In January we are starting a after-tax Roth 401k. We already have a pre-tax 401k with a company match. So on the deduction tab on the BN15 I added the after tax deduction. In testing a employee that could reach the limit in a run. I found that it took the pre-tax the took as much of the after tax(Roth) as it could to the max. I am told that they would like it to prorate between the two. Like a 50-50 split the last payroll. Is anyone doing this. And if so how.