1099-R Traditional 401(k) rollover to Traditional IRA with post-tax money rolled over to Roth IRA

[jeremykay]

I have a Traditional 401(k) from a former employer that I rolled over. A portion of this money was a post-tax contribution (in excess of the $18,500 pre-tax cap). The pre-tax portion was rolled over into a Traditional IRA and the post-tax portion to a Roth IRA. TurboTax asks me if the money was rolled over into a Roth IRA, but has no option to specify how much. If I click yes, it's trying to make me pay taxes on the pre-tax amount even though that portion was rolled over into a Traditional IRA. Can any one help me figure out how to enter this?

[dmertz]

You must split the Form 1099-R into two, one for the portion rolled over to the traditional IRA and the other for the portion rolled over to the Roth IRA.  The box 5 entry must be on the one that is for the rollover to the Roth IRA.