Retirement tax questions

@dmertz - To me that still does not add up.  I thought the mandatory 20% withholding was on the entire box 1 amount.  If that was $180K then 20% would have been $36K.   $20 K withholding is consistent with $100K distribution with $21K as the RMD as the poster said and the remainder going to the Roth so I still do not understand where the other $80K came from and if it is on the 1099-R form the 401(k) plan or something else.

**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.**