New Member

Do I need to show an after-tax 401k (not Roth) contribution on my taxes (my firm allows us to contribute up to $10K to an after-tax 401k beyond the $18K Roth 401k limit)?

I'm asking specifically if I need to denote anywhere that I contributed an additional amount to an after-tax 401k account, not about the contribution I made to my Roth 401k.  Thanks!