Can you answer this aspect of the question: "where do I enter an after-tax 2019 401(k) catch-up contribution in Turbo-tax? Since most employee and employer 401(k) contributions are supplied to Turbo-tax via the W-2, Turbo-tax does not appear to have many (any?) fields expressly identifying deductions for a 401(k), let alone a catch-up contribution. Many thanks.
