Roth 401(k) vs. Traditional 401(k) This calculator compares employee contributions to a Roth 401(k) and a traditional 401(k). You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content What To Do When Your Income Reaches 7 Figures Preserve your high net worth with these foundational tips. What's My Potential Estate Tax? This calculator helps estimate your federal estate tax liability. When Special Care Is Needed: The Special Needs Trust A special needs trust helps care for a special needs child when you’re gone.