Retirement tax questions

Thanks for your reply. 

 

When I enter the number under Individual 401 (k) my tax owed goes down, meaning the system is taking a deduction, I think.  However, contributions to a Roth are not deductible as I understand it.  When I enter the number under Roth 401(k) the taw owed stays the same (no deduction taken).  I think the latter is correct.

 

@dmertz can you please clarify?  Thanks