maximum contribution irs.gov/retirement-plans/roth-comparison-chart IRS website Learn more Roth 401(k) Roth 401(k) comparison chart https://www.irs.gov/retirement-plans/roth-comparison-chart you can contribute up to $18,000/$24,000 to a Roth 401(k) higher contribution limits Roth 401(k) According to the IRS IRS Comparison Chart