Maximum 401k Contribution 2025 With Catch Up. Starting in 2025, the secure 2.0 act allows eligible participants who are ages. The 401(k) contribution limit for 2025 is $23,500, up from $23,000 in 2024.

The 401k contribution limits for the year 2025 are expected to see many. In particular, participants can now elect to defer up to $23,500 to 401(k), 403(b), and 457(b).