You were covered by a retirement plan at work for the entire year if covered for one day during the 2016 tax year. If box 13 is checked on your W-2 you must check in. The IRS gets a copy. The 401(k) reporting in box 12 on yiur W-2 also tells TurboTax (and the IRS) that you were covered and cannot deduct the IRA.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
