Are you manually filing a 8606 and a tax return? If you are using TurboTax then when you enter your1099-R the interview will ask about the basis in the IRA and the 8606 will be automatic.
If doing manually then you are correct, line 8 should be the amount actually converted which will be the 1099-R box 1 amount. (Don't forget to enter the total value of ALL Traditional, SEP and SIMPLE IRA accounts that existed on the last day of the year of the distribution on line 6 or the 8606.)
**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.**
