What do you mean? You pay tax on a distribution. An employers retirement plan to a IRA rollover is not taxable unless converted to Roth IRA.
Why was anything taxable in 2018? What code was in the 2018 1099-R box 7?
What type of IRA did you roll it into -Traditional or Roth?
**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.**