Yes, you can contribute to a traditional and/or Roth IRA even if you participate in an employer-sponsored retirement plan (including a 401K,SEP or SIMPLE IRA plan). See the discussion of IRA Contribution Limits. If you or your spouse is covered by an employer-sponsored retirement plan and your income exceeds certain levels, you may not be able to deduct your entire contribution. See the discussion of IRA deduction limits.
https://ttlc.intuit.com/replies/4795138
