"Despite the intricacies of reporting Roth conversions from Traditional IRAs with pre- and post-tax funding, converting Traditional IRA accounts can make sense ... Since IRA-to-plan rollovers are restricted to pre-tax dollars, such rollovers can essentially serve to reduce the pre-tax balance of a Traditional IRA, maximizing the after-tax balance available for the Roth conversion. Importantly, rolling funds back into an IRA from an employer plan, after completing a Roth conversion, should not be done until after the calendar year in which the Roth conversion was carried out, as doing so would result in the basis of the rollover to be included in the converted amount."