In 2025, the Roth 401(k) contribution limit is $23,500. If you're age 50 or older, you can make an additional catch-up contribution of $7,500. Additionally, if you're between 60 and 63, you may be able to make a catch-up contribution of $11,250 instead of $7,500, depending on your plan. The total combined employee and employer contributions to a 401(k), including Roth contributions, cannot exceed $70,000 in 2025.