@ruchir-vaishnav That's a great question. Because Roth plans are deducted after tax, the employee does not pay the taxes on the amount drawn at retirement. If you are signed up for Intuit payroll and have employees setup to contribute to a Roth 401(k) plan, we take care of properly reporting wages and contributions on W-2's. Here's a list of supported pay types and deductions : Supported pay types and deductions explained
Let me know if you have additional questions.