If your 1099-R has an amount in box 3 then enter it, otherwise leave it blank.
Box 3 is rarely used except for charitable gift annuities or participants born before January 2, 1936 (or their beneficiaries). The plan administrator would figure it.
**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.**
