My employer set up a SEP but has not consistently contributed to it; 2017 additions were zero. TurboTax asks if I am covered by a SEP IRA and I check "Yes". No deduction is then allowed for a contribution to a traditional IRA. Do I check the "No" box instead?
Check "NO" You’re only covered by an employer retirement plan for a tax year if your employer (or your spouse’s employer) has a:
IRA-based plan (SEP, SARSEP or SIMPLE IRA plan) and you had an amount contributed to your IRA for the plan year that ends with or within the tax year