I had a 2017 traditional IRA distribution of $8,000. However, TurboTax is only showing $1,500 on the taxable amount on form 1040 line 15b. I don't understand why the full amount of $8K is not the taxable amount (especially since the "Federal tax withheld" shows $1,350). My 1099R shows "Taxable amount not determined" and it also shows a distribution code of 7 (normal) and the IRA/SEP Simple box is checked. The TurboTax form titled "Distributions from Pensions, IRAs, etc. does not show a calculation for arriving at the $1,500 taxable amount. Can anyone explain how the $1,500 was determined? Thank you.
