxes 16-18. The important box is #16. If there are amounts in there, that means the issuer withheld amounts which are credits on your tax return. You want all of your credits, but if there is no amount in Box 16, no state taxes were withheld so no credits are due. That doesn't mean you don't owe state tax, it just means nothing was withheld. You will still owe the tax when you complete your state return (UT), but clearing out those boxes will allow you to e-file. If there were an amount in Box 16, you would need the box 17 information to get credit for the tax ''paid''.
