Max 401k Contribution 2025 And Catch Up. Those 50 and older can contribute an additional $7,500.  — contribution limits for a roth 401(k) are the same as for a traditional 401(k).

The contribution limit for simple 401 (k)s is $16,000 (up to $19,500 if you’re 50 or older).  — the 2025 contribution limit for 401(k) plans is $23,000, up from $22,500 in 2023.